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<strong>Gracial</strong> Product Monograph<br />

Product Monograph<br />

o<br />

For further information, please contact: N.V. Organon, PO Box 20, 5340 BH Oss, The Netherlands, www.<strong>org</strong>anon.com


40 µg ethinylestradiol/25 µg desogestrel (7x)<br />

30 µg ethinylestradiol/125 µg desogestrel (15x)<br />

Product Monograph


© 2000 N.V. Organon<br />

All rights reserved, including that of translation into other languages. No part of this publication may be<br />

reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying,<br />

recording or any information storage and retrieval system, without permission in writing from N.V. Organon.<br />

ISBN 90 687 80 239


Contents<br />

Page<br />

1. INTRODUCTION 1<br />

1.1 Rationale for <strong>Gracial</strong> 4<br />

2. PHARMACOKINETICS 6<br />

2.1 Desogestrel 6<br />

Absorption 6<br />

Metabolism 6<br />

Distribution 7<br />

Elimination 7<br />

2.2 Ethinylestradiol 8<br />

3. PHARMACODYNAMICS 10<br />

3.1 Receptor affinity 10<br />

3.2 Selectivity index 11<br />

3.3 Effects on the pituitary ovarian axis 12<br />

3.4 Effects on cervical mucus 15<br />

4. CONTRACEPTIVE EFFICACY 16<br />

5. ACCEPTABILITY 17<br />

5.1 Cycle control 17<br />

Irregular bleeding 18<br />

Withdrawal bleeding 18<br />

5.2 Side effects 20<br />

5.3 Body weight 21<br />

5.4 Continuation rate 21<br />

6. GRACIAL AND MILD TO<br />

MODERATE ACNE 22<br />

6.1 Effect on SHBG and testosterone 22<br />

6.2 Clinical effects 23<br />

7. SAFETY ASPECTS 27<br />

7.1 Venous thromboembolism 28<br />

Hemostasis 28<br />

Epidemiological data 29<br />

7.2 Arterial disease 33<br />

Lipid metabolism 33<br />

Carbohydrate metabolism 35<br />

Blood pressure 35<br />

Epidemiological data 35<br />

7.3 Gynecological cancer 38<br />

Breast cancer 39<br />

Cervical, ovarian and endometrial cancer 40


Contents<br />

Page<br />

8. SUMMARY 42<br />

9. REFERENCES 43<br />

10. SUMMARY OF PRODUCT<br />

CHARACTERISTICS 48


1. Introduction<br />

•<strong>Gracial</strong> is the first combiphasic oral contraceptive, with<br />

an estrogen-dominant phase of seven days, followed by<br />

a progestogen-dominant phase of 15 days<br />

• The control of irregular bleeding that this regimen<br />

offers makes <strong>Gracial</strong> ideal for women with<br />

unacceptable irregular bleeding patterns<br />

•<strong>Gracial</strong> has also been shown to have beneficial effects<br />

on mild to moderate acne<br />

Benefits of<br />

the Pill<br />

The introduction of combined oral contraceptives (OCs) in the<br />

early sixties made effective and reversible contraception for<br />

women available for the first time.<br />

The obvious benefits of the Pill – prevention of unwanted<br />

pregnancy and consequent reduction in the need for abortion,<br />

the possibility of family planning and the realization of sexual<br />

liberation – were quickly recognized. Pill users also<br />

appreciated the regulation of the menstrual cycle, the<br />

decrease in premenstrual complaints and the possibility of<br />

timing their menstrual periods.<br />

After some initial hesitation, use of the Pill increased rapidly.<br />

By 1999, some 90 million women were using an oral<br />

contraceptive, and their number is still growing.<br />

Although new forms of contraception may be developed in the<br />

near future, the Pill is likely to maintain its important position<br />

as a contraceptive, and more and more women are likely to<br />

become long-term users. Meanwhile, the development of<br />

newer OC formulations, with less systemic effects, has made<br />

the Pill acceptable for a wider spectrum of women.<br />

1


Introduction<br />

Since all the current low-dose OCs containing new-generation<br />

progestogens are safe and reliable, more attention can be<br />

given to the development of preparations that are ‘fine-tuned’<br />

to fit the individual needs of women.<br />

Switchers<br />

Reasons for<br />

switching OCs<br />

Most OC users who start with a low-dose preparation are<br />

satisfied with this. However, for certain subgroups (e.g. women<br />

with unacceptable irregular bleeding or subjective side<br />

effects), the estrogen/progestogen doses of their firstprescribed<br />

OC may not be in balance. These women may<br />

benefit from switching to an OC preparation which has been<br />

especially developed to meet their specific needs.<br />

A study from the Netherlands showed that in 1993, 13.6% of<br />

all OC users switched from one brand to another, mainly for<br />

reasons of acceptability (Figure 1) (Oddens et al 1994).<br />

stop use 12.2%<br />

starters 9.4%<br />

switchers 13.6%<br />

Major Reasons:<br />

• cycle control<br />

• subjective side effects<br />

• skin problems<br />

• change to lighter pill<br />

same brands 64.8%<br />

Fig. 1: OC use and major reasons for brand switching<br />

in the Netherlands in 1993<br />

2


Introduction<br />

<strong>Gracial</strong><br />

A recent study in 2,278 women showed specific reasons for<br />

switching from their previous OC to <strong>Gracial</strong>, as shown in the<br />

figure below (Vree 2000).<br />

Incidence (%)<br />

50<br />

40<br />

30<br />

20<br />

10<br />

0<br />

41.3%<br />

Irregular<br />

bleeding<br />

27.0%<br />

Other<br />

menstrual<br />

disorders<br />

9.8%<br />

Migraine/ Decreased<br />

headache libido<br />

3.2% 2.8% 2.7%<br />

Increased<br />

body<br />

weight<br />

Main reason for switching to <strong>Gracial</strong><br />

Fig. 2: Reasons for switching from other OCs to<br />

<strong>Gracial</strong><br />

Acne<br />

Vree 2000<br />

<strong>Gracial</strong> is a Pill which is particularly suitable for women who<br />

want to switch to a different OC because of unacceptable<br />

irregular bleeding or subjective side effects. A number of<br />

studies have also shown <strong>Gracial</strong> to have beneficial effects on<br />

mild to moderate acne.<br />

This product monograph discusses the clinical properties<br />

of <strong>Gracial</strong>, an OC preparation with a unique combiphasic<br />

regimen. The preparation contains DSG and EE in a relatively<br />

estrogenic phase during the first seven days of the Pill cycle,<br />

followed by a progestogenic phase of 15 days for the<br />

remainder of the Pill cycle.<br />

3


Introduction<br />

1.1 Rationale for <strong>Gracial</strong> -<br />

a combiphasic pill with 22 tablets<br />

per cycle<br />

Although most women are satisfied with the first low-dose OC<br />

they are prescribed, each year more than 10% of all OC users<br />

switch their Pill mainly because of unacceptable cycle control<br />

and/or subjective side effects (Oddens et al 1994). In order to<br />

continue with OC use, they need a preparation fitting their<br />

individual needs.<br />

Combiphasic<br />

regimen<br />

Step-up/<br />

step-down<br />

From clinical studies with OCs it seems that irregular bleeding<br />

which occurs early in the cycle is due to a relative estrogen<br />

deficiency, whereas mid- and late-cycle irregular bleeding can<br />

be attributed to a lack of progestogen. Consequently an<br />

innovative combiphasic dosage regimen has been developed<br />

by Organon. It consists of two different estrogen and<br />

progestogen phases, and differs considerably from the<br />

standard biphasic Pill. The combiphasic regimen (Figure 3) has<br />

a unique step-up/step-down sequence. This means that the<br />

progestogen dose increases whilst the estrogen dose<br />

decreases in the second phase of the Pill cycle.<br />

EE 40 µg 30 µg<br />

DSG<br />

25 µg<br />

125 µg<br />

Pill-free<br />

interval<br />

7 22 28<br />

days<br />

Fig. 3: Step-up, step-down combiphasic regimen of<br />

<strong>Gracial</strong><br />

4


Introduction<br />

Estrogen<br />

dominance<br />

7 days<br />

Progestogen<br />

dominance<br />

15 days<br />

Excellent cycle<br />

control<br />

<strong>Gracial</strong>, the first combiphasic oral contraceptive, has an<br />

estrogen-dominant phase of seven days (25 µg DSG + 40 µg<br />

EE), which is followed by a progestogen-dominant phase of 15<br />

days (125 µg DSG + 30 µg EE). The relative estrogenic<br />

dominance during the first seven days controls irregular<br />

bleeding in the first part of the cycle. From day 8 onwards, the<br />

shift to progestogen dominance controls irregular bleeding<br />

during the middle and latter part of the cycle. Theoretically,<br />

this makes <strong>Gracial</strong> an ideal OC for women with unacceptable<br />

irregular bleeding. It has been clearly demonstrated that<br />

<strong>Gracial</strong> has exceptionally good cycle control characteristics<br />

(Dieben, Op ten Berg et al 1994).<br />

Table 1: Estrogen/progestogen balance of<br />

DSG-containing OCs<br />

EE dose Desogestrel dose E/P<br />

(µg/cycle) (µg/cycle) balance<br />

Mercilon 420 3150 1:7.5<br />

Marvelon 630 3150 1:5.0<br />

Laurina 665 2100 1:3.2<br />

<strong>Gracial</strong> 730 2050 1:2.8<br />

The new regimen allows a reduction of one third of the total<br />

progestogen dose compared to Mercilon and Marvelon and a<br />

completely different estrogen/progestogen balance compared<br />

to other OCs containing EE and DSG (Newton 1994).<br />

Conclusion<br />

<strong>Gracial</strong> is a unique combiphasic oral contraceptive that is<br />

particularly suitable for women who wish to switch to a<br />

different OC because of unacceptable irregular bleeding or<br />

subjective side effects. <strong>Gracial</strong> has also been shown to have<br />

beneficial effects on androgenic skin disorders such as acne.<br />

5


2. Pharmacokinetics<br />

• After oral administration, desogestrel is rapidly<br />

transformed into its active metabolite, etonogestrel<br />

• Approximately 96–99% of circulating etonogestrel is<br />

bound to plasma proteins, predominantly albumin and<br />

SHBG<br />

• EE undergoes rapid absorption after oral<br />

administration, with peak plasma levels being reached<br />

after approximately 1.5 hours<br />

Etonogestrel<br />

2.1 Desogestrel<br />

Absorption<br />

Desogestrel (DSG) itself is relatively inactive and most of its<br />

pharmacological activity is attributed to its active metabolite<br />

etonogestrel. In humans, oral doses of DSG are rapidly and<br />

almost completely absorbed, mostly from the duodenum.<br />

Following oral administration, DSG is rapidly and adequately<br />

biotransformed into the active progestogen etonogestrel<br />

(Hasenack et al 1986). In vitro studies indicate that<br />

biotransformation occurs in both the liver and the intestinal<br />

mucosa (Madden et al 1989;1990), the bioavailability being<br />

62–81% after multiple dosing (Timmer et al 1990).<br />

Metabolism<br />

The biotransformation of DSG into etonogestrel takes place in<br />

gastrointestinal and hepatic tissues within 30 minutes<br />

following ingestion.<br />

Potential drug<br />

interactions<br />

The main route of DSG metabolism is a cytochrome P450-<br />

catalyzed hydroxylation followed by a dehydrogenation. The<br />

hepatic cytochrome P450 enzyme system involved in the<br />

metabolism of contraceptive steroids may be induced by<br />

rifampicin, griseofulvin and a number of anticonvulsant drugs<br />

(hydantoins, barbiturates, primidone, carbamazepine) (Geurts<br />

et al 1993). Interactions with oxcarbazepine, rifabutin,<br />

troglitazone and felbamate are also suspected. Animal studies<br />

with phenobarbitone have shown that it induces the<br />

metabolism of desogestrel and etonogestrel. Therefore, there<br />

is a theoretical risk that the effectiveness of <strong>Gracial</strong> may be<br />

reduced in women taking the specified enzyme-inducing drugs.<br />

6


Pharmacokinetics<br />

ENG<br />

predominantly<br />

bound to albumin<br />

and SHBG<br />

Half-life ENG<br />

30 hours<br />

Distribution<br />

After absorption and bioactivation, etonogestrel is distributed<br />

throughout the body. Studies have shown that etonogestrel is<br />

about 96–98% bound to proteins, predominantly to albumin<br />

and sex hormone-binding globulin (SHBG). The EE-induced<br />

increase of plasma SHBG after multiple dosing induces a shift<br />

towards more binding of etonogestrel to SHBG relative to<br />

albumin (Hammond et al 1984).<br />

Elimination<br />

Etonogestrel is eliminated from the body, mainly as<br />

conjugated and polyhydroxylated metabolites (Viinikka et al<br />

1980). The elimination half-life of desogestrel is about 30<br />

hours (Archer et al 1994). Desogestrel and its metabolites are<br />

excreted with urine and feces, the ratio being 1.5:1 (Viinikka<br />

et al 1980).<br />

Etonogestrel<br />

(ng/ml)<br />

1.5<br />

1.0<br />

0.5<br />

Day 22<br />

Day 7<br />

2 4 6 8 12 24 h<br />

Fig. 4: Etonogestrel serum concentration on days 7<br />

and 22 of <strong>Gracial</strong> administration<br />

Jung-Hoffmann et al 1992<br />

7


Pharmacokinetics<br />

ENG mainly<br />

bound to<br />

albumin and<br />

SHBG<br />

2.2 Ethinylestradiol (EE)<br />

Following oral administration of <strong>Gracial</strong>, ethinylestradiol (EE) is<br />

absorbed within 1.5 hours (Jung-Hoffman et al 1992) and<br />

then distributed throughout the body. The absolute<br />

bioavailability of EE after multiple dosing of a DSG/EE<br />

combination has been calculated as approximately 59% (Back<br />

et al 1987). Plasma EE is 98.5% protein bound, almost<br />

entirely to albumin (Kuhl 1990).<br />

The metabolism of EE involves cytochrome P450-mediated<br />

hydroxylation, with 2-hydroxy-EE and 2-methoxy-EE as the<br />

major metabolites (Purba et al 1987).<br />

Half-life EE<br />

29 hours<br />

EE is eliminated from the body principally as conjugated<br />

metabolites and the elimination half-life has been calculated<br />

at about 29 hours (Bergink et al 1990). Excretion occurs via<br />

urine and feces at a ratio of 1:1.6 (Speck et al 1976).<br />

EE pg/ml)<br />

100<br />

50<br />

Day 7<br />

2 4 6 8 12 24 h<br />

EE (pg/ml)<br />

100<br />

50<br />

Day 22<br />

2 4 6 8 12 24 h<br />

Fig. 5: Ethinylestradiol serum concentration on days<br />

7 and 22 of <strong>Gracial</strong> administration<br />

Jung-Hoffmann et al 1992<br />

8


Pharmacokinetics<br />

Conclusion<br />

<strong>Gracial</strong> contains the progestogen desogestrel, which is rapidly<br />

