Recovery of the response to biological treatments using narrow band ultraviolet-B in patients with moderate to severe psoriasis: a retrospective study of 17 patients.

BACKGROUND/PURPOSE: Biological therapy has demonstrated a very satisfactory anti-psoriatic effect; however, the loss of response with time has been reported. OBJECTIVE: To evaluate the efficacy of the narrow band ultraviolet-B phototherapy (NB-UVB) as a rescue in patients with moderate to severe psoriasis who have lost efficacy in their biological treatment. METHODS: A retrospective chart review study was conducted on patients with moderate to severe psoriasis receiving treatment with a biologic, with a good initial response that subsequently had lost efficacy. All the patients received combined treatment with NB-UVB. RESULTS: Seventeen patients were included, with a mean age of 44 years. The biologics were: 8 etanercept, 4 adalimumab, 3 ustekinumab, 1 efalizumab, and 1 infliximab. The mean NB-UVB sessions was 25 (7-48 sessions), with a mean accumulated dose of 31.12 J/cm(2) (5.2-94.6 J/cm(2) ). Sixteen patients had the following results: 44% PASI 90-100, 31.3% PASI 75-89, and 25% PASI 50-74 response. CONCLUSION: According to this study on clinical practice, it could be considered that the use of NB-UVB along with biological drugs that have lost efficacy in controlling moderate to severe psoriasis in adults could contribute to the recovery of the initial response.