Biologic Therapy in Psoriasis: Perspectives on Associated Risks and Patient Management

Background: Previous publications have described practical considerations for initiating biologic therapy in psoriasis patients. However, most publications have focused on anti―tumor necrosis factor (TNF) therapy. Objective: To create an evidence-based, practical tool that provides guidance on patient management for all biologics currently approved in Canada and the United States. Methods: Psoriasis publications regarding safety issues in the initiation or monitoring of adalimumab, alefacept, etanercept, infliximab, or ustekinumab therapy were identified through a PubMed search. Phase III trials and open-label extensions (regardless of indication) and relevant guidelines from Health Canada were used to compile this review. Results: Although these biologic agents have demonstrated efficacy in patients with psoriasis and are generally considered safe and well tolerated, rare but serious safety issues (ie, demyelination, infection, tuberculosis, malignancy, lymphoma, cardiovascular outcomes, hepatitis, pregnancy, surgery, and vaccination) have been observed. Attention to specific aspects of patient management (ie, prescreening requirements, symptoms to watch for, appropriate treatment, and referrals) is required to mitigate risk. Conclusion: Much of the evidence regarding the long-term safety of these agents has been based on experience in other patient populations. However, it does serve to guide us in understanding the risks that may impact the management of psoriasis patients.