SELLAS Life Sciences Group, Inc. announced a positive review of the ongoing Phase 3 REGAL clinical trial of galinpepimut-S (GPS) in acute myeloid leukemia (AML) by the Independent Data Monitoring Committee (IDMC). The IDMC performed a routine, prespecified risk-benefit assessment of unblinded data from the study and has recommended that the trial continue without modifications. The IDMC also requested that the survival database be updated immediately prior to the next IDMC meeting, which will take place in First Quarter 2024, and be provided to the IDMC for its review at the meeting.

REGAL is a Phase 3 open-label registrational clinical trial for GPS in AML patients who have achieved complete remission following second-line salvage therapy (CR2 patients). The primary endpoint is overall survival. The IDMC is an independent group of medical, scientific, and biostatistics experts who are responsible for reviewing and evaluating patient safety and efficacy data for REGAL, and for monitoring quality and overall conduct to ensure the validity, scientific and clinical merits of the study.

The IDMC charter provides for periodic reviews for safety, efficacy, and futility in addition to the interim and final analyses.