absorbed and transformed following oral administration to its<br />

active metabolite, etonogestrel. Etonogestrel is 96–99%<br />

bound to plasma proteins, mainly albumin and SHBG and is<br />

eliminated from the body in urine and feces. Ethinylestradiol is<br />

98.5% bound to plasma proteins, mainly albumin.<br />

9


3. Pharmacodynamics<br />

•Etonogestrel has a high selectivity index<br />

• The 22-day regimen of <strong>Gracial</strong> permits a very low<br />

progestogen dose in the first seven days of the cycle,<br />

without compromising contraceptive reliability<br />

•<strong>Gracial</strong> inhibits follicle development and ovulation<br />

3.1 Receptor affinity<br />

Different progestogens have different hormonal profiles: in<br />

addition to the progestogenic activity required for the<br />

inhibition of ovulation, progestogens may also possess some<br />

degree of androgenic activity. This is neither required nor<br />

desirable in OCs because of adverse effects such as<br />

androgenic skin disorders.<br />

Desogestrel is derived, like levon<strong>org</strong>estrel, gestodene and<br />

n<strong>org</strong>estimate, from 19-nortestosterone. Desogestrel is,<br />

however, differentiated from levon<strong>org</strong>estrel and other<br />

progestogens by a methylene group at position 11, which<br />

interferes with the binding of desogestrel to androgen<br />

receptors.<br />

CH 3<br />

H 2<br />

C<br />

11<br />

12<br />

CH 2<br />

13<br />

17<br />

OH<br />

C<br />

CH<br />

2<br />

1<br />

9<br />

10 8<br />

14<br />

15<br />

16<br />

3 5<br />

4<br />

6<br />

7<br />

Fig. 6: Structure of desogestrel<br />

10


Pharmacodynamics<br />

In vitro receptor-binding studies are useful in predicting the<br />

hormonal characteristics of progestogens. Such studies have<br />

shown that desogestrel has very little affinity for progesterone,<br />

estrogen or androgen receptors (Bergink et al 1981; Breiner et<br />

al 1986; Juchem and Pollow 1990). However, its active<br />

metabolite etonogestrel exhibits:<br />

• significantly stronger affinity for the progesterone receptor<br />

than levon<strong>org</strong>estrel or norethisterone<br />

•very low affinity for the androgen receptor (considerably<br />

lower than levon<strong>org</strong>estrel or gestodene)<br />

• negligible binding to the estrogen receptor (Bergink et al<br />

1981, 1983; Hoppen and Hammann 1987; Juchem and<br />

Pollow 1990; Kloosterboer et al 1988)<br />

3.2 Selectivity index<br />

The hormonal characteristics of a progestogen can be<br />

assessed by its binding affinity for progesterone and androgen<br />

receptors in in vitro receptor-binding studies as well as by in<br />

vivo bioassay techniques in animal models. In addition,<br />

progestogenic activity can also be assessed in women by<br />

employing clinical endpoints such as the dose needed for<br />

complete ovulation inhibition and effects on the endometrium<br />

and cervical mucus.<br />

Low risk of<br />

adverse<br />

androgenic<br />

events<br />

The receptor-binding affinity studies have indicated that<br />

etonogestrel has a high affinity for the progesterone receptor,<br />

only a low affinity for the androgen receptor and no significant<br />

binding affinity for the estrogen and glucocorticoid receptors.<br />

Figure 7 shows the selectivity index (relative binding affinity to<br />

progesterone versus androgen receptors) of etonogestrel, the<br />

active metabolite of DSG, and the progestogens<br />

norethisterone, levon<strong>org</strong>estrel and gestodene. (Kloosterboer et<br />

al 1987).<br />

11


Pharmacodynamics<br />

40<br />

30<br />

20<br />

10<br />

0<br />

norethisterone<br />

levon<strong>org</strong>estrel etonogestrel gestodene<br />

Fig. 7: Selectivity index of various progestogens<br />

Kloosterboer et al 1987<br />

Suppression of<br />

LH and FSH<br />

secretion<br />

The selectivity index was higher for etonogestrel than for the<br />

other progestogens, norethisterone, levon<strong>org</strong>estrel or<br />

gestodene. Receptor-binding studies do have certain<br />

limitations because the pharmacokinetics and<br />

pharmacodynamics of each compound are not considered.<br />

Nevertheless, they give an indication of the intrinsic properties<br />

of a progestogen and may contribute to the evaluation of<br />

animal and human data. This can be useful when comparing<br />

OCs with similar hormone doses and dose regimens.<br />

3.3 Effects on the pituitary ovarian axis<br />

The contraceptive efficacy of combined oral contraceptives is<br />

primarily due to the ovulation-inhibiting effect of the<br />

progestogen component at the level of the hypothalamus and<br />

pituitary gland. Gonadotrophin (LH and FSH) secretion is<br />

suppressed and as a result follicular maturation and ovulation<br />

are inhibited.<br />

Etonogestrel has been shown to have strong ovulationinhibiting<br />

properties when given in a daily oral dose of 60 µg<br />

(Skouby 1976; Cullberg et al 1982).<br />

<strong>Gracial</strong> contains a daily dose of desogestrel of 25 µg for seven<br />

days and 125 µg for the consecutive 15 days. The 22-day<br />

regimen permits an extremely low progestogen dose in the<br />

first seven days of the cycle, without compromising<br />

contraceptive reliability.<br />

12


Pharmacodynamics<br />

In an ultrasound study, Van der Vange et al (1988)<br />

investigated the effects of <strong>Gracial</strong> on ovarian activity, utilizing<br />

a "standard" 21- (7+14) day regimen. They found that the low<br />

progestogen dosage in the combiphasic regimen permitted<br />

more ovarian activity than did a conventional 30 µg EE<br />

monophasic pill containing DSG. However there was, in every<br />

case, complete inhibition of ovulation.<br />

Jung-Hoffman et al (1992) demonstrated that <strong>Gracial</strong> caused<br />

significant suppression of LH and FSH levels. This was<br />

confirmed by Kuhl et al (1993) (Figure 8) who demonstrated a<br />

significant reduction in gonadotrophin and a profound<br />

suppression of estradiol and progesterone levels, indicating<br />

impairment of follicular development and reliable inhibition of<br />

ovulation.<br />

Conclusion<br />

Pharmacodynamic studies have demonstrated that <strong>Gracial</strong><br />

suppresses gonadotrophin secretion and reliability inhibits<br />

ovulation.<br />

13


Pharmacodynamics<br />

mIU/ml<br />

7<br />

6<br />

5<br />

4<br />

3<br />

2<br />

1<br />

0<br />

pg/ml<br />

160<br />

140<br />

120<br />

100<br />

80<br />

60<br />

40<br />

20<br />

0<br />

ng/ml<br />

10<br />

9<br />

8<br />

7<br />

6<br />

5<br />

4<br />

3<br />

2<br />

1<br />

0<br />

Pretreatment<br />

cycle<br />

Pretreatment<br />

cycle<br />

Pretreatment<br />

cycle<br />

= LH<br />

= FSH<br />

Cycle 1 Cycle 3 Cycle 6<br />

LH and FSH<br />

Cycle 1 Cycle 3 Cycle 6<br />

Estradiol<br />

Cycle 1 Cycle 3 Cycle 6<br />

Progesterone<br />

Posttreatment<br />

cycle<br />

Posttreatment<br />

cycle<br />

Posttreatment<br />

cycle<br />

Fig. 8: Changes in FSH, LH, estradiol and<br />

progesterone serum concentrations on day<br />

21–24 of the pretreatment cycle, day 18–22<br />

of the first, third and sixth treatment cycle<br />

and day 21–24 of the post-treatment cycle<br />

Kuhl et al 1993<br />

14


Pharmacodynamics<br />

Prevention of<br />

sperm<br />

penetration<br />

3.4 Effect on cervical mucus<br />

Apart from ovulation inhibition, combined OCs have a second<br />

contraceptive effect: they block the cervical ostium to<br />

spermatozoa by keeping the cervical mucus thick and viscous<br />

(Diczfalusy 1968).<br />

During a normal menstrual cycle, the cervical ostium opens<br />

and the mucus becomes more liquid around the time of<br />

ovulation, facilitating sperm penetration. <strong>Gracial</strong> has been<br />

shown to inhibit these changes, thus preventing penetration of<br />

spermatozoa into the uterus. A low ‘Spinnbarkeit’ together<br />

with absence of ‘ferning’ have been consistently observed<br />

(Organon Scientific Development Group 1980).<br />

Conclusion<br />

Pharmacodynamic studies have demonstrated that <strong>Gracial</strong><br />

suppresses gonadotrophin secretion and reliably inhibits<br />

ovulation. <strong>Gracial</strong> also keeps the cervical mucus thick and<br />

viscous, thus preventing penetration of spermatozoa into<br />

the uterus.<br />

15


4. Contraceptive<br />

efficacy<br />

• The Pearl Index of <strong>Gracial</strong> is 0.0 for method failure and<br />

0.1 for user failure, confirming that <strong>Gracial</strong> is a very<br />

reliable Pill<br />

Pearl Index<br />

Contraceptive reliability can be expressed by means of the<br />

Pearl Index, which is an indication of the number of<br />

pregnancies likely to occur per 100 women per year during<br />

use of the method. Combined OCs belong to the group of<br />

contraceptives with the lowest Pearl Index of any reversible<br />

method of contraception: the Pearl Index of modern low-dose<br />

OCs is usually in the range of 0.1–1.<br />

The Pearl Index can be differentiated into the Pearl Index for<br />

‘user failure’ (including those pregnancies occurring when the<br />

Pill is incorrectly taken, e.g. in the case of f<strong>org</strong>otten tablets,<br />

vomiting, diarrhea, simultaneous use of interacting drugs) and<br />

for ‘method failure’ (pregnancies occurring when the Pill has<br />

been taken correctly).<br />

In a large-scale, multicenter study of <strong>Gracial</strong> in which 12,850<br />

cycles were evaluated (Table 2) (Dieben et al 1991) only one<br />

pregnancy occurred and this was attributed to a missed Pill.<br />

This gives a Pearl Index of 0.0 for method failure and 0.1 for<br />

user failure.<br />

Table 2: Pearl Index of <strong>Gracial</strong><br />

Pregnancies<br />

Total investigated<br />

cycles Method failure User failure<br />

12,850 0 1<br />

Pearl Index 0.0 0.1<br />

Dieben et al 1991<br />

The Pearl Index for <strong>Gracial</strong> is fully comparable with that of<br />

conventional low-dose monophasic OCs.<br />

Conclusion<br />

The Pearl Index obtained confirms that <strong>Gracial</strong> is a very<br />

reliable Pill.<br />

16


5. Acceptability<br />

•<strong>Gracial</strong> is associated with excellent cycle control and<br />

the incidence of irregular bleeding is low<br />

• The subjective side effects commonly reported by OC<br />

users are less apparent during use of <strong>Gracial</strong> than<br />

before OC use<br />

• The effects of <strong>Gracial</strong> on body weight are negligible<br />

•<strong>Gracial</strong> is a highly acceptable Pill that should prove<br />

especially suitable for women who experience<br />

unacceptable cycle control with any other low-dose OC<br />

Bleeding during<br />

OC use<br />

Spotting and<br />

breakthrough<br />

bleeding<br />

Withdrawal<br />

bleeding<br />

The acceptability of an OC is determined by subjective<br />

parameters, such as the incidence of side effects like nausea,<br />

headache and breast tenderness, and by more objective<br />

parameters such as cycle control and body weight. These<br />

factors will be discussed in this chapter.<br />

5.1 Cycle control<br />

One of the most important reasons for brand switching of OCs<br />

is poor cycle control. Cycle control is evidenced by the pattern<br />

of irregular bleeding and the heaviness and duration of<br />

withdrawal bleeding.<br />

Irregular bleeding is bleeding occurring during the tablettaking<br />

period, subdivided in studies into spotting - scanty<br />

bleeding requiring no hygienic measures or at most one<br />

sanitary pad per day, and breakthrough bleeding - bleeding<br />

requiring two or more sanitary pads per day.<br />

Withdrawal bleeding is bleeding that starts during the tablet<br />

free intervals. It is generally accepted and welcomed by Pill<br />

users as long as it is not heavier or of longer duration than the<br />

woman’s menstrual blood loss before commencing oral<br />

contraception.<br />

17


Acceptability<br />

Effect of <strong>Gracial</strong><br />

on irregular<br />

bleeding<br />

Irregular bleeding<br />

One of the objectives during the development of <strong>Gracial</strong> was<br />

to minimise irregular bleeding. In a large-scale, European<br />

multicenter study during which 882 women were followed<br />

during a total of more than 12,000 cycles (Dieben et al<br />

1991), excellent cycle control was noted. During <strong>Gracial</strong> use,<br />

the overall incidence of breakthrough bleeding and/or spotting<br />

decreased from 15.4% in the first cycle to 4% at the end of<br />

the study period.<br />

Subsequent detailed analysis of the study data (Dieben, Op<br />

ten Berg et al 1994) demonstrated that during <strong>Gracial</strong> use the<br />

incidence of breakthrough bleeding and/or spotting in<br />

switchers decreased from 14.2% in cycle 1 to 8.1% in cycle 6<br />

and to 5.7% by the end of the study period. Table 3 shows<br />

the incidence of spotting and breakthrough bleeding in<br />

switchers during <strong>Gracial</strong> use.<br />

Table 3: Incidence of irregular bleeding (%) in women<br />

using <strong>Gracial</strong> (switchers)<br />

Switchers<br />

Cycle S B S/B<br />

1 6.8 6.0 1.4<br />

3 4.4 4.9 0.3<br />

6 4.2 3.6 0.3<br />

12 3.5 2.2 0.0<br />

(S=Spotting B=Breakthrough bleeding) Dieben, Op ten Berg et al 1994<br />

The low incidence of irregular bleeding was associated with a<br />

correspondingly low overall dropout rate of 2.2% after 18<br />

cycles, as a result of irregular bleeding.<br />

Withdrawal bleeding<br />

Overall, withdrawal bleeding failed to occur in only 3.2% of<br />

the 12,850 cycles evaluated in the European multicenter<br />

study (Dieben et al 1991).<br />

Withdrawal bleeding occurred in 92.4% in cycle 1, 95% in<br />

cycle 3, 96.8% in cycle 6 and 98.2% in cycle 18 (Figure 9). In<br />

90% of the women, withdrawal bleeding started within the<br />

first four days of the tablet-free period.<br />

18


Acceptability<br />

Decrease in<br />

amount and<br />

duration of<br />

withdrawal<br />

bleeding<br />

The duration of withdrawal bleeding decreased slightly during<br />

the course of the study. Similarly, the amount of bleeding<br />

decreased in 25% of the women while a slight increase in<br />

amount of bleeding was reported by 5% (Dieben, Op ten Berg<br />

et al 1994).<br />

%<br />

100<br />

90<br />

92.4%<br />

95%<br />

96.8%<br />

98.2%<br />

80<br />

70<br />

60<br />

50<br />

40<br />

30<br />

20<br />

10<br />

0<br />

Cycle 1<br />

Cycle 2<br />

Cycle 6<br />

Cycle 18<br />

Fig. 9: Occurrence of withdrawal bleeding during<br />

<strong>Gracial</strong> use<br />

Dieben et al 1991<br />

In a more recent study, cycle control was found to be<br />

significantly improved after switching to <strong>Gracial</strong> (Vree 2000).<br />

