Other clinical programs with filgotinib
In the course of 2017, Gilead initiated clinical trials with filgotinib in Sjögren’s disease, cutaneous lupus erythematosus, lupus membranous nephropathy, and uveitis. We initiated patient trials with filgotinib in psoriatic arthritis and ankylosing spondylitis, for which we expect to report topline results in 2018.
Psoriatic arthritis is an inflammatory form of arthritis, affecting up to 30 percent of psoriasis patients. There are approximately 1 million patients in the U.S. and Europe today, with men and women being affected equally. Psoriatic arthritis can cause swelling, stiffness and pain in and around the joints, cause nail changes and overall fatigue. Studies show that delaying treatment for psoriatic arthritis as little as six months can result in permanent joint damage. Early recognition, diagnosis and treatment of psoriatic arthritis are critical to relieve pain and inflammation and help prevent joint damage. Despite the availability of a number of treatment options, few current treatments effectively relieve the enthesitis (inflammation of the tendons or ligaments) and symptoms in the joints and the skin.
The EQUATOR Phase 2 trial is a multi-center, randomized, double-blind, placebo-controlled trial to assess the safety and efficacy of the selective JAK1 inhibitor filgotinib in adult patients with moderately to severely active psoriatic arthritis. Approximately 124 patients are planned to be randomized in the trial in a 1:1 ratio to receive 200 mg or placebo once-daily administered for 16 weeks. EQUATOR will recruit in 8 European countries. The EQUATOR trial is fully recruited, and we expect trial completion in the second quarter of 2018.
Primary goal of EQUATOR is to evaluate the effect of filgotinib compared to placebo on the signs and symptoms of psoriatic arthritis, as assessed by the ACR20 at Week 16. The trial also explores the effects of filgotinib on the skin manifestations (psoriasis) as well as other domains like fingers (dactylitis), tendon insertions (tendinitis), spine involvement (spondylitis) and nail involvement.
Ankylosing spondylitis (AS)
AS, a systemic, chronic, and progressive inflammatory arthritis, is one of the most common rheumatic diseases across the globe, affecting ~2 million patients in the U.S., Europe, and Japan today. AS primarily affects the spine and sacroiliac joints and progresses into severe inflammation that fuses the spine, leading to permanent painful stiffness of the back. Currently, there is no known cure for AS, but there are treatments and medications available to reduce symptoms and manage pain. Recent studies show that the newer biologic medications can potentially slow disease progression in some people, with varying responses.
The TORTUGA Phase 2 trial is a multi-center, randomized, double-blind, placebo-controlled trial to assess the safety and efficacy of the selective JAK1 inhibitor filgotinib in adult patients with moderate to severe active AS. Approximately 100 patients are planned to be randomized in the trial in a 1:1 ratio to receive 200 mg or placebo once-daily administered for 12 weeks. TORTUGA will recruit in 8 European countries. We expect to complete TORTUGA in the second half of 2018.
The primary goal of TORTUGA is to evaluate the effect of filgotinib compared to placebo on the signs and symptoms of AS, as assessed by the Ankylosing Spondylitis Disease Activity Score (ASDAS) at Week 12. The trial also explores signs & symptoms of AS, physical function, spinal mobility, enthesitis, spinal and sacroiliac joint inflammation, and safety.