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Narrowband UV-B Phototherapy, Alefacept, and Clearance of Psoriasis
Franz J. Legat, MD;
Angelika Hofer, MD;
Alexandra Wackernagel, MD;
Wolfgang Salmhofer, MD;
Franz Quehenberger, PhD;
Helmut Kerl, MD;
Peter Wolf, MD
Arch Dermatol. 2007;143(8):1016-1022.
Objective To determine whether the addition of 311-nm narrowband UV-B (NB UV-B) phototherapy accelerates and improves the therapeutic efficacy of alefacept, a biological antipsoriatic drug approved for the treatment of moderate to severe psoriasis.
Design Randomized half-body comparison study.
Setting Ambulatory section of a university hospital photodermatology unit.
Patients Fourteen patients with moderate to severe psoriasis.
Interventions All patients were treated with 7.5 mg of intravenous alefacept once weekly for 12 weeks. Three times each week, a randomly selected body half (left or right) was treated with NB UV-B light until complete remission, defined as a reduction in the Psoriasis Area Severity Index (PASI) to 3 or lower, was achieved on the irradiated body half.
Main Outcome Measures Modified PASI, self-assessed visual analogue scale rating of skin lesions, and self-assessed therapeutic efficacy.
Results After 12 weeks of treatment, the mean PASIs on UV-irradiated and nonirradiated body halves were significantly reduced by 81% and 62%, respectively (P < .001). From week 3 to week 12, the mean PASI was significantly lower on UV-irradiated body halves than on nonirradiated body halves (P < .001). At week 12, PASI reductions of greater than 75% had been achieved significantly more often on UV-irradiated body halves (86%, 12 of 14) than on nonirradiated body halves (43%, 6 of 14), and complete remission had been achieved significantly more often on UV-irradiated body halves (43%, 6 of 14) than on nonirradiated body halves (0 of 14) (McNemar test P = .03).
Conclusions In this randomized half-side comparison of alefacept with and without phototherapy for psoriasis, alefacept with NB UV-B phototherapy accelerated and improved the clearance of psoriasis. This suggests a promising future for this combination as antipsoriatic therapy.
Trial Registration clinicaltrials.gov Identifier: NCT00407342
Author Affiliations: Research Unit for Photodermatology (Drs Legat, Hofer, Wackernagel, and Wolf), Department of Dermatology (Drs Legat, Hofer, Wackernagel, Salmhofer, Kerl, and Wolf), and Institute for Medical Informatics, Statistics, and Documentation (Dr Quehenberger), Medical University of Graz, Graz, Austria.
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