In this study, the incidence of spotting and breakthrough<br />

bleeding decreased from 33.2% and 23.2% of women<br />

respectively in the cycle before starting <strong>Gracial</strong>, to 6.8% and<br />

3.4% of women at the end of the study period (Figure 10).<br />

19


Acceptability<br />

% of women<br />

35<br />

30<br />

25<br />

20<br />

15<br />

10<br />

5<br />

0<br />

Spotting<br />

Previous OC<br />

Breakthrough bleeding<br />

<strong>Gracial</strong><br />

Fig. 10: Incidence of spotting and breakthrough<br />

bleeding before and after switching to <strong>Gracial</strong><br />

Vree 2000<br />

Low incidence of<br />

side effects<br />

5.2 Side effects<br />

As with all OCs, side effects with <strong>Gracial</strong> tended to be reported<br />

more frequently in the first few cycles of use, thereafter<br />

decreasing. Women who switched to <strong>Gracial</strong> from another OC<br />

showed a marked improvement after 12 cycles (Table 4).<br />

Table 4: Incidence of subjective side effects in switchers<br />

Breast<br />

Nausea Headache Nervousness Depression tenderness<br />

Pretreatment 3.7% 9.4% 6.6% 4.5% 6.6%<br />

Cycle 1 3.4% 3.7% 3.9% 0.8% 5.2%<br />

Cycle 3 1.1% 5.2% 2.7% 1.1% 3.0%<br />

Cycle 12 0% 2.5% 2.1% 0.4% 0.7%<br />

Dieben, Op ten Berg et al 1994<br />

In starters it has been shown that minor complaints commonly<br />

reported by OC users are less apparent during the use of<br />

<strong>Gracial</strong> than before OC use (Figure 11).<br />

20


Acceptability<br />

%<br />

0<br />

Nausea<br />

Headache<br />

Nervousness Depression<br />

Breast<br />

tenderness<br />

-0.5<br />

-1<br />

-1.5<br />

-2<br />

-2.5<br />

-3<br />

-3.5<br />

-4<br />

-4.5<br />

-1.5<br />

-4<br />

-3.3<br />

-1.1<br />

-3.1<br />

Fig. 11: Changes in incidence of subjective side<br />

effects after six cycles of <strong>Gracial</strong> (compared<br />

to levels before Pill use) in starters<br />

Dieben, Op ten Berg et al 1994<br />

Negligible effect<br />

on body weight<br />

5.3 Body weight<br />

Body weight was measured every three months in the<br />

multicenter study. There was a mean increase in weight of<br />

between 0.1 and 0.6 kg above pretreatment weight over 18<br />

cycles. Since almost 20% of the study population were aged<br />

under 20 and the actual weight changes were very small, it is<br />

probable that they were merely a reflection of normal growth.<br />

Therefore, as with other low-dose OCs, the effect of <strong>Gracial</strong> on<br />

body weight is negligible and merely reflects the natural<br />

growth in younger women.<br />

5.4 Continuation rate<br />

Overall dropout rate due to bleeding irregularities was 2.2%,<br />

and 4.3% due to minor side effects. These very low figures<br />

illustrate the high acceptability of <strong>Gracial</strong>.<br />

Conclusion<br />

The excellent cycle control during <strong>Gracial</strong> use, together with a<br />

low incidence of subjective side effects and negligible effect on<br />

body weight, makes <strong>Gracial</strong> a highly acceptable Pill. It should<br />

prove especially suitable for women who experience<br />

unacceptable cycle control with any other low-dose OC.<br />

21


6. <strong>Gracial</strong> and mild to<br />

moderate acne<br />

•<strong>Gracial</strong> significantly increases levels of SHBG and<br />

reduces free testosterone<br />

• These serum changes in SHBG and free testosterone<br />

result in a marked reduction in the incidence and<br />

severity of acne<br />

• The improvement in acne seen with <strong>Gracial</strong> is<br />

comparable to that seen with cyproterone acetate<br />

Androgenic skin<br />

disorders<br />

Occurrence or worsening of androgenic skin disorders is also a<br />

reason for brand switching of oral contraceptives, especially in<br />

younger women (Oddens et al 1994). This can be a<br />

consequence of the androgenicity of the progestogen<br />

component.<br />

More androgenic OCs may worsen these skin disorders (and<br />

even induce them in those previously free of such conditions).<br />

One of the underlying factors is an increased total serum<br />

testosterone and/or decreased sex hormone binding globulin<br />

(SHBG) levels, leading to an increase in free serum<br />

testosterone.<br />

In general, exogenous estrogens increase SHBG levels. As a<br />

consequence, more testosterone can be bound to SHBG,<br />

resulting in a decrease of free testosterone in the blood. This<br />

decrease of free testosterone in the blood can lead to an<br />

improvement in mild to moderate acne.<br />

6.1 Effect on SHBG and testosterone<br />

Due to its unique dosage regimen, <strong>Gracial</strong> is slightly estrogen<br />

dominant. In addition, the active progestogen component of<br />

<strong>Gracial</strong> is the most selective of the progestogens used in<br />

combined oral contraceptives. This profile suggests that<br />

<strong>Gracial</strong> has beneficial effects on acne.<br />

22


<strong>Gracial</strong> and mild to moderate acne<br />

Increase in<br />

SHBG levels<br />

Jung-Hoffmann et al (1992) showed that <strong>Gracial</strong> induced a<br />

significant increase in SHBG (+250%) which was sustained for<br />

some weeks after discontinuation of therapy. This finding was<br />

confirmed by Falsetti (1991) and by Kuhl et al (1993) who<br />

subsequently also demonstrated a reduction of 55% of free<br />

serum testosterone levels in <strong>Gracial</strong> users (Figure 12).<br />

nmol/ml<br />

250<br />

200<br />

150<br />

100<br />

50<br />

0<br />

pg/ml<br />

3.0<br />

2.5<br />

2.0<br />

1.5<br />

1.0<br />

0.5<br />

0<br />

Pre-treatment<br />

cycle<br />

Pre-treatment<br />

cycle<br />

Cycle 1 Cycle 2 Cycle 6<br />

SHBG<br />

Cycle 1 Cycle 3 Cycle 6<br />

free testosterone<br />

Posttreatment<br />

cycle<br />

Posttreatment<br />

cycle<br />

Fig. 12: Effects of <strong>Gracial</strong> treatment on serum SHBG<br />

and free testosterone<br />

Kuhl et al 1993<br />

6.2 Clinical effects<br />

In the study by Falsetti (1991), these serum changes in SHBG<br />

and free testosterone levels were associated with a marked<br />

reduction in the incidence and severity of acne. Of 30 women<br />

suffering from a mainly mild to moderate grade of acne, 18<br />

were cured after nine cycles of <strong>Gracial</strong> and in the remaining<br />

12 only mild acne remained.<br />

23


<strong>Gracial</strong> and mild to moderate acne<br />

<strong>Gracial</strong> has<br />

beneficial effects<br />

on mild to<br />

moderate acne<br />

These findings have been confirmed in a study by Volpe et al<br />

(1994) in which almost 80% of a group of 33 young women<br />

with acne were cured or greatly improved during 12 cycles of<br />

<strong>Gracial</strong> use.<br />

Dieben and Vromans (1994) carried out a comparative study<br />

of <strong>Gracial</strong> with a preparation containing 35 µg EE/2 mg<br />

cyproterone acetate (EE/CPA) per day and found that in both<br />

groups there was an equal reduction in degree of severity and<br />

number of acne lesions. Overall there was no statistically<br />

significant difference between the two preparations in their<br />

effects on acne (Figure 13).<br />

Mean acne grade<br />

1.0<br />

0.5<br />

0.69<br />

0.52<br />

0.54<br />

0.41<br />

0<br />

Pretreatment<br />

cycle<br />

EE/CPA<br />

Cycle 4<br />

Pretreatment<br />

cycle<br />

<strong>Gracial</strong><br />

Cycle 4<br />

Fig. 13: Effects of <strong>Gracial</strong> and EE/CPA on acne<br />

Dieben, Vromans 1994<br />

24


<strong>Gracial</strong> and mild to moderate acne<br />

Number and<br />

severity of acne<br />

lesions reduced<br />

Recently, the effects of <strong>Gracial</strong> on acne were again compared<br />

with those of an OC preparation containing ethinylestradiol and<br />

cyproterone acetate (2.0 mg cyproterone acetate/35 µg EE)<br />

(Melief 2000). The study (in which 172 women were randomized<br />

to either treatment) found that <strong>Gracial</strong> progressively reduced<br />

the number and severity of acne lesions during the six cycles of<br />

treatment. In both groups, the majority of women with severe<br />

acne shifted to a less severe acne category (Figure 14). The<br />

efficacy of <strong>Gracial</strong> was comparable to the preparation containing<br />

the antiandrogen cyproterone acetate and no statistically<br />

significant differences were observed between the two groups.<br />

%<br />

100<br />

90<br />

80<br />

70<br />

60<br />

50<br />

40<br />

30<br />

20<br />

10<br />

0<br />

%<br />

100<br />

90<br />

80<br />

70<br />

60<br />

50<br />

40<br />

30<br />

20<br />

10<br />

0<br />

A<br />

0 3 6 0 3 6<br />

Combiphasic EE/DSG<br />

EE35/CPA<br />

B<br />

0 3 6 0 3 6<br />

Combiphasic EE/DSG<br />

EE35/CPA<br />

Severe Moderate Mild No acne<br />

Fig. 14: Objective (A) and subjective (B) classification<br />

of severity of acne at pretreatment, Cycle 3<br />

and Cycle 6<br />

25<br />

Melief 2000


<strong>Gracial</strong> and mild to moderate acne<br />

Reduction in<br />

severity of acne<br />

Another recent noncomparative clinical evaluation of women<br />

who switched from a different OC to <strong>Gracial</strong> showed a<br />

reduction in the severity of acne during treatment with <strong>Gracial</strong><br />

(Figure 15) (Vree 2000).<br />

100<br />

80<br />

52%<br />

% of women<br />

60<br />

40<br />

35%<br />

77%<br />

20<br />

18%<br />

0<br />

Previous OC<br />

(n=592)<br />

No. of papules/pustules:<br />

<strong>Gracial</strong><br />

(n=396)<br />

1–5 6–10 >10<br />

Fig. 15: Changes in acne severity after switching to<br />

<strong>Gracial</strong><br />

Vree 2000<br />

Conclusion<br />

<strong>Gracial</strong> significantly increases SHBG levels and reduces free<br />

testosterone, which results in an improvement in the incidence<br />

and severity of mild to moderate acne comparable to that of<br />

cyproterone acetate.<br />

26


7. Safety aspects<br />

• The effects of <strong>Gracial</strong> on hemostatic parameters are<br />

comparable to those of classic triphasic regimens<br />

•<strong>Gracial</strong> has mainly beneficial effects on lipid<br />

metabolism and no clinically adverse effects on<br />

carbohydrate metabolism<br />

•<strong>Gracial</strong> has not been found to have any consistent<br />

adverse effects on blood pressure<br />

• The association between OCs and venous<br />

thromboembolism is likely to be influenced by the<br />

amount of estrogen in the Pill and not by the type of<br />

progestogen<br />

• The risk of AMI is significantly lower in users of third<br />

generation OCs than that seen with older-generation Pills<br />

• The risk of stroke in users of third-generation OCs is not<br />

increased<br />

• OC use substantially reduces the incidence of ovarian<br />

and endometrial cancer<br />

As oral contraceptives are used for long periods of time by<br />

healthy young women for the main purpose of preventing<br />

pregnancy, manufacturers have constantly striven to identify<br />

and minimize potential health risks. From the time of its first<br />

introduction, the Pill has provided virtually 100%<br />

contraceptive efficacy. As a result, most of the developments<br />

in oral contraception over the last 35 years have been driven<br />

by the search for ever better safety and tolerability.<br />

Consequently, any health risk attributable to modern OCs is<br />

small in comparison to the risk to health posed by an<br />

unwanted pregnancy.<br />

Epidemiological<br />

data<br />

New epidemiological data have recently become available<br />

which cast new light upon the association between<br />

cardiovascular disease and OC use. In addition, new data<br />

concerning gynecological cancer risk have also been<br />

published.<br />

27


Safety aspects<br />

<strong>Gracial</strong> not<br />

included in<br />

epidemiology<br />

Since <strong>Gracial</strong> has been on the market for a relatively short<br />

period of time in relatively few countries, it has not been<br />

included in the epidemiological studies on OCs and<br />

cardiovascular disorders. Therefore, an overview of the effects<br />

of <strong>Gracial</strong> on intermediate endpoints associated with lipid<br />

metabolism, carbohydrate metabolism and hemostasis is also<br />

presented in this chapter.<br />

7.1 Venous thromboembolism<br />

The association between OC use and the occurrence of<br />

venous thromboembolism (VTE) is one of the most important<br />

safety aspects that shaped the development of the Pill. It<br />

became apparent within a few years after the introduction of<br />

the Pill that this association was related to its estrogen<br />

component. Studies clearly demonstrated that as the estrogen<br />

dose was progressively reduced, from 100 µg to 50 µg EE by<br />

the 1970s and then down to 30–35 µg, the incidence of<br />

thrombotic events in oral contraceptive users decreased<br />

accordingly (Vessey 1988; Gerstmann et al 1991; RCGP<br />

1978; Farmer 1995).<br />

Hemostasis<br />

In the early years following the introduction of low-dose<br />

(30 µg) Pills such as Marvelon, which utilizes the third-generation<br />

progestogen desogestrel, epidemiological data for their effects<br />

on VTE was not available. Therefore, measurable indicators on<br />

the function of the vascular system, such as hemostatic<br />

parameters, were investigated to determine the impact of OCs.<br />

Effect on<br />

hemostatic<br />

parameters<br />

Changes in hemostatic parameters with <strong>Gracial</strong> (both 22- and<br />

