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APPENDICES - NIHR Health Technology Assessment Programme

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218<br />

Appendix 14<br />

Study details Population details Treatment details Results Interpretation<br />

Authors’ conclusions ALA–PDT<br />

may offer the best treatment option<br />

for Bowen’s disease. This study shows<br />

the potential of light fractionation for<br />

enhancing the response of the disease to<br />

ALA–PDT and illustrates the need for a<br />

larger, suitably powered trial to determine<br />

if the effect is statistically significant<br />

Brief study appraisal This was a<br />

small trial with unclear methods of<br />

randomisation and blinding. Treatment<br />

methods were reported but not all<br />

outcomes were detailed. This study shows<br />

the potential of PDT and its enhancement<br />

through light fractionation but would need<br />

confirmation, as the authors state, in an<br />

adequately powered trial<br />

Morbidity In the single illumination<br />

group, CR was seen in 22 patches (80%)<br />

at 12 mth. In the twofold-illumination<br />

group CR was seen in 22 patches (88%)<br />

(NS). Patients reported a 3-wk maximum<br />

healing time, which was not different<br />

between treatments<br />

QoL and return to normal activity<br />

Not assessed<br />

AEs All patients in both groups<br />

experienced some discomfort during<br />

treatment but all finished therapy. No<br />

SAEs were seen in either group. In the<br />

single-illumination group none of the<br />

patients complained of pain during<br />

treatment. In the twofold-illumination<br />

group five patients complained about pain<br />

in the treatment of six patches. Lidocaine<br />

without adrenaline was used in four<br />

patches<br />

Trial treatments ALA–PDT using a<br />

single illumination vs ALA–PDT with a<br />

twofold illumination<br />

Intervention Single Illumination: Surface<br />

scale or crusts were removed. 20% ALA,<br />

locally produced, was applied topically and<br />

left in place for 4 hr with a margin of 1 cm.<br />

A diode laser and light emitting diode<br />

provided illumination at a wavelength of<br />

630 nm, 4 hr after ALA application at a<br />

dose of 75 J/cm2 Further PDT parameters were not<br />

reported<br />

Comparator Twofold illumination: As<br />

for single illumination except patches<br />

were light treated 4 and 6 hr after ALA<br />

application at doses of 20 and 80 J/cm2 ,<br />

respectively, separated by a 2-hr dark<br />

interval. Each illumination was delivered at<br />

50 mW/cm2 Type(s) of lesion<br />

and histology<br />

Bowen’s disease<br />

Main eligibility<br />

criteria Not stated<br />

Patient<br />

characteristics<br />

% Male: 43<br />

Age range: 49–91 yr<br />

Mean age: 74 yr<br />

Mean lesion diameter:<br />

14.5 mm (range<br />

5–40 mm)<br />

Locations: Trunk 12,<br />

lower leg 11, hand<br />

8, ear 7, upper leg 4,<br />

cheek and/or nose 3,<br />

eyelid 2, arm 1, frontal<br />

and/or temporal area<br />

1, scalp 1<br />

The sample included<br />

seven organ recipients<br />

Concomitant<br />

treatment Lidocaine,<br />

2% without adrenaline<br />

was used if patients<br />

required it<br />

Authors de Haas et<br />

al. (2007) 69<br />

Data source Full<br />

published paper<br />

Country The<br />

Netherlands<br />

Language English<br />

Study design RCT<br />

No. of participants<br />

Total: 40 (50 Bowen’s<br />

disease patches)<br />

Intervention: 25<br />

lesions (participant no.<br />

not stated)<br />

Comparator: 25<br />

lesions (participant no.<br />

not stated)<br />

No. of recruiting<br />

centres One<br />

Follow-up period<br />

and frequency 4 wk,<br />

then at 3 mth intervals<br />

up to 28 mth

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