Biologic Therapies in Sarcoidosis and Uveitis: A Review

Sarcoidosis and uveitis are chronic inflammatory conditions with potentially debilitating effects on quality of life. Steroids form the mainstay standard therapy in both conditions. Biologic agents are considered to be appropriate alternatives for treatment in steroid-refractory sarcoidosis and uveitis due to the role of tumor necrosis factor (TNF) in mediating the inflammatory cascade seen in both conditions. We performed a thorough literature search using PubMed to compare the extent of use, efficacy, and safety profile of individual anti-TNF agents in the management of these conditions. Our review consists of two systematic reviews with meta-analysis, thirteen observational studies, and fifteen case series/reports. Infliximab had the widest range of organ-system usage in extra-pulmonary sarcoidosis but is equivalent to adalimumab in terms of efficacy. In uveitis, adalimumab was found to be the most efficacious agent for maintaining disease remission in adults and children with chronic non-infectious uveitis. Etanercept was neither used widely, nor was it efficacious in the management of either condition. In terms of safety profile, biologic agents were found to be well tolerated and have a similar safety profile. More randomized clinical trials are needed to inform evidence-based use of biologic agents in these conditions.