21-day regimens) were comparable to a classic triphasic<br />

regimen. The effects of <strong>Gracial</strong> on hemostatic parametes have<br />

been compared with those of Triodeen (triphasic EE +<br />

gestodene) over a period of six treatment cycles (van Enk et<br />

al, manuscript in preparation). In general, there were<br />

significant changes in all hemostatic parameters with both<br />

<strong>Gracial</strong> and triphasic gestodene.<br />

The following specific differences were noted. <strong>Gracial</strong><br />

produced a significantly larger increase in factor VII (in cycles<br />

3 and 6), a significantly smaller increase in fibrinogen (in cycle<br />

3) and plasminogen (in cycle 6), and significantly larger<br />

decreases in antithrombin III (in cycle 6), protein S (total) (in<br />

cycle 3), protein S (free) (in cycles 3 and 6) and plasminogen<br />

activator inhibitor I (PAI-I-Act) (in cycles 3 and 6). After six<br />

cycles of <strong>Gracial</strong> use, there was no significant change from<br />

baseline in fibrinopeptide A.<br />

28


Safety aspects<br />

<strong>Gracial</strong> has a standard dose of EE (average of 33 µg/day) and<br />

has demonstrated effects on hemostatic parameters<br />

comparable to that of a classic triphasic regimen.<br />

Initial confusion<br />

Epidemiological data<br />

In 1995 and 1996, new epidemiological data on the<br />

association between Pill use and the risk of VTE became<br />

available, which initially caused great confusion because they<br />

were quite at variance with understanding of the issues at the<br />

time (WHO 1995; Jick et al 1995; Spitzer et al 1996).<br />

It was reported that OCs containing the same dose of 30 µg<br />

EE were associated with different odds ratios for VTE<br />

depending upon their progestogen component [levon<strong>org</strong>estrel<br />

(LNG), desogestrel (DSG) or gestodene (GSD)]. The odds ratio<br />

of VTE in users of OCs containing DSG or GSD ranged between<br />

1.5 and 2.2 compared to women using OCs containing LNG.<br />

This finding was in contrast to the medical consensus from the<br />

preceding 35 years of Pill research, in which the risk of VTE<br />

had been shown to decline in parallel with reductions in the<br />

EE dose, irrespective of the progestogen (RCGP 1974; Sartwell<br />

et al 1969; Vessey et al 1977; Gerstmann et al 1991).<br />

In the context of existing and new epidemiological data, it<br />

appeared that the incidence of this venous complication in<br />

women using a third-generation OC (a low dose of EE in<br />

combination with either DSG or GSD) was approximately the<br />

same as that in women using a second-generation OC (a low<br />

dose of EE in combination with LNG) 10 years earlier.<br />

Surprisingly, however, the incidence of VTE in the latter group<br />

had reduced over time. It became clear that the observed<br />

difference in risk of VTE between OC generations was due to a<br />

reduction in the incidence of venous complications with the<br />

second-generation Pills over time, rather than to an<br />

unexpected increase with third-generation Pills.<br />

Healthy user<br />

effect<br />

This decline in incidence of VTE over time has been attributed<br />

to the so-called ‘healthy user’ effect (i.e. the selective removal<br />

of high-risk persons from a cohort of users over time), which<br />

has been operational with the introduction of each new oral<br />

contraceptive (RCGP 1974, 1978; Jick et al 1995; WHO<br />

1995; Gerstmann et al 1991; Vessey 1988; Lewis et al 1996).<br />

In the group of women starting with the Pill, a certain<br />

proportion is expected to have a not yet identified<br />

predisposition to VTE. If these women develop VTE, they will<br />

discontinue use of their OC as they become contraindicated.<br />

29


Safety aspects<br />

The incidence of VTE in the remaining ‘healthy user’ group<br />

then becomes less and less over time. This is the major factor<br />

responsible for the ‘healthy user’ effect.<br />

OC1<br />

OC2<br />

Number of adverse events<br />

time<br />

Fig. 16: User cohort effect (the ‘healthy user’ effect)<br />

or attrition of the susceptibles<br />

(Lewis et al 1997)<br />

Selective<br />

prescribing<br />

A second biasing factor was also operating in the<br />

epidemiological studies called prescribing bias or selective<br />

prescribing. The third-generation Pills were selectively<br />

prescribed to women with risk factors for cardiovascular<br />

disease, such as age, personal or family history of VTE, clinical<br />

venous signs, chronic inflammatory disease, anesthesia or<br />

plaster cast, obesity, diabetes, standing working position,<br />

alcohol abuse, smoking or a combination of risk factors<br />

(Lunsen van 1996; Lis et al 1993; Poulter et al 1996;<br />

Heinemann et al 1996; Farmer 1996; Herings et al 1996;<br />

Jamin and De Mouzon 1996; Lewis et al 1996; Farmer et al<br />

1997; Lidegaard 1997; Dunn et al 1998). As a result of<br />

selective prescribing, cardiovascular adverse effects could be<br />

more frequently observed in users of the third-generation OCs.<br />

30


Safety aspects<br />

Adjusting for<br />

bias<br />

In more recent epidemiological studies (Farmer et al 1997,<br />

1998; Lewis et al 1999; Lidegaard et al 1998; Suissa et al<br />

1997), it was possible to adjust more appropriately for these<br />

newly recognized biases than in previous studies. This was due<br />

to a better understanding of the ways in which these biases<br />

influence results. In this context, the user age and duration of<br />

OC use appear to be closely related to prescribing bias and<br />

the ‘healthy user’ effect. When adjusting for these factors, the<br />

newer analyses consistently observed no difference in the risk<br />

of VTE between second- and third-generation OC users, thus<br />

confirming the likelihood that the initial differences in the<br />

1995 studies were caused by bias and confounding.<br />

The view that the initial studies were biased was substantiated<br />

by a recent analysis by Farmer et al (1999), which reduced<br />

the confounding effects of age and, indirectly, duration of use<br />

to a minimum. This study observed no differences between<br />

odds ratios for VTE in second- and third-generation OC users.<br />

This finding was confirmed in the final analysis of the<br />

Transnational study (Lewis et al 1999), which integrated the<br />

full OC exposure history in their original case-control analysis.<br />

The results of the final analysis are shown in the table below<br />

and suggest that the odds ratio of VTE compared to non-users<br />

is related to the dose of estrogen in the OC and is<br />

independent of the type of progestogen used. The lowest<br />

odds ratios (1.6–2.5) were associated with the low-dose, thirdgeneration<br />

OCs and the highest (8.5) with the first-generation<br />

OCs containing 50 µg estrogen or more. The odds ratios for<br />

VTE with OCs containing 30 µg of EE but different<br />

progestogens (DSG, GSD or LNG) were similar.<br />

31


Safety aspects<br />

Table 5: Relative risk estimates for VTE for different exposures compared<br />

with non-use or second-generation OC use<br />

Current exposure Reference group Odds ratio 95% CI<br />

All OCs No current use 2.9 2.1-4.1<br />

1st generation OCs No current use 8.5 3.0-23.9<br />

2nd generation OCs No current use 2.9 1.9-4.2<br />

Levon<strong>org</strong>estrel OCs No current use 2.6 1.8-4.0<br />

N<strong>org</strong>estimate OCs No current use 3.7 2.2-6.1<br />

3rd generation OCs No current use 2.3 1.5-3.5<br />

Desogestrel/30 EE OCs No current use 2.5 1.6-4.1<br />

Gestodene OCs No current use 2.3 1.4-3.6<br />

Desogestrel/20 EE OCs No current use 1.6 0.9-2.9<br />

3rd generation OCs 2nd generation OCs 0.8 0.5-1.3<br />

(Lewis et al 1999)<br />

Conclusion<br />

It can be concluded that after appropriate adjustments for<br />

relevant confounders and distorting factors, the risk of VTE is<br />

similar for OCs containing the same estrogen doses,<br />

irrespective of the progestogen component.<br />

32


Safety aspects<br />

7.2 Arterial disease<br />

Epidemiological studies have suggested an association<br />

between OCs and arterial disease. As the more androgenic<br />

progestogens have been shown to have a greater adverse<br />

effect on lipid metabolism (with a potential increase in the risk<br />

of arterial diseases such as myocardial infarction and stroke;<br />

Meade et al 1980; Kay 1982), new types of progestogens<br />

were developed with a high level of progestogenic activity, but<br />

substantially reduced androgenic properties.<br />

Risk factors<br />

Etiology<br />

In the population at large, major recognized risk factors for<br />

myocardial infarction (MI) have been identified: age, smoking,<br />

diabetes, hypertension, hypercholesterolemia and a family<br />

history of MI. Some studies, attempting to determine if<br />

women with established risk factors for MI are especially at<br />

risk of this disease while using OCs, have found an interaction<br />

between current OC use and heavy smoking (Rosenberg et al<br />

1990; Croft and Hannaford 1989), and between OC use and<br />

older age (Mann and Inman 1975; Kreuger et al 1980).<br />

The etiology of OC-associated venous thrombosis and<br />

myocardial infarction may differ from each other in an<br />

important aspect. Endothelial damage does not seem to be a<br />

prerequisite for the formation of a venous thrombus (Godsland<br />

and Crook 1996). In contrast, hemodynamic considerations<br />

alone make it unlikely that an arterial thrombus will<br />

accumulate on an entirely intact endothelium. An imbalance in<br />

the normal cycle of arterial endothelial damage and repair, or<br />

the endothelial and intimal lesions seen in OC users, could<br />

result in platelet adhesion and activation and thrombus<br />

accumulation in an apparently normal artery. This process will<br />

be opposed by circulating factors which promote endothelial<br />

integrity, and will be helped along by those factors which<br />

disrupt endothelial function. There are three major candidates<br />

for involvement in these processes: serum triglycerides, HDLcholesterol<br />

and insulin (Godsland and Crook 1996).<br />

Lipoprotein metabolism<br />

Oral contraceptives have effects on a number of the serum<br />

lipoproteins, but the most significant of these effects are<br />

thought to be those on triglycerides and HDL-cholesterol.<br />

33


Safety aspects<br />

Oral contraceptives induce a rise in serum triglycerides which,<br />

in contrast to that associated with atherosclerosis, is due to an<br />

increase in synthesis rather than a decrease in clearance. In<br />

epidemiological studies, triglycerides do not seem to be an<br />

independent risk factor for cardiovascular disease in women.<br />

In addition, other drugs which increase serum triglyceride<br />

levels (e.g. postmenopausal estrogens, alcohol and<br />

cholestyramine) reduce the risk of MI (Castelli 1988).<br />

HDL-cholesterol appears to exert anti-atherosclerotic effects in<br />

several ways (Godlands and Crook 1996). HDL-cholesterol<br />

preserves endothelial integrity by: eliminating lipid<br />

peroxidation products; stabilizing the vasodilator and antiplatelet<br />

agent, prostacyclin; inhibiting endothelial-based<br />

inflammatory responses via a diminution of expression of<br />

endothelial wall adhesion molecules; protecting erythrocytes<br />

against procoagulatory activity; ameliorating abnormal<br />

vasoconstriction; suppressing smooth muscle cell proliferation.<br />

Not surprisingly, elevated HDL levels are consistently<br />

associated with low coronary artery disease rates, especially<br />

in women (Castelli 1988).<br />

Low-estrogen-dose OCs containing the older progestogen,<br />

levon<strong>org</strong>estrel, do not affect or reduce HDL, whereas those<br />

containing third-generation progestogens tend to increase HDL<br />

levels. This variation could be expected to result in differences<br />

in MI rates in users of different brands of OCs and there is<br />

evidence that this may be the case (WHO 1997; Jick et al<br />

1996; Lewis et al 1997a, b; Lidegaard and Edström 1996).<br />

Effect of <strong>Gracial</strong><br />

on lipid<br />

metabolism<br />

<strong>Gracial</strong> has demonstrated a clear and significant increase in<br />

HDL-cholesterol (10–30%), a slight increase in LDLcholesterol,<br />

an increase in triglycerides, a 25% decrease in<br />

apolipoprotein E and a transitory decrease in Lp(a) (Kuhl et al<br />

1993). These findings are consistent with an estrogendominant<br />

Pill.<br />

The effects of <strong>Gracial</strong> on lipid parameters were compared with<br />

those of triphasic gestodene over a period of six cycles (Van<br />

Enk et al, manuscript in preparation, NV Organon, Oss). In<br />

general, there were significant changes in lipid parameters<br />

with both OCs. At cycle 6, <strong>Gracial</strong> produced significantly larger<br />

increases in HDL-cholesterol, HDL-3 cholesterol,<br />

apolipoprotein A1 and triglycerides. LDL-cholesterol increased<br />

more with triphasic gestodene.<br />

34


Safety aspects<br />

Since falling levels of LDL-cholesterol and rising levels of HDLcholesterol<br />

are both considered positive changes, <strong>Gracial</strong>'s<br />

influence on lipid metabolism can be regarded as favorable.<br />

Carbohydrate metabolism<br />

Insulin resistance and accompanying hyperinsulinemia may<br />

induce adverse changes in MI risk via metabolic mechanisms<br />

and effects on blood pressure. Insulin can also have<br />

deleterious effects on the vascular wall by inducing smooth<br />

muscle proliferation and lipid deposition. All oral<br />

contraceptives cause some degree of insulin resistance, but<br />

the effects of currently used low-estrogen-dose OCs vary<br />

considerably. The greatest degree of insulin resistance is seen<br />

with Pills containing levon<strong>org</strong>estrel and the least with those<br />

containing desogestrel (Godsland and Crook 1996).<br />

Effect of <strong>Gracial</strong><br />

on carbohydrate<br />

metabolism<br />

<strong>Gracial</strong> has been shown (Kuhl 1993) to have only minor<br />

effects on plasma insulin and glucose levels following glucose<br />

loading, and no clinically significant effect on fasting insulin<br />

levels or plasma glucose levels.<br />

These results are similar to those reported for other low-dose<br />

oral contraceptives and show that <strong>Gracial</strong> has no clinically<br />

significant effects on carbohydrate metabolism.<br />

No adverse<br />

effect on blood<br />

pressure<br />

Blood pressure<br />

Older studies have shown small increases in blood pressure<br />

with prolonged use of high-estrogen dose OCs. However,<br />

<strong>Gracial</strong> has not been found to have any consistent adverse<br />

effects on blood pressure.<br />

In the multicenter study of Dieben et al (1991), blood<br />

pressure was measured both before use and after every three<br />

cycles of <strong>Gracial</strong>. Particular attention was paid to the 499<br />

women who had not used oral contraception before<br />

('starters'), as any change in blood pressure as a result of<br />

<strong>Gracial</strong> use ought to be most evident in this group. In fact,<br />

