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Docetaxel with prednisone or prednisolone for the treatment of ...

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TABLE 2 Treatment comparisons<br />

relative effectiveness <strong>of</strong> docetaxel versus best<br />

supp<strong>or</strong>tive care.<br />

The following sections describe <strong>the</strong> results <strong>of</strong> each<br />

individual study. Following this, an attempt is<br />

made to syn<strong>the</strong>sise <strong>the</strong>se data using narrative and<br />

f<strong>or</strong>mal quantitative approaches.<br />

Clinical evidence<br />

<strong>Docetaxel</strong> plus <strong>prednisone</strong> versus<br />

mitoxantrone plus <strong>prednisone</strong><br />

One RCT (TAX 327) was identified which aimed<br />

to determine whe<strong>the</strong>r docetaxel plus <strong>prednisone</strong><br />

improves overall survival compared <strong>with</strong><br />

mitoxantrone plus <strong>prednisone</strong> in men <strong>with</strong><br />

advanced mHRPC. In addition to <strong>the</strong> main<br />

publication <strong>of</strong> <strong>the</strong> trial, 27 <strong>the</strong>re were two<br />

abstracts, 35,36 an approval package 37 and an<br />

approval summary 34 from <strong>the</strong> Center f<strong>or</strong> Drug<br />

Evaluation and Research at <strong>the</strong> FDA. A fur<strong>the</strong>r<br />

rep<strong>or</strong>t was obtained from San<strong>of</strong>i-Aventis as part <strong>of</strong><br />

<strong>the</strong> industry submission. 61<br />

Description <strong>of</strong> <strong>the</strong> trial comparing docetaxel plus<br />

<strong>prednisone</strong> <strong>with</strong> mitoxantrone plus <strong>prednisone</strong><br />

This multi-centre RCT included 1006 men <strong>with</strong><br />

mHRPC; 335 patients were randomised to receive<br />

a 1-hour intravenous infusion <strong>of</strong> docetaxel<br />

(75 mg/m 2 on day 1 every 21 days) plus <strong>or</strong>al<br />

<strong>prednisone</strong> (<strong>or</strong> <strong>prednisolone</strong>), herein referred to<br />

as <strong>the</strong> 3-weekly docetaxel group, 334 patients were<br />

randomised to receive a 30-minute intravenous<br />

infusion <strong>of</strong> docetaxel (30 mg/m 2 on days 1, 8, 15,<br />

22 and 29 in a 6-week cycle) plus <strong>or</strong>al <strong>prednisone</strong><br />

(<strong>or</strong> <strong>prednisolone</strong>), herein referred to as <strong>the</strong> weekly<br />

docetaxel group, and 337 patients were<br />

randomised to receive a 30-minute intravenous<br />

© Queen’s Printer and Controller <strong>of</strong> HMSO 2007. All rights reserved.<br />

Health Technology Assessment 2007; Vol. 11: No. 2<br />

Treatment comparisons<br />

Trial D a + P D a + P + E D + E M + C M + C + Clo C<br />

TAX 327 ✓ ✓(M+P)<br />

Oudard et al. ✓ ✓(M+P)<br />

SWOG 9916 ✓ ✓(M+P)<br />

Berry et al. ✓(M+P) ✓(P)<br />

CCI-NOV22 ✓(M+P) ✓(P)<br />

CALGB 9182 ✓(M+H) ✓(H)<br />

Ernst et al. ✓(M+P) ✓<br />

C, c<strong>or</strong>ticosteroid (ei<strong>the</strong>r <strong>prednisone</strong> <strong>or</strong> hydroc<strong>or</strong>tisone); Clo, clodronate; D, docetaxel; E, estramustine; H, hydroc<strong>or</strong>tisone;<br />

M, mitoxantrone; P, <strong>prednisone</strong>/<strong>prednisolone</strong>.<br />

a Evaluated at two different dosages.<br />

infusion <strong>of</strong> mitoxantrone (12 mg/m 2 on day 1 every<br />

21 days) plus <strong>or</strong>al <strong>prednisone</strong> (<strong>or</strong> <strong>prednisolone</strong>),<br />

herein referred to as <strong>the</strong> mitoxantrone group.<br />

Patients in <strong>the</strong> docetaxel groups also received<br />

premedication <strong>with</strong> dexamethasone. Patients were<br />

stratified by baseline pain level and Karn<strong>of</strong>sky<br />

perf<strong>or</strong>mance-status sc<strong>or</strong>e. The baseline<br />

characteristics <strong>of</strong> patients across <strong>the</strong> three groups<br />

appear to have been well balanced in terms <strong>of</strong><br />

Gleason sc<strong>or</strong>e, PSA level, presence <strong>of</strong> pain,<br />

perf<strong>or</strong>mance status, evidence <strong>of</strong> progression at<br />

entry (bone scan, increase in lesions <strong>or</strong> PSA),<br />

previous <strong>treatment</strong>s, age, extent <strong>of</strong> disease, race<br />

and stage <strong>of</strong> disease at diagnosis.<br />

F<strong>or</strong> inclusion in <strong>the</strong> trial, patients had to have<br />

clinical <strong>or</strong> radiological evidence <strong>of</strong> metastatic<br />

disease <strong>with</strong> disease progression during h<strong>or</strong>monal<br />

<strong>the</strong>rapy; an increase in serum PSA level on three<br />

consecutive measurements obtained at least 1 week<br />

apart <strong>or</strong> evidence from physical examination <strong>or</strong><br />

imaging studies. Patients were also required to<br />

have a Karn<strong>of</strong>sky perf<strong>or</strong>mance-status sc<strong>or</strong>e <strong>of</strong> at<br />

least 60% and stable levels <strong>of</strong> pain f<strong>or</strong> at least<br />

7 days bef<strong>or</strong>e randomisation; daily variation <strong>of</strong> no<br />

m<strong>or</strong>e than one in Present Pain Intensity (PPI) scale<br />

from <strong>the</strong> McGill–Melzack questionnaire <strong>or</strong> 25% in<br />

analgesic sc<strong>or</strong>e.<br />

The median number <strong>of</strong> cycles received by <strong>the</strong><br />

3-weekly docetaxel group was 9.5 (range 1–11),<br />

<strong>the</strong> median number received by <strong>the</strong> group<br />

receiving weekly docetaxel (6-week cycle) was 4<br />

(range 1–6) and <strong>the</strong> median f<strong>or</strong> <strong>the</strong> mitoxantrone<br />

group was 5 (range 1–11). The planned <strong>treatment</strong><br />

was delivered to 98% patients in <strong>the</strong> 3-weekly<br />

docetaxel group, 96% in <strong>the</strong> weekly docetaxel<br />

group and 99% in <strong>the</strong> mitoxantrone group. The<br />

prop<strong>or</strong>tion <strong>of</strong> patients in each <strong>of</strong> <strong>the</strong> groups<br />

15

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