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  • Title: Etanercept plus narrowband ultraviolet B phototherapy of psoriasis is more effective than etanercept monotherapy at 6 weeks.
    Author: Gambichler T, Tigges C, Scola N, Weber J, Skrygan M, Bechara FG, Altmeyer P, Kreuter A.
    Journal: Br J Dermatol; 2011 Jun; 164(6):1383-6. PubMed ID: 21466532.
    Abstract:
    BACKGROUND: A substantial portion of patients with psoriasis does not achieve a satisfactory response under antitumour necrosis factor (TNF)-α biological therapies. OBJECTIVES: We aimed to evaluate whether etanercept plus narrowband ultraviolet B (NB-UVB) phototherapy is superior to etanercept monotherapy in the management of psoriasis. METHODS: In this prospective study, patients with psoriasis were treated with etanercept 25 mg twice weekly. Two marker lesions were selected for determination of the modified Psoriasis Area and Severity Index (M-PASI). NB-UVB was administered thrice weekly whereby one marker lesion was covered as nonirradiated control. Skin biopsies for histology and immunohistochemistry were performed in both marker lesions after a 6-week treatment course. RESULTS: After 6 weeks of therapy, the relative M-PASI reduction (mean ± SD) in etanercept-treated sites (53·7 ± 36·9%) was significantly lower than the reduction in etanercept plus NB-UVB-treated lesions (64 ± 27·8%; P = 0·011). At the end of treatment, histology scores of etanercept-treated psoriatic plaques were significantly higher than scores of etanercept plus NB-UVB-treated sites (4·6 ± 2·7 vs. 3·7 ± 2·4; P =0·045). Epidermal immunoreactivity for CD1a, CD4 and CD8 was significantly lower in etanercept plus NB-UVB-treated lesions when compared with etanercept monotherapy. CONCLUSIONS: Etanercept combined with NB-UVB is more effective than etanercept monotherapy at 6 weeks as demonstrated at a clinical, histological and immunohistological level. However, as there is an increased risk for malignancy by treatment with TNF-α blockers alone or in combination with phototherapy, we recommend to restrict this highly effective combination to short periods of time, for instance to obtain a quicker response, and to avoid long-term treatment.
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