blood pressure changes were inconsistent and their magnitude<br />

was close to the limits of error in measurement.<br />

Epidemiological data<br />

In the last few years, several studies have provided new<br />

epidemiological data on arterial disease, acute myocardial<br />

infarction (AMI) and stroke (Jick et al 1996; Heinemann et al<br />

1997; Lewis et al 1997; Lidegaard 1998; Dunn 1999;<br />

WHO 1996).<br />

35


Safety aspects<br />

Stroke<br />

With regard to ischemic stroke, new data have been generated<br />

in the WHO study (WHO 1996), the Transnational study<br />

(Heinemann et al 1997) and a Danish case-control study<br />

(Lidegaard and Kreiner 1998).<br />

The studies are not entirely consistent in their findings. The<br />

stroke publication of the WHO Collaborative Group provides<br />

separate information for the participating centers in Europe<br />

and for those in developing countries. Although the European<br />

data show no difference in the risk of stroke between Pill<br />

generations, the risk of stroke in second-generation OC users<br />

is statistically significantly increased in the centers from the<br />

developing countries, while no increase was found for users of<br />

the third-generation OCs.<br />

The odds ratios in the Transnational study (Heinemann et al<br />

1997) are higher than those observed in the WHO study and<br />

also depend on the type of control group. No differences<br />

between OCs of the second- and third-generation were<br />

observed.<br />

The study by Lidegaard and Kreiner (1998) concluded that<br />

OCs with 50 µg EE and OCs with second-generation<br />

progestogens significantly increased the risk of cerebral<br />

thromboembolic attacks (CTA), which include thrombotic<br />

strokes. However, OCs with third-generation progestogens did<br />

not have any significant influence on the risk of CTA.<br />

Acute MI<br />

The risk of myocardial infarction was assessed in five studies.<br />

In the Transnational AMI study (Lewis et al 1997), the risk of<br />

AMI was observed to be significantly increased in secondgeneration<br />

OC users versus no use, and was not increased in<br />

third-generation OC users compared to no use. When<br />

comparing second- and third-generation OC users, a<br />

statistically significant, three times lower risk was observed for<br />

users of the third-generation OCs (OR 0.3, 95% CI 0.1–0.9).<br />

The authors of the publication concluded that third-generation<br />

OCs are the first class of OCs not to be associated with MI.<br />

36


Safety aspects<br />

*<br />

3<br />

2.5<br />

***<br />

**<br />

OR of AMI<br />

2<br />

1.5<br />

1<br />

0.5<br />

0<br />

2nd-generation<br />

3rd-generation<br />

* 2nd gen vs. non-use: 3.0 (1.5–5.7)<br />

** 3rd gen vs. non-use: 0.8 (0.3–2.3)<br />

*** 3rd gen vs. 2nd-gen: 0.3 (0.1–0.9)<br />

Non-use<br />

Fig. 17: Transnational study – case-control analysis<br />

Risk of acute myocardial infarction<br />

(Lewis et al 1997)<br />

The Danish case-control analysis (Lidegaard 1997) is<br />

consistent with an increased risk of AMI in users of secondgeneration<br />

OCs and an absence of such risk in thirdgeneration<br />

OC users, but the difference was not statistically<br />

significant between OC types.<br />

Findings on AMI were also published by Jick and colleagues<br />

(1996), as well as the WHO Collaborative Group (1997). They<br />

both observed a lower risk of AMI with the third-generation<br />

OCs compared to the second-generation OCs, but the<br />

difference was not significant, probably as a result of the small<br />

size of these analyses. The study of Dunn and colleagues<br />

(MICA) is the only study not showing a benefit with third<br />

generation OCs. This study was done retrospectively and<br />

showed signs of being affected by recall bias influenced by the<br />

awareness created by the Pill scare of 1995.<br />

Although the importance of HDL in arterial disease has been<br />

established in almost every type of population, these new<br />

epidemiological studies may be the first indication that an OCinduced<br />

increase in HDL would also be beneficial.<br />

37


Safety aspects<br />

Influence of<br />

adjustment for<br />

bias<br />

Conclusion<br />

It is probable that the prescribing bias and ‘healthy user’<br />

effect that influenced the VTE studies have also affected the<br />

stroke and AMI studies. Both phenomena induce an unequal<br />

distribution of women at risk of cardiovascular disease over<br />

the different OCs. The effect of adjustment for these biases<br />

would be that the risk of VTE, stroke and AMI would go down<br />

in users of third-generation OCs, but increase in users of<br />

second-generation OCs. The difference in VTE risk would<br />

therefore disappear (as evidenced by the studies of Farmer et<br />

al 1997, 1998, 1999; Lewis et al 1999; Lidegaard et al<br />

1998; Suissa et al 1997, 2000), whereas a beneficial effect of<br />

third-generation OCs regarding stroke may be masked and the<br />

beneficial effect of third-generation OCs regarding AMI would<br />

become even more prominent.<br />

<strong>Gracial</strong> has been shown to have favorable effects on lipid<br />

metabolism and minimal effects on carbohydrate metabolism,<br />

both factors that are known to play a role in the etiology of<br />

cardiovascular disease. The data on stroke are not fully<br />

consistent, but suggest that there is no difference in the risk of<br />

stroke between Pill generations. The risk of myocardial<br />

infarction in users of newer Pills is the same as in non-users of<br />

oral contraception and seems to be lower than the risk in<br />

users of second-generation Pills.<br />

7.3 Gynecological cancer<br />

Concern about a possible association between oral<br />

contraceptive use and increased risk of gynecological cancer<br />

has been present virtually since the introduction of the Pill.<br />

However, epidemiological data indicate that the risk of<br />

endometrial and ovarian cancer is actually reduced in OC<br />

users compared to ‘never-users’ (Stanford 1991; Vessey and<br />

Painter 1995). Although the odds ratio for breast cancer is<br />

slightly higher in current OC users, the breast cancer was more<br />

likely to be diagnosed at an earlier stage and less likely to<br />

have spread beyond the breast than in never-users<br />

(Collaborative Group on Hormonal Factors in Breast Cancer<br />

1996). The association between cervical cancer and OC use<br />

remains inconclusive (Brinton 1991; Zondervan et al 1996).<br />

38


Safety aspects<br />

Breast cancer<br />

In the mid-1980s, preliminary results from early<br />

epidemiological studies suggested that the use of combined<br />

oral contraceptives was associated with an increase in the risk<br />

of breast cancer. However, in the last two decades, numerous<br />

epidemiological studies have been published, and the<br />

consensus has been that OC use has no overall effect on the<br />

risk of breast cancer, except perhaps in certain subgroups of<br />

women.<br />

The Collaborative Group on Hormonal Factors in Breast<br />

Cancer (1996) carried out a meta-analysis of 54<br />

epidemiological studies involving over 50,000 women with<br />

breast cancer, mainly published between 1980 and 1995.<br />

From this meta-analysis, it emerged that:<br />

OC use and<br />

breast cancer<br />

1. Compared to non-users, current users of OCs have a<br />

slightly increased risk of having breast cancer diagnosed<br />

(relative risk 1.24). This risk disappears after 10 years of<br />

discontinuation.<br />

2. The risk of breast cancer is not associated with the<br />

duration of use or dose or type of hormone in the<br />

combined OC. There is no synergism with other risk factors<br />

for breast cancer (e.g. family history).<br />

3. Breast cancer in ‘ever-users’ of OCs was more likely to be<br />

diagnosed at an earlier stage and less likely to have spread<br />

beyond the breast than in ‘never-users’.<br />

39


Safety aspects<br />

On balance, this study is very reassuring. The finding that use<br />

of the Pill does not increase the overall lifetime risk of breast<br />

cancer is very positive, as is the fact that breast cancer in<br />

users or former users of OCs is less likely to have metastasized<br />

at the time of diagnosis. The risk of having breast cancer<br />

diagnosed is slightly increased in current users of the Pill, but<br />

not in those who used an OC 10 years ago. This suggests that<br />

the Pill does not initiate cancer of the breast because the risk<br />

of cancer following exposure to known carcinogens depends<br />

upon the amount and overall duration of exposure and not<br />

upon the length of time elapsed since exposure. It has been<br />

hypothesized that the increased risk of breast cancer in<br />

current users could reflect a higher likelihood of diagnosis as a<br />

result of more frequent professional surveillance and selfexamination<br />

in Pill users. Alternatively, the Pill may be acting<br />

as a promoter of pre-existing breast cancer, thereby advancing<br />

the time at which it becomes clinically detectable (but<br />

conversely reducing its tendency to metastasize). It is not<br />

possible to infer from these epidemiological data whether the<br />

observed relation between breast-cancer risk and OCs is due<br />

to an earlier diagnosis of breast cancer in ever-users, the<br />

biological effects of OCs or a combination of reasons.<br />

Confirmation from experimental studies is necessary.<br />

OC use and<br />

cervical cancer<br />

OC use and<br />

ovarian cancer<br />

Cervical, ovarian and endometrial cancer<br />

The relationship between cervical cancer and OC use is still<br />

inconclusive. Although a slightly elevated risk of cervical<br />

cancer has been reported with OC use (Brinton 1991;<br />

Zondervan et al 1996), it is difficult to adjust for the<br />

confounder of sexual activity, as having multiple partners is a<br />

known risk factor for cervical cancer.<br />

A study by Stanford (1991), investigating the risk of epithelial<br />

ovarian cancer with OC use, showed that in women who have<br />

ever used an oral contraceptive, the risk of ovarian cancer was<br />

reduced by 30%. In addition, five or more years of use was<br />

associated with a 50% reduction in risk. This protective effect<br />

persisted for ten years or more after beginning use of OCs.<br />

A second investigation confirmed this finding (Vessey and<br />

Painter 1995). In comparison with never-users, the relative<br />

risk of ovarian and endometrial cancer in users of OCs was<br />

0.4 (95% CI 0.2–0.8) and 0.1 (95% CI 0.0–0.7), respectively.<br />

There was also a strong negative relationship between the<br />

duration of oral contraceptive use and ovarian-cancer risk, i.e.<br />

in comparison with never-users, the relative risk in users of<br />

40


Safety aspects<br />

OCs decreased as the duration of use increased. The<br />

beneficial effects of OCs on the risk of ovarian and<br />

endometrial cancer are thought to be related to ovulation<br />

inhibition and the reduction of endometrial stimulation,<br />

respectively.<br />

A recent case-control study (Ness 2000) in 767 women aged<br />

20–69 with a diagnosis of ovarian cancer and 1,367<br />

community controls indicated that the protection afforded by<br />

oral contraceptives against epithelial ovarian cancer is<br />

independent of the dose of estrogen or<br />

progestogen. The data from this study also indicate that the<br />

reduced risk continues for 30 or more years after<br />

discontinuation of OC use.<br />

Conclusion<br />

In summary, women who are currently using combined OCs, or<br />

who have used them in the past 10 years, are at a slightly<br />

increased risk of having breast cancer diagnosed. However, the<br />

cancer diagnosed tends to be in a clinically less advanced<br />

stage and is less likely to have spread beyond the breast. In<br />

addition, use of the Pill does not increase the overall lifetime<br />

risk for breast cancer. Furthermore, the incidences of ovarian<br />

and endometrial cancer are substantially reduced by OC use.<br />

The longer OCs are used, the lower the associated risk. The<br />

relationship between cervical cancer and OC use has not yet<br />

been substantiated.<br />

41


8. Summary<br />

The most recent area of contraceptive research focuses on the<br />

development of extensions to the existing range of Pills, each<br />

with different characteristics specially tailored to a specific<br />

subgroup of women. <strong>Gracial</strong> is a Pill which is particularly<br />

suitable for women who wish to switch to a different OC<br />

because they experience irregular bleeding. <strong>Gracial</strong> is a<br />

combined oral contraceptive with a unique combiphasic<br />

regimen: a relatively estrogenic first phase of seven tablets<br />

followed by a relatively progestogenic phase during the<br />

remaining 15 days of the cycle. In <strong>Gracial</strong>, the combination of<br />

EE with the highly selective progestogen desogestrel in a<br />

22-day regimen has permitted a major reduction in the total<br />

cycle progestogen dose with a total estrogen dose comparable<br />

to that of many combined OCs.<br />

Clinical evidence confirms that:<br />

• <strong>Gracial</strong> is a very reliable oral contraceptive<br />

• <strong>Gracial</strong> provides excellent cycle control with a low level of<br />

subjective side effects<br />

• <strong>Gracial</strong> has beneficial effects on mild to moderate acne<br />

• <strong>Gracial</strong> has mainly minimal or beneficial effects on<br />

metabolic parameters.<br />

The clinical profile of <strong>Gracial</strong> makes it eminently suitable for<br />

those women who wish to switch from their first-prescribed<br />

Pill, in particular, for reasons to do with cycle control.<br />

42


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contraceptive containing desogestrel and ethinyl estradiol. Fertil Steril 1994;<br />

61: 645–51<br />

Back DJ, Grimmer SFM, Shenoy N, Orme ML’E. Plasma concentrations of<br />

3-ketodesogestrel after oral administration of desogestrel and intravenous<br />

administration of 3-ketodesogestrel. Contraception 1987; 35: 619–26<br />

Bergink EW, Hamburger AD, de Jager E, et al. Binding of a contraceptive<br />

progestogen Org 2969 and its metabolites to receptor proteins and human<br />

sex hormone-binding globulin. J Steroid Biochem 1981; 14: 175–83<br />

Bergink EW, van Meel F, Turpijn EW, et al. Binding of progestagens to receptor<br />

proteins in MCF-7 cells. J Steroid Biochem 1983; 19: 1563–70<br />

Bergink W, Assendorp R, Kloosterboer L, Van Lier W, Voortman G, Qvist I.<br />

Serum pharmacokinetics of orally administered desogestrel and binding of<br />

contraceptive progestogens to sex hormone-binding globulin. Am J Obstet<br />

Gynecol 1990; 163: 2132–7<br />

Breiner M, Romalo G, Schweikert H-U. Inhibition of androgen receptor binding<br />

by natural and synthetic steroids in cultured human genital skin fibroblasts.<br />

Klin Wochenschr 1986; 64: 732–7<br />

Brinton LA. Oral contraceptives and cervical neoplasia. Contraception 1991;<br />

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Castelli WP. Cardiovascular disease in women. Am J Obstet Gynecol 1988;<br />

