Effects of Filgotinib on Semen Parameters and Sex Hormones in Male Patients with Inflammatory Diseases: Results from the Phase 2, Randomised, Double-blind, Placebo-controlled MANTA and MANTA-RAy Studies
Ann Rheum Dis 2023;82:1049–1058
Reinisch, et al. show that filgotinib treatment has no effect on semen parameters for men with active inflammatory diseases. This contrasts with pre-clinical studies that showed fertility issues in male animals.