Press release
Fulcrum Therapeutics Announces Topline Results from Phase 3 REACH Clinical Trial of Losmapimod in Facioscapulohumeral Muscular Dystrophy (FSHD)
― Losmapimod failed to show an improvement in relative surface area (RSA), a measure of reachable workspace (RWS), versus placebo at week 48 ― ― Fulcrum to
About this update from Fulcrum Therapeutics, Inc.
[{"type":"text","content":"― Losmapimod failed to show an improvement in relative surface area (RSA), a measure of reachable workspace (RWS), versus placebo at week 48 ― ― Fulcrum to suspend future losmapimod development ― ― Robust cash position enables Fulcrum to continue its mission to develop therapies addressing diseases of high unmet need including pociredir for the treatment of sickle cell disease (SCD) ― CAMBRIDGE, Mass., Sept. 12, 2024 (GLOBE NEWSWIRE) -- Fulcrum Therapeutics, Inc.® (the “Company”) (Nasdaq: FULC), a clinical-stage biopharmaceutical company focused on developing small molecules to improve the lives of patients with genetically defined rare diseases, today announced that its Phase 3 REACH trial evaluating losmapimod in patients with FSHD, did not achieve its primary endpoint of change from baseline in RSA with losmapimod compared to placebo. In addition, secondary endpoints did not achieve nominal statistical significance. The safety and tolerability profile of losmapimod was consistent with previously reported studies. The Company will complete a full evaluation of the data it received this week and plans to share the results at an upcoming medical meeting. “We are deeply disappointed that the REACH trial did not replicate the clinical results observed in the Phase 2 ReDUX4 trial,” said Alex C. Sapir, Fulcrum’s president and chief executive officer. “In light of these results, we plan to suspend the losmapimod program in FSHD. We would like to thank the FSHD patients who participated in losmapimod clinical trials, their families, the investigators, the FSHD Society, and the broader FSHD community for their unwavering support for this program.” Top-line REACH study results: Reachable Workspace (RWS): Participants receiving losmapimod demonstrated a 0.013 (±0.007) improvement in RSA at week 48 compared to placebo patients who showed a 0.010 (±0.007) improvement in RWS (p-value = 0.75).Muscle Fat Infiltration (MFI) as measured by Magnetic Resonance Imaging (MRI): Participants receiving losmapimod demonstrated an increase of 0.42% in MFI at week 48 compared to participants receiving placebo who showed an increase of 0.576% in MFI (p-value = 0.16).Shoulder Abductor Strength as measured by Hand-Held Dynamometry: Participants receiving losmapimod demonstrated a 9.63% improvement in abductor strength at week 48 compared to a 2.24% improvem...