158: 1553–60<br />

Collaborative Group on Hormonal Factors in Breast Cancer. Breast cancer and<br />

hormonal contraceptives: collaborative re-analysis of individual data on<br />

53,297 women with breast cancer and 100,239 women without breast<br />

cancer from 54 epidemiological studies. Lancet 1996; 347: 1713–27<br />

Cullberg G, Lindtstedt G, Lundberg G, Lundberg PA, Steffensen K. Central and<br />

peripheral effects of desogestrel 15–60 µg daily for 21 days in healthy female<br />

volunteers. Acta Obstet Gynecol Scand 1982; Suppl 111: 21–8<br />

Dicfalusy E. Mode of action of contraceptive drugs. Am J Obstet Gynecol<br />

1968; 100: 136–63<br />

Dieben TOM, Beek A van, Coelingh Bennink HJT. Multicentre study with a new<br />

biphasic oral contraceptive containing ethinylestradiol and desogestrel.<br />

Arzneimittelforschung 1991; 41: 996–8<br />

Dieben TOM, Berg MT Op ten, Coelingh Bennink HJT. Cycle control and side<br />

effects of a new combiphasic oral contraceptive regimen.<br />

Arzneimittelforschung, 1994; 44: 877–9<br />

Dieben TOM, Vromans L et al. The effects of CTR-24, a biphasic oral<br />

contraceptive combination, compared to Diane-35 in women with acne.<br />

Contraception, 1994; 50: 373–82<br />

Dunn N, White I, Freemantle S, Mann R. The role of prescribing and referral<br />

bias in studies of the association between third generation oral contraceptives<br />

and increased risk of thromboembolism. Pharmacoepidemiol Drug Saf 1998;<br />

7: 3–14<br />

Dunn et al. Oral contraceptives and myocardial infarction: results of the MICA<br />

case study. BMJ 1999; 318: 1579–83<br />

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Falsetti L. Acne treatment with a new estroprogestinic biphasic combination<br />

containing desogestrel. Acta Eur Fertil 1991; 22: 283–6<br />

Farmer RDT and Preston TD. The risk of venous thromboembolism associated<br />

with low oestrogen oral contraceptives. J Obstet Gynaecol 1995; 1: 13–20<br />

Farmer RDT. Safety of modern oral contraceptives. Results of AAH Meditel<br />

Study. Lancet 1996; 347: 259<br />

Farmer RDT, Lawrenson RA, Thompson CR, Kennedy JG, Hambleton IR.<br />

Population-based study of the risk of venous thromboembolism associated<br />

with various oral contraceptives. Lancet 1997; 349: 83–8<br />

Farmer RDT, Todd J-C, Lewis MA, MacRae KD, Williams TJ. The risk of venous<br />

thromboembolic disease amongst German women using oral contraceptives: a<br />

database study. Contraception 1998; 57: 67–70<br />

Farmer RDT, Lawrenson RA, Todd JC, Williams TJ, MacRae KD et al. A<br />

comparison of the risk of venous thromboembolic disease in association with<br />

different combined oral contraceptives. 1999, accepted for publication<br />

Gerstmann BB, Piper JM, Tomita DK, Ferguson WJ, Stadel BV et al. Oral<br />

contraceptive estrogen dose and the risk of deep venous thromboembolic<br />

disease. Am J Epidemiol 1991; 133: 32–7<br />

Geurts TBP, Goorissen EM, Sitsen JMA. Summary of drug interactions with<br />

oral contraceptives. Carnforth: Parthenon Publishing Group, 1993<br />

Godsland IF and Crook D. Pathogenesis of vascular disease in oral<br />

contraceptive users. Br J Cardiol 1996; 3: 204–8<br />

Hammond GL et al. Serum steroid binding protein concentrations, distribution<br />

of progestogens, and bioavailability of testosterone during treatment with<br />

contraceptives containing desogestrel or levon<strong>org</strong>estrel. Fertility and Sterility<br />

1984; 42: 44–51<br />

Hasenack HG, Bosch AMG, Käär K. Serum levels of 3-ketodesogestrel after<br />

oral administration of desogestrel and 3-ketodesogestrel. Contraception<br />

1986; 33: 591–6<br />

Heinemann LAJ, Lewis MA, Assmann A, Gravens L, Guggenmoos-Holzmann I.<br />

Could preferential prescribing and referral behaviour of physicians explain the<br />

elevated thrombosis risk found to be associated with third generation oral<br />

contraceptives Pharmacoepidemiol Drug Saf 1996; 5: 285–94<br />

Heinemann LAJ, Lewis MA, Thorogood M, Spitzer WO, Guggenmoos-<br />

Holzmann I, Bruppacher R. Case-control study of oral contraceptives and risk<br />

of thromboembolic stroke: results from international study on oral<br />

contraceptives and health of young women. Br Med J 1997; 315: 1502–4<br />

Herings RMC, de Boer A, Urquhart H, Leufkens HGM. Non-causal explanations for<br />

the increased risk of venous thromboembolism among users of third generation<br />

oral contraceptives [abstract]. Pharmacoepidemiol Drug Saf 1996; 5: S88<br />

Hoppen HO, Hammann P. The influence of structural modification on<br />

progesterone and androgen binding of norethisterone. Correlation of nuclear<br />

magnetic resonance signal. Acta Endocrinol 1987; 115: 406–12<br />

Jamin C and de Mouzon J. Selective prescribing of third generation oral<br />

contraceptives (OCs). Contraception 1996; 54: 55–6<br />

Jick H, Jick SS, Gurewich V, Myers MW, Vasilakis C. Risk of idiopathic<br />

cardiovascular death and non-fatal venous thromboembolism in women using<br />

oral contraceptives with differing progestogen components. Lancet 1995;<br />

346: 1589–93<br />

44


References<br />

Jick H, Jick SS, Myers MW. Risk of acute myocardial infarction and low-dose<br />

combined oral contraceptives (letter). Br Med J 1996; 347: 627–8<br />

Juchem M, Pollow K. Binding of oral contraceptive progestogens to serum<br />

proteins and cytoplasmic receptor. Am J Obstet Gynecol 1990; 163: 2171–83<br />

Jung-Hoffmann C, Storch A, Kuhl H. Serum concentrations of ethinylestradiol,<br />

3-keto-desogestrel, SHBG, CBG and gonadotropins during treatment with a<br />

biphasic oral contraceptive containing desogestrel. Horm Res 1992; 38: 184–9<br />

Kloosterboer HJ, van Wayjen RGA, van den Ende A. Effects of three low-dose<br />

oral contraceptives on sex hormone binding globulin, corticosteroid binding<br />

globulin and antithrombin III activity in healthy women. Acta Obstet Gynecol<br />

Scand 1987;Suppl 144:41–4<br />

Kloosterboer HJ, Vonk-Noordegraaf CA, Turpijn EW. Selectivity of<br />

progesterone and androgen receptor binding of progestagens used in oral<br />

contraceptives. Contraception 1988; 38: 325–32<br />

Kuhl H. Pharmacokinetics of oestrogens and progestogens. Maturitas 1990;<br />

2: 171–197<br />

Kuhl W, März W, Jung-Hoffmann C, Weber J, Siekmeier R, Gross W. Effect on<br />

lipid metabolism of a biphasic desogestrel-containing oral contraceptive:<br />

divergent changes in apolipoprotein B and E and transitory decrease in Lp(a)<br />

levels. Contraception 1993; 47: 69–83<br />

Kuhl H, Jung-Hoffmann C, Weber J, Boehm BO. The effects of a biphasic<br />

desogestrel-containing oral contraceptive on carbohydrate metabolism and<br />

various hormonal parameters. Contraception 1993; 47: 55–68<br />

Lewis MA, Heinemann LAJ, MacRae KD, Bruppacher R, Spitzer WO. The<br />

increased risk of venous thromboembolism and the use of third generation<br />

progestagens: role of bias in observational research. Contraception 1996; 54:<br />

5–13<br />

Lewis MA, Heinemann LAJ, Spitzer WO, MacRae KD, Bruppacher R. The use<br />

of oral contraceptives and the concurrence of acute myocardial infarction in<br />

young women: results from the Transnational study on oral contraceptives and<br />

the health of young women. Contraception 1997; 56: 129–40<br />

Lewis MA, MacRae KD, Kühl-Habich D, Bruppacher R, Heinemann LAJ et al.<br />

The differential risk of oral contraceptives: the impact of full exposure history.<br />

Hum Reprod 1999; 14: 1493–9<br />

Lidegaard Ø and Edström B. Oral contraceptives and acute myocardial<br />

infarction: a case-control study (abstract). Eur J Contracept Reprod Health<br />

Care 1996; 1: 74<br />

Lidegaard Ø. The influence of thrombotic risk factors when oral contraceptives<br />

are prescribed. A control-only study. Acta Obstet Gynecol Scand 1997; 76:<br />

252–60<br />

Lidegaard Ø, Edström B and Kreiner S. Oral contraceptives and venous<br />

thromboembolism. A case-control study. Contraception 1998; 57: 291–301<br />

Lidegaard Ø and Kreiner S. Cerebral thrombosis and oral contraceptives. A<br />

case-control study. Contraception 1998; 57: 303–14<br />

Lis Y, Spitzer WO, Mann RD, Cockburn I, Chukwujindu J, Throrogood M et al.<br />

A concurrent cohort study of oral contraceptive use and cardiovascular risks.<br />

Pharmacoepidemiol Drug Saf 1993; 2: 51–63<br />

45


References<br />

Lunsen HW van. Recent oral contraceptive use patterns in four European<br />

countries: evidence for selective prescribing of oral contraceptives containing<br />

third generation progestogens. Eur J Contracept Reprod Health Care 1996; 1:<br />

39–45<br />

Madden S, Back DJ, Martin CA, Orme ML’E. Metabolism of the contraceptive<br />

steroid desogestrel by the intestinal mucosa. Br J Clin Pharmacol 1989; 27:<br />

295–9<br />

Madden S, Back DJ, Orme ML’E. Metabolism of the contraceptive steroid<br />

desogestrel by human liver in vitro. J Steroid Biochem 1990; 35: 281–8<br />

Melief R. Comparative study of the effect on acne of a new desogestrelcontaining<br />

combiphasic oral contraceptive with one containing cyproterone<br />

acetate. Eur J Contracept Reprod Health Care 2000; 5 (Suppl 1): 71, 1–31<br />

(Poster presented at ESC congress, Ljubljana, 2000)<br />

Ness et al. Risk of ovarian cancer in relation to estrogen and progestin dose<br />

and the characteristics of oral contraceptives. Am J Epidemiol 2000; 152(3):<br />

233–41<br />

Newton JR. Classification and comparison of oral contraceptives containing<br />

new generation progestogens. Hum Reprod Update 1995; 1(3): 231–63<br />

Oddens BJ, Arnolds HT, Maris MGM van, Lunsen HW van. The dynamics of oral<br />

contraceptive use: starting, discontinuation and switching in the Netherlands<br />

1990–93. Accepted for publication in Advances in Contraception, 1994<br />

Organon Scientific Development Group. Data on file, 1980<br />

Poulter NR, Farley TMM, Chang CL, Marmot MG, Meirik O. Author’s reply<br />

(Letter). Lancet 1996; 347: 547<br />

Purba HS, Maggs JL, Orme ML’E, Back DJ, Park BK. The metabolism of 17<br />

alpha-ethinylestradiol by human liver microsomes: formation of catechol and<br />

chemically reactive metabolites. Br J Clin Pharmacol 1987; 23: 447–53<br />

Royal College of General Practitioners. Oral contraceptives and health. New<br />

York: Pitman Publishing Co, 1974<br />

Royal College of General Practitioners Oral Contraceptive Study. Oral<br />

contraceptives, venous thrombosis and varicose veins. Journal of the Royal<br />

College of General Practitioners 1978; 28: 393–9<br />

Sartwell PE, Masi AT, Arthes FG, Greene GR, Smith HE. Thromboembolism and<br />

oral contraceptives: and epidemiological case-control study. Am J Epidemiol<br />

1969; 90: 365–70<br />

Skouby SO. The influence on pituitary ovarian function, cervical mucus and<br />

vaginal cytology of a new progestational compound. Contraception 1976; 14:<br />

529–39<br />

Speck U, Wendt H, Schulze PE, Jentsch D. Bioavailability and<br />

pharmacokinetics of cyproterone acetate 14C and ethinylestradiol 3H after<br />

oral administration as a coated tablet. Contraception 1976; 14: 151–63<br />

Spitzer WO, Lewis MA, Heinemann LAJ, Thorogood M, MacRae KD. Third<br />

generation oral contraceptives and risk of venous thromboembolic disorders:<br />

an international case-control study. BMJ 1996; 312: 83–8<br />

Stanford JL. Oral contraceptives and neoplasia of the ovaries. Contraception<br />

1991; 43: 543–56<br />

Suissa S, Blais L, Spitzer WO, Cusson J, Lewis M, Heinemann L. First-time use<br />

of newer oral contraceptives and the risk of venous thromboembolism.<br />

Contraception 1997; 56: 141–6<br />

46


References<br />

Suissa et al. Recurrent use of newer oral contraceptives and the risk of venous<br />

thromboembolism. Hum Reprod 2000; 15: 817–21<br />

Timmer CJ, Apter D, Voortman G. Pharmacokinetics of 3-ketodesogestrel and<br />

ethinylestradiol released from different types of contraceptive vaginal rings.<br />

Contraception 1990; 42: 629–42<br />

Van Enk et al, manuscript in preparation, NV Organon, Oss<br />

Vange N van der. Ovarian activity during low dose oral contraceptives. In:<br />

Vange N van der, Chamberlain, eds. Contemporary Obstetrics and<br />

Gynaecology. Butterworths, Kent, England, 1988: 315–26<br />

Vessey MP et al. Mortality among women participating in the Oxford/Family<br />

Planning Association contraception study. Lancet 1977; ii: 731<br />

Vessey MP. Epidemiological studies of lower dose oral contraceptives.<br />

Presented at the XII World Congress of Gynecology and Obstetrics. Rio de<br />

Janeiro, October 26, 1988<br />

Vessey MP and Painter R. Endometrial and ovarian cancer and oral<br />

contraceptives–findings in a large cohort study. Br J Cancer 1995; 71: 1340–2<br />

Viinikka L, Ylikorkola O, Vihko R, Hasenacj HG. Metabolism of a new synthetic<br />

progestogen, <strong>org</strong> 2969, in female volunteers. The distribution and excretion of<br />

radioactivity after an oral dose of the labelled drug. Acta Endocrinol 1980;<br />

93: 374–9<br />

Volpe A, Silferi M, Mauri A, Deiana P, Angioni S, Grasso A et al Efficacy on<br />

hyperandrogenism and safety of a new oral contraceptive biphasic<br />

formulation containing desogestrel. Eur J Obstet Gynecol Reprod Biol, 1994;<br />

53: 205–9<br />

Vree M. Observational clinical evaluation of a desogestrel-containing<br />

combiphasic oral contraceptive in Germany. Eur J Contracept Reprod Health<br />

Care 2000; 5 (suppl 1): 71, 1–31<br />

World Health Organization Collaborative Study of Cardiovascular Disease and<br />

Steroid Hormone Contraception. Effect of different progestogens in low<br />

oestrogen oral contraceptives on venous thromboembolic disease. Lancet<br />

1995; 346: 1582–8<br />

World Health Organization Collaborative Study of Cardiovascular Disease and<br />

Steroid Hormone Contraception. Ischaemic stroke and combined oral<br />

contraceptives: results of an international, multicentre, case-controlled study.<br />

Lancet 1996; 348: 505–10<br />

World Health Organization Collaborative Study of Cardiovascular Disease and<br />

Steroid Hormone Contraception. Acute myocardial infarction and combined<br />

oral contraceptives: results of an international, multicentre, case-control study.<br />

