FDA issues surprise rejection of Gilead, Galapagos rheumatoid arthritis drug August 19, 2020 Auto Bot autoimmune disease, BioPharma, biopharma nl, California, FDA, Filgotinib, Food and Drug Administration, Foster City, Galapagos, Gilead Sciences, rheumatoid arthritis 0 While there had been some risks to filgotinib’s approval cited before, analysts expressed surprise at the decision, with one writing it would likely delay approval by at least a year. Shares of both companies fell sharply on the news.