Nonserious Infections in Patients With Rheumatoid Arthritis: Results From the British Society for Rheumatology Biologics Register for Rheumatoid Arthritis.

NSI occur frequently in RA, and predictors mirror those reported with serious infections. All biologics are associated with a greater risk of NSI, with differences observed between agents. While unmeasured confounding must be considered, the magnitude of effect is large, and a relationship between NSI and targeted immunomodulatory therapy likely exists.