Lancet 1997; 349; 1202–9<br />

Zondervan KT, Carpenter LM, Painter R and Vessey MP. Oral contraceptives<br />

and cervical cancer - further findings from the Oxford Family Planning<br />

Association Contraceptive Study. Br J Cancer 1996; 73: 1291–7<br />

47


10. Summary of product characteristics<br />

1. NAME OF THE MEDICINAL<br />

PRODUCT<br />

<strong>Gracial</strong>®.<br />

2. QUALITATIVE AND QUANTITATIVE<br />

COMPOSITION<br />

<strong>Gracial</strong>® is a combiphasic oral contraceptive of<br />

which:<br />

• each blue tablet contains 25 mcg desogestrel<br />

(DSG) and 40 mcg ethinylestradiol (EE).<br />

• each white tablet contains 125 mcg DSG and<br />

30 mcg EE.<br />

3. PHARMACEUTICAL FORM<br />

Tablets for oral use.<br />

4. CLINICAL PARTICULARS<br />

4.1 Therapeutic Indications<br />

Contraception.<br />

4.2 Posology and method of<br />

administration<br />

4.2.1 How to take <strong>Gracial</strong>®<br />

Tablets must be taken in the order directed on the<br />

package every day at about the same time with<br />

some liquid as needed. One tablet is to be taken<br />

daily for 22 consecutive days. Each subsequent<br />

pack is started after a 6-day tablet-free interval,<br />

during which time a withdrawal bleed usually<br />

occurs. This usually starts on day 2–3 after the<br />

last tablet and may not have finished before the<br />

next pack is started.<br />

4.2.2 How to start <strong>Gracial</strong>®<br />

No preceding hormonal contraceptive use [in the<br />

past month]<br />

Tablet-taking has to start on day 1 of the woman’s<br />

natural cycle (i.e. the first day of her menstrual<br />

bleeding). Starting on days 2–5 is allowed, but<br />

during the first cycle a barrier method is<br />

recommended in addition for the first 7 days of<br />

tablet-taking.<br />

Changing from another combined oral<br />

contraceptive (COC)<br />

The woman should start with <strong>Gracial</strong>® preferably<br />

on the day after the last active tablet of her<br />

previous COC, but at the latest on the day<br />

following the usual tablet-free or placebo tablet<br />

interval of her previous COC.<br />

Changing from a progestagen-only method<br />

(minipill, injection, implant)<br />

The woman may switch any day from the minipill<br />

(from an implant on the day of its removal, from<br />

an injectable when the next injection would be<br />

due), but should in all of these cases be advised to<br />

additionally use a barrier method for the first<br />

7 days of tablet-taking.<br />

Following first-trimester abortion<br />

The woman may start immediately. When doing<br />

so, she need not take additional contraceptive<br />

measures.<br />

Following delivery or second-trimester abortion<br />

For breast-feeding women see Section 4.6<br />

Women should be advised to start at day 21 to 28<br />

after delivery or second-trimester abortion. When<br />

starting later, the woman should be advised to<br />

additionally use a barrier method for the first 7<br />

days of tablet-taking. However, if intercourse has<br />

already occurred, pregnancy should be excluded<br />

before the actual start of COC use or the woman<br />

has to wait for her first menstrual period.<br />

4.2.3 Management of missed tablets<br />

If the user is less than 12 hours late in taking any<br />

tablet, contraceptive protection is not reduced.<br />

The woman should take the tablet as soon as she<br />

remembers and should take further tablets at the<br />

usual time.<br />

If she is more than 12 hours late in taking any<br />

tablet, contraceptive protection may be reduced.<br />

The management of missed tablets can be guided<br />

by the following two basic rules:<br />

1. tablet-taking must never be discontinued for<br />

longer than 6 days.<br />

2. 7 days of uninterrupted tablet-taking are<br />

required to attain adequate suppression of the<br />

hypothalamic-pituitary-ovarian-axis.<br />

Accordingly, the following advice can be given in<br />

daily practice:<br />

• Week 1<br />

The user should take the last missed tablet as<br />

soon as she remembers, even if this means<br />

taking two tablets at the same time. She then<br />

continues to take tablets at her usual time. In<br />

addition, a barrier method such as a condom<br />

should be used for the next 7 days. If<br />

intercourse took place in the preceding 7 days,<br />

the possibility of a pregnancy should be<br />

considered. The more tablets are missed and<br />

the closer they are to the regular tablet-free<br />

interval, the higher the risk of a pregnancy.<br />

48


Summary of product characteristics<br />

• Week 2<br />

The user should take the last missed tablet as<br />

soon as she remembers, even if this means<br />

taking two tablets at the same time. She then<br />

continues to take tablets at her usual time.<br />

Provided that the woman has taken her tablets<br />

correctly in the 7 days preceding the first<br />

missed tablet, there is no need to use extra<br />

contraceptive precautions. However, if this is not<br />

the case, or if she missed more than 1 tablet,<br />

the woman should be advised to use extra<br />

precautions for 7 days.<br />

• Week 3<br />

The risk of reduced reliability is imminent<br />

because of the forthcoming tablet-free interval.<br />

However, by adjusting the tablet-intake<br />

schedule, reduced contraceptive protection can<br />

still be prevented. By adhering to either of the<br />

following two options, there is therefore no need<br />

to use extra contraceptive precautions, provided<br />

that in the 7 days preceding the first missed<br />

tablet the woman has taken all tablets correctly.<br />

If this is not the case, the woman should be<br />

advised to follow the first of these two options<br />

and to use extra precautions for the next 7 days<br />

as well.<br />

1. The user should take the last missed tablet as<br />

soon as she remembers, even if this means<br />

taking two tablets at the same time. She then<br />

continues to take tablets at her usual time.<br />

The next pack must be started as soon as the<br />

current pack is finished, i.e., no gap should be<br />

left between packs. The user is unlikely to<br />

have a withdrawal bleed until the end of the<br />

second pack, but she may experience<br />

spotting or breakthrough bleeding on tablettaking<br />

days.<br />

2. The woman may also be advised to<br />

discontinue tablet-taking from the current<br />

pack. She should then have a tablet-free<br />

interval of up to 6 days, including the days<br />

she missed tablets, and subsequently<br />

continue with the next pack.<br />

If the woman missed tablets and subsequently has<br />

no withdrawal bleed in the first normal tablet-free<br />

interval, the possibility of a pregnancy should be<br />

considered.<br />

4.2.4 Advice in case of vomiting<br />

If vomiting occurs within 3–4 hours after tablettaking,<br />

absorption may not be complete. In such<br />

an event, the advice concerning missed tablets, as<br />

given in Section 4.2.3, is applicable. If the woman<br />

does not want to change her normal tablet-taking<br />

schedule, she has to take the extra tablet(s)<br />

needed from another pack.<br />

4.2.5 How to shift periods or how to delay a<br />

period<br />

To delay a period, the woman should continue with<br />

the white tablets in another pack of <strong>Gracial</strong>®<br />

without a tablet-free interval. The extension can be<br />

carried on for as long as wished until the end of<br />

the second pack (maximally 15 days). During the<br />

extension the woman may experience<br />

breakthrough bleeding or spotting. Regular intake<br />

of <strong>Gracial</strong>® is then resumed after the usual 6-day<br />

tablet-free interval.<br />

To shift her period to another day of the week than<br />

the woman is used to with her current scheme, she<br />

can be advised to shorten her forthcoming tabletfree<br />

interval by as many days as she likes. The<br />

shorter the interval, the higher the risk that she<br />

does not have a withdrawal bleed and will<br />

experience breakthrough bleeding and spotting<br />

during the second pack (just as when delaying a<br />

period).<br />

4.3 Contraindications<br />

Combined oral contraceptives (COCs) should not<br />

be used in the presence of any of the conditions<br />

listed below. Should any of the conditions appear<br />

for the first time during COC use, the product<br />

should be stopped immediately.<br />

• Thrombosis (venous or arterial) present or in<br />

history (e.g. deep venous thrombosis, pulmonary<br />

embolism, myocardial infarction,<br />

cerebrovascular accident).<br />

• Presence or history of prodromi of a thrombosis<br />

(e.g. transient ischemic attack, angina pectoris).<br />

• Diabetes mellitus with vascular involvement.<br />

• The presence of a severe or multiple risk<br />

factor(s) for venous or arterial thrombosis may<br />

also constitute a contraindication (see under<br />

‘Special Warnings and Special Precautions for<br />

Use’).<br />

• Presence or history of severe hepatic disease as<br />

long as liver function values have not returned to<br />

normal.<br />

• Known or suspected malignant conditions of the<br />

genital <strong>org</strong>ans or the breasts, if sex steroid<br />

influenced.<br />

• Presence or history of liver tumors (benign or<br />

malignant).<br />

• Undiagnosed vaginal bleeding.<br />

• Known or suspected pregnancy.<br />

• Hypersensitivity to any of the components of<br />

<strong>Gracial</strong>®.<br />

49


Summary of product characteristics<br />

4.4 Special warnings and special<br />

precautions for use<br />

4.4.1. Warnings<br />

If any of the conditions/risk factors mentioned<br />

below is present, the benefits of COC use should<br />

be weighed against the possible risks for each<br />

individual case and discussed with the woman<br />

before she decides to start using it. In the event of<br />

aggravation, exacerbation or first appearance of<br />

any of these conditions or risk factors, the woman<br />

should contact her physician. The physician should<br />

then decide on whether its use should be<br />

discontinued.<br />

1. Circulatory Disorders<br />

• Epidemiological studies have suggested an<br />

association between the use of COCs and an<br />

increased risk of arterial and venous thrombotic<br />

and thromboembolic diseases such as<br />

myocardial infarction, stroke, deep venous<br />

thrombosis, and pulmonary embolism. These<br />

events occur rarely.<br />

• Venous thromboembolism (VTE), manifesting as<br />

deep venous thrombosis and/or pulmonary<br />

embolism, may occur during the use of all COCs.<br />

The approximate incidence of VTE in users of<br />

low-estrogen-dose (< 50 mcg EE) OCs is up to 4<br />

per 10 000 woman years compared to 0.5–3<br />

per 10 000 woman years in non-OC users.<br />

However, the incidence of VTE occurring during<br />

COC use is substantially less than the incidence<br />

associated with pregnancy (i.e. 6 per 10,000<br />

pregnant woman years).<br />

• Extremely rarely, thrombosis has been reported<br />

to occur in other blood vessels, e.g. hepatic,<br />

mesenteric, renal or retinal veins and arteries, in<br />

COC users. There is no consensus as to whether<br />

the occurrence of these events is associated<br />

with the use of COCs.<br />

• Symptoms of venous or arterial thrombosis can<br />

include: unilateral leg pain and/or swelling;<br />

sudden severe pain in the chest, whether or not<br />

it radiates to the left arm; sudden<br />

breathlessness; sudden onset of coughing; any<br />

unusual, severe, prolonged headache; sudden<br />

partial or complete loss of vision; diplopia;<br />

slurred speech or aphasia; vertigo; collapse with<br />

or without focal seizure; weakness or very<br />

marked numbness suddenly affecting one side<br />

or one part of the body; motor disturbances;<br />

‘acute’ abdomen.<br />

• The risk of thromboembolism (venous and/or<br />

arterial) increases with:<br />

• age;<br />

• smoking (with heavier smoking and increasing<br />

age the risk further increases, especially in<br />

women over 35 years of age);<br />

• a positive family history (i.e. venous or arterial<br />

thromboembolism ever in a sibling or parent<br />

at a relatively early age). If a hereditary<br />

predisposition is suspected, the woman<br />

should be referred to a specialist for advice<br />

before deciding about any COC use;<br />

• obesity (body mass index over 30 kg/m 2 );<br />

• dyslipoproteinemia;<br />

• hypertension;<br />

• valvular heart disease;<br />

• atrial fibrillation;<br />

• prolonged immobilization, major surgery, any<br />

surgery to the legs, or major trauma. In these<br />

situations it is advisable to discontinue COC<br />

use (in the case of elective surgery at least<br />

four weeks in advance) and not to resume<br />

until two weeks after complete remobilization.<br />

• There is no consensus about the possible role of<br />

varicose veins and superficial thrombophlebitis<br />

in venous thromboembolism.<br />

• The increased risk of thromboembolism in the<br />

puerperium must be considered (for information<br />

on “Pregnancy and Lactation” see Section 4.6).<br />

• Other medical conditions which have been<br />

associated with adverse circulatory events<br />

include diabetes mellitus, systemic lupus<br />

erythematosus, hemolytic uremic syndrome and<br />

chronic inflammatory bowel disease (Crohn's<br />

disease or ulcerative colitis) and sickle cell<br />

disease.<br />

• An increase in frequency or severity of migraine<br />

during COC use (which may be prodromal of a<br />

cerebrovascular event) may be a reason for<br />

immediate discontinuation of the COC.<br />

• Biochemical factors that may be indicative of<br />

hereditary or acquired predisposition for venous<br />

or arterial thrombosis include Activated Protein<br />

C (APC) resistance, hyperhomocysteinemia,<br />

antithrombin-III deficiency, protein C deficiency,<br />

protein S deficiency, antiphospholipid antibodies<br />

(anticardiolipin antibodies, lupus anticoagulant).<br />

• When considering risk/benefit, the physician<br />

should take into account that adequate<br />

treatment of a condition may reduce the<br />

associated risk of thrombosis and that the risk<br />

associated with pregnancy is higher than that<br />

associated with COC use.<br />

50


Summary of product characteristics<br />

2. Tumors<br />

• An increased risk of cervical cancer in long-term<br />

users of COCs has been reported in some<br />

epidemiological studies, but there continues to<br />

be controversy about the extent to which this<br />

finding is attributable to the confounding effects<br />

of sexual behavior and other factors such as<br />

human papilloma virus (HPV).<br />

• A meta-analysis from 54 epidemiological studies<br />

reported that there is a slightly increased<br />

relative risk (RR = 1.24) of having breast cancer<br />

diagnosed in women who are currently using<br />

COCs. The increased risk gradually disappears<br />

during the course of the 10 years after cessation<br />

of COC use. Because breast cancer is rare in<br />

women under 40 years of age, the excess<br />

number of breast cancer diagnoses in current<br />

and recent COC users is small in relation to the<br />

lifetime risk of breast cancer. These studies do<br />

not provide evidence for causation. The<br />

observed pattern of increased risk may be due<br />

to an earlier diagnosis of breast cancer in COC<br />

users, the biological effects of COCs or a<br />

combination of both. The breast cancers<br />

diagnosed in ever-users tend to be less<br />

advanced clinically than the cancers diagnosed<br />

in never-users.<br />

• In rare cases, benign liver tumors, and even<br />

more rarely, malignant liver tumors have been<br />

reported in users of COCs. In isolated cases,<br />

these tumors have led to life-threatening intraabdominal<br />

hemorrhages. A hepatic tumor<br />

should be considered in the differential<br />

diagnosis when severe upper abdominal pain,<br />

liver enlargement or signs of intra-abdominal<br />

hemorrhage occur in women taking COCs.<br />

3. Other conditions<br />

• Women with hypertriglyceridemia, or a family<br />

history thereof, may be at an increased risk of<br />

pancreatitis when using COCs.<br />

