Aclaris Therapeutics Announces Top-line Results from 12-Week Phase 2b Trial of Oral Zunsemetinib (ATI-450) for Moderate to Severe Rheumatoid Arthritis and Provides Corporate Update
WAYNE, Pa., Nov. 13, 2023 (GLOBE NEWSWIRE) -- Aclaris Therapeutics, Inc. (NASDAQ: ACRS), a clinical-stage biopharmaceutical company focused on developing novel drugs for immuno-inflammatory diseases, today announced top-line results from a Phase 2b study of zunsemetinib (ATI-450), an investigational oral MK2 inhibitor, in subjects with moderate to severe rheumatoid arthritis (RA; ATI-450-RA-202).
- The primary efficacy endpoint is the proportion of patients achieving an ACR20 response following 12 weeks of treatment.
- Based on the overall program results, Aclaris will discontinue further development of the ATI-450 program, including halting enrollment of Aclaris’ ongoing Phase 2a trial of zunsemetinib in psoriatic arthritis.
- “We are deeply disappointed with the results of this trial and for patients suffering from rheumatoid arthritis.
- Aclaris is supporting Washington University in a first-in-human investigator-initiated Phase 1a trial of ATI-2231 in patients with advanced solid tumor malignancies.