A Randomized, Double-blind, Placebo-controlled Phase 2 Study to Evaluate the Effect of Filgotinib on Semen Parameters in Adult Males With Active Rheumatoid Arthritis, Psoriatic Arthritis, Ankylosing Spondylitis or Non-radiographic Axial Spondyloarthritis

The primary objective of this study is to evaluate the effect of filgotinib on semen parameters in adult males with active rheumatoid arthritis, psoriatic arthritis, ankylosing spondylitis, or non-radiographic axial spondyloarthritis.Results of this study may be pooled with the results of a separate study being conducted in participants with inflammatory bowel disease (Protocol GS-US-418-4279; NCT03201445) with the same objective.