• Although small increases in blood pressure have<br />

been reported in many women taking COCs,<br />

clinically relevant increases are rare. A<br />

relationship between COC use and clinical<br />

hypertension has not been established.<br />

However, if a sustained clinically significant<br />

hypertension develops during the use of a COC<br />

then it is prudent for the physician to withdraw<br />

the COC and treat the hypertension. Where<br />

considered appropriate, COC use may be<br />

resumed if normotensive values can be achieved<br />

with antihypertensive therapy.<br />

• The following conditions have been reported to<br />

occur or deteriorate with both pregnancy and<br />

COC use, but the evidence of an association<br />

with COC use is inconclusive: jaundice and/or<br />

pruritus related to cholestasis; gallstone<br />

formation; porphyria; systemic lupus<br />

erythematosus; hemolytic uremic syndrome;<br />

Sydenham’s chorea; herpes gestationis;<br />

otosclerosis-related hearing loss.<br />

• Acute or chronic disturbances of liver function<br />

may necessitate the discontinuation of COC use<br />

until markers of liver function return to normal.<br />

Recurrence of cholestatic jaundice which<br />

occurred first during pregnancy or previous use<br />

of sex steroids necessitates the discontinuation<br />

of COCs.<br />

• Although COCs may have an effect on peripheral<br />

insulin resistance and glucose tolerance, there is<br />

no evidence for a need to alter the therapeutic<br />

regimen in diabetics using COCs. However,<br />

diabetic women should be carefully observed<br />

while taking COCs.<br />

• Crohn’ s disease and ulcerative colitis have been<br />

associated with COC use.<br />

• Chloasma may occasionally occur, especially in<br />

women with a history of chloasma gravidarum.<br />

Women with a tendency to chloasma should<br />

avoid exposure to the sun or ultraviolet radiation<br />

while taking COCs.<br />

4.4.2. Medical examination/consultation<br />

A complete medical history and physical<br />

examination should be taken prior to the initiation<br />

or reinstitution of COC use, guided by the<br />

contraindications (Section 4.3) and warnings<br />

(Section 4.4.1), and should be repeated at least<br />

annually during the use of COCs. Periodic medical<br />

assessment is also of importance because<br />

contraindications (e.g. a transient ischemic attack,<br />

etc.) or risk factors (e.g. a family history of venous<br />

or arterial thrombosis) may appear for the first<br />

time during the use of a COC. The frequency and<br />

nature of these assessments should be adapted to<br />

the individual woman but should generally include<br />

special reference to blood pressure, breasts,<br />

abdomen and pelvic <strong>org</strong>ans, including cervical<br />

cytology, and relevant laboratory tests.<br />

Women should be advised that oral contraceptives<br />

do not protect against HIV infections (AIDS) and<br />

other sexually transmissible diseases.<br />

4.4.3 Reduced efficacy<br />

The efficacy of COCs may be reduced in the event<br />

of missed tablets (Section 4.2.3), vomiting (Section<br />

4.2.4) or concomitant medication (Section 4.5.1).<br />

51


Summary of product characteristics<br />

4.4.4 Reduced cycle control<br />

With all COCs, irregular bleeding (spotting or<br />

breakthrough bleeding) may occur, especially<br />

during the first months of use. Therefore, the<br />

evaluation of any irregular bleeding is only<br />

meaningful after an adaptation interval of about<br />

three cycles.<br />

If bleeding irregularities persist or occur after<br />

previously regular cycles, then non-hormonal<br />

causes should be considered and adequate<br />

diagnostic measures are indicated to exclude<br />

malignancy or pregnancy. These may include<br />

curettage.<br />

In some women, withdrawal bleeding may not<br />

occur during the tablet-free interval. If the COC has<br />

been taken according to the directions described<br />

in Section 4.2, it is unlikely that the woman is<br />

pregnant. However, if the COC has not been taken<br />

according to these directions prior to the first<br />

missed withdrawal bleed or if two withdrawal<br />

bleeds are missed, pregnancy must be ruled out<br />

before COC use is continued.<br />

4.5 Interaction with other medicinal<br />

products and other forms of interaction<br />

4.5.1 Interactions<br />

Drug interactions which result in an increased<br />

clearance of sex hormones can lead to<br />

breakthrough bleeding and oral contraceptive<br />

failure. This has been established with hydantoins,<br />

barbiturates, primidone, carbamazepine and<br />

rifampicin; oxcarbazepine, topiramate and<br />

griseofulvin are also suspected. The mechanism of<br />

this interaction appears to be based on the<br />

hepatic enzyme-inducing properties of these drugs.<br />

Maximal enzyme induction is generally not seen<br />

for 2–3 weeks but may then be sustained for at<br />

least 4 weeks after the cessation of drug therapy.<br />

Contraceptive failures have also been reported<br />

with antibiotics, such as ampicillins and<br />

tetracyclines. The mechanism of this effect has not<br />

been elucidated.<br />

Women on short-term treatment with any of the<br />

above-mentioned classes of drugs or individual<br />

drugs should temporarily use a barrier method in<br />

addition to the COC, i.e. during the time of<br />

concomitant drug administration and for 7 days<br />

after their discontinuation. For women on<br />

rifampicin a barrier method should be used in<br />

addition to the COC during the time of rifampicin<br />

administration and for 28 days after its<br />

discontinuation. If concomitant drug administration<br />

runs beyond the end of the tablets in the COC<br />

pack, the next COC pack should be started<br />

without the usual tablet-free interval.<br />

In women on long-term treatment with hepatic<br />

enzyme-inducing drugs, experts have<br />

recommended to increase the contraceptive<br />

steroid doses. If a high contraceptive dosage is not<br />

desirable or appears to be unsatisfactory or<br />

unreliable, e.g. in the case of irregular bleeding,<br />

another method of contraception should be<br />

advised.<br />

4.5.2 Laboratory tests<br />

The use of contraceptive steroids may influence<br />

the results of certain laboratory tests, including<br />

biochemical parameters of liver, thyroid, adrenal<br />

and renal function, plasma levels of (carrier)<br />

proteins, e.g. corticosteroid binding globulin and<br />

lipid/lipoprotein fractions, parameters of<br />

carbohydrate metabolism and parameters of<br />

coagulation and fibrinolysis. Changes generally<br />

remain within the normal laboratory range.<br />

4.6 Use during pregnancy and lactation<br />

Extensive epidemiological studies have revealed<br />

neither an increased risk of birth defects in<br />

children born to women who used COCs prior to<br />

pregnancy, nor a teratogenic effect when COCs<br />

were taken inadvertently during early pregnancy.<br />

See also Contraindications.<br />

Lactation may be influenced by COCs as they may<br />

reduce the quantity and change the composition<br />

of breast milk, therefore, the use of COCs should<br />

generally not be recommended until the nursing<br />

mother has completely weaned her child. Small<br />

amounts of the contraceptive steroids and/or their<br />

metabolites may be excreted with the milk but<br />

there is no evidence that this adversely affects<br />

infant health.<br />

4.7 Effects on ability to drive and use<br />

machines<br />

No observed effects.<br />

4.8 Undesirable effects<br />

4.8.1 Serious undesirable effects<br />

See Section 4.4.1.<br />

4.8.2 Other possible undesirable effects<br />

The following undesirable effects have been<br />

reported in users of COCs and the association has<br />

been neither confirmed nor refuted:<br />

Breast tenderness, pain, secretion; headache;<br />

migraine; changes in libido; depressive moods;<br />

contact lens intolerance; nausea; vomiting;<br />

changes in vaginal secretion; various skin<br />

disorders; fluid retention; change in body weight;<br />

hypersensitivity reaction.<br />

52


Summary of product characteristics<br />

4.9 Overdose<br />

There have been no reports of serious deleterious<br />

effects from overdose. Symptoms that may occur<br />

in this case are: nausea, vomiting and, in young<br />

girls, slight vaginal bleeding. There are no<br />

antidotes and further treatment should be<br />

symptomatic.<br />

5. PHARMACOLOGICAL PROPERTIES<br />

5.1 Pharmacodynamic properties<br />

<strong>Gracial</strong>® is a combiphasic OC containing DSG as<br />

the progestagen component. The combiphasic<br />

concept stands for a low and stepwise increased<br />

progestagen dosage while at the same time the<br />

estrogen dose is reduced. With this concept, cycle<br />

control can be improved as compared to<br />

monophasic OCs while maintaining their high<br />

contraceptive efficacy. The contraceptive effect of<br />

COCs is based on the interaction of various factors,<br />

the most important of which are seen as the<br />

inhibition of ovulation and the changes in the<br />

cervical secretion. As well as protection against<br />

pregnancy, COCs have several positive properties<br />

which, next to the negative properties (see<br />

Warnings, Undesirable effects), can be useful when<br />

deciding on a method of birth control. The cycle is<br />

more regular and the menstruation is often less<br />

painful and bleeding is lighter. The latter may<br />

result in a decrease in the occurrence of iron<br />

deficiency. Apart from this, with the higher-dosed<br />

COCs (50 mg ethinylestradiol), there is evidence of<br />

a reduced risk of fibrocystic tumours of the<br />

breasts, ovarian cysts, pelvic inflammatory disease,<br />

ectopic pregnancy and endometrial and ovarian<br />

cancer. Whether this also applies to lower-dosed<br />

COCs remains to be confirmed.<br />

5.2 Pharmacokinetic properties<br />

Desogestrel<br />

ABSORPTION<br />

Orally administered desogestrel is rapidly and<br />

completely absorbed and converted to<br />

etonogestrel. Peak serum concentrations of<br />

approximately 0.3 (day 7) to 1.6 ng/ml (day 22)<br />

are reached at about 1.5 hours after ingestion.<br />

Bioavailability is 62–81%.<br />

DISTRIBUTION<br />

Etonogestrel is bound to serum albumin and to sex<br />

hormone binding globulin (SHBG). Only 2–4% of<br />

the total serum drug concentrations are present as<br />

free steroid, 40–70% are specifically bound to<br />

SHBG. The ethinylestradiol-induced increase in<br />

SHBG influences the distribution over the serum<br />

proteins, causing an increase in the SHBG-bound<br />

fraction and a decrease in the albumin-bound<br />

fraction. The apparent volume of distribution of<br />

desogestrel is 1.5 l/kg.<br />

METABOLISM<br />

Etonogestrel is completely metabolized by the<br />

known pathways of steroid metabolism. The<br />

metabolic clearance rate from serum is about<br />

2 ml/min/kg. No interaction was found with the<br />

co-administered ethinylestradiol.<br />

ELIMINATION<br />

Etonogestrel serum levels decrease in two phases.<br />

The terminal disposition phase is characterized by<br />

a half-life of approximately 30 hours. Desogestrel<br />

and its metabolites are excreted at a urinary to<br />

biliary ratio of about 6:4.<br />

STEADY-STATE CONDITIONS<br />

Etonogestrel pharmacokinetics are influenced by<br />

SHBG levels, which are increased threefold by<br />

ethinylestradiol. Following daily ingestion, drug<br />

serum levels increase about two- to three-fold,<br />

reaching steady-state conditions during the second<br />

half of the treatment cycle.<br />

Ethinylestradiol<br />

ABSORPTION<br />

Orally administered ethinylestradiol is rapidly and<br />

completely absorbed. Peak serum concentrations<br />

of about 80–100 pg/ml are reached within 1–2<br />

hours. Absolute bioavailability as a result of<br />

presystemic conjugation and first-pass metabolism<br />

is approximately 60%.<br />

DISTRIBUTION<br />

Ethinylestradiol is highly but non-specifically<br />

bound to serum albumin (approximately 98.5%)<br />

and induces an increase in the serum<br />

concentrations of SHBG. An apparent volume of<br />

distribution of about 5 l/kg was determined.<br />

METABOLISM<br />

Ethinylestradiol is subject to presystemic<br />

conjugation in both small bowel mucosa and the<br />

liver. Ethinylestradiol is primarily metabolized by<br />

aromatic hydroxylation but a wide variety of<br />

hydroxylated and methylated metabolites are<br />

formed, and these are present as free metabolites<br />

and as conjugates with glucuronides and sulfate.<br />

The metabolic clearance rate is about 5 ml/min/kg.<br />

53


Summary of product characteristics<br />

ELIMINATION<br />

Ethinylestradiol serum levels decrease in two<br />

phases, the terminal disposition phase is<br />

characterized by a half-life of approximately<br />

24 hours. Unchanged drug is not excreted,<br />

ethinylestradiol metabolites are excreted at a<br />

urinary to biliary ratio of 4:6. The half-life of<br />

metabolite excretion is about 1 day.<br />

STEADY-STATE CONDITIONS<br />

Steady-state concentrations are reached after<br />

3–4 days when serum drug levels are higher by<br />

30–40% as compared to single dose.<br />

5.3 Preclinical safety data<br />

Animal toxicity studies for human risk estimation<br />

were performed for both components of the<br />

preparation, ethinylestradiol and desogestrel, and<br />

the combination.<br />

No effects which might indicate an unexpected risk<br />

to humans were observed during systemic<br />

tolerance studies after repeated administration.<br />

Long-term repeated dose toxicity studies did not<br />

indicate a tumorigenic potential. However, it must<br />

be borne in mind that sex steroids can promote<br />

the growth of certain hormone-dependent tissues<br />

and tumors.<br />

Studies on embryotoxicity and teratogenicity and<br />

the evaluation of the effects of both components<br />

on the fertility of parent animals, fetal<br />

development, lactation and reproductive<br />

performance of the offspring gave no indication of<br />

a risk of adverse effects in humans after<br />

recommended use of the preparation.<br />

In vitro and in vivo studies gave no indication of a<br />

mutagenic potential.<br />

6. PHARMACEUTICAL PARTICULARS<br />

6.1 List of excipients<br />

Blue tablets:<br />

Colloidal silicon dioxide; lactose; potato starch;<br />

povidone; stearic acid; dl-alpha-tocopherol;<br />

indigotin (E132).<br />

White tablets:<br />

Colloidal silicon dioxide; lactose; potato starch;<br />

povidone; stearic acid; dl-alpha-tocopherol.<br />

The daily amount of lactose (< 100 mg) is such<br />

that women with an intolerance to lactose are<br />

highly unlikely to experience a problem.<br />

6.2 Incompatibilities<br />

Not applicable.<br />

6.3 Shelf life<br />

Shelf life of the tablets is as indicated on the box,<br />

if stored according to the directions in Section 6.4.<br />

6.4 Special precautions for storage<br />

Store at 2°C to 30°C.<br />

6.5 Nature and contents of container<br />

Push-through packs with 7 blue and 15 white<br />

tablets. Tablets are round, flat and 6 mm in<br />

diameter. Tablets are coded on one side with<br />

Organon* and on the reverse side with TR8 (white<br />

tablets) or TR9 (blue tablets).<br />

The pack is a PVC/Al blister consisting of<br />

aluminium foil with a heat-seal coating and a PVC<br />

film. Each blister is packed in a printed aluminium<br />

pouch. The pouch is packed in a printed<br />

cardboard box together with the package leaflet.<br />

6.6 Instructions for use/handling and<br />

disposal (if appropriate)<br />

Store all drugs properly and keep them out of<br />

reach of children.<br />

7. MARKETING AUTHORIZATION<br />

HOLDER<br />

N.V. Organon<br />

P.O. Box 20<br />

5340 BH Oss<br />

The Netherlands<br />

8. NUMBERS IN THE COMMUNITY<br />

REGISTER OF MEDICINAL<br />

PRODUCTS<br />

9. DATE OF FIRST AUTHORIZATION<br />

[Market-specific information must be included in<br />

this section where applicable].<br />

10. DATE OF REVISION OF TEXT<br />

February 1998.<br />

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