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  • Title: Systematic review of UV-based therapy for psoriasis.
    Author: Almutawa F, Alnomair N, Wang Y, Hamzavi I, Lim HW.
    Journal: Am J Clin Dermatol; 2013 Apr; 14(2):87-109. PubMed ID: 23572293.
    Abstract:
    BACKGROUND: UV-based therapies, which include narrow-band (NB) UVB, broad-band (BB) UVB, and psoralen and UVA (PUVA), are well known treatment options for moderate to severe plaque psoriasis. However, there are limited evidence-based reviews on their efficacy, short-term safety, and tolerability. AIM: The aim of the study was to evaluate the efficacy, short-term safety, and tolerability of UV-based therapy in the treatment of adults with moderate to severe plaque psoriasis. METHODS: We performed a systematic review and meta-analysis of randomized controlled trials (RCTs) evaluating NB-UVB, BB-UVB, and PUVA in adults with moderate to severe plaque-type psoriasis. Our efficacy outcomes were ≥ Psoriasis Area and Severity Index (PASI)-75 and clearance. We evaluated the short-term safety and tolerability from the percentage of adverse effects and withdrawal due to adverse effects, respectively. RESULTS: Forty-one RCTs, with a total of 2,416 patients, met the eligibility criteria and were included in the analysis. In regard to PASI-75 in monotherapy trials, PUVA (mean: 73 %, 95 % CI 56-88) was the most effective modality. Trials with BB-UVB also showed a high PASI-75 (73 %) but with a wide CI (18-98) due to heterogeneity of the total available three studies. This was followed by NB-UVB (mean: 62 %, 95 % CI 45-79) then bath PUVA (mean: 47 %, 95 % CI 30-65). In regard to clearance in the monotherapy trials, PUVA (mean: 79 %, 95 % CI 69-88) was superior to NB-UVB (mean: 68 %, 95 % CI 57-78), BB-UVB (mean: 59 %, 95 % CI 44-72), and bath PUVA (mean: 58 %, 95 % CI 44-72). The percentages of asymptomatic erythema development in monotherapy trials were 64 % for BB-UVB, 57 % for NB-UVB, 45 % for PUVA, and 34 % for bath PUVA. Symptomatic erythema or blistering percentages for the monotherapy trials were as follows: 7.8 % for NB-UVB, 2 % for BB-UVB, 17 % for PUVA, and 21 % for bath PUVA. The percentages of withdrawal due to adverse effects were 2 % for NB-UVB, 4.6 % for BB-UVB, 5 % for PUVA, and 0.7 % for bath PUVA monotherapy trials. CONCLUSIONS: As a monotherapy, PUVA was more effective than NB-UVB, and NB-UVB was more effective than BB-UVB and bath PUVA in the treatment of adults with moderate to severe plaque-type psoriasis, based on clearance as an end point. Based on PASI-75, the results were similar except for BB-UVB, which showed a high mean PASI-75 (73 %) that was similar to PUVA, but with a wide CI (18-98). The short-term adverse effects were mild as shown by the low rate of withdrawal due to adverse effects.
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