SELLAS Life Sciences Announces Its Pivotal Phase 3 Study Of Galinpepimut-S In Acute Myeloid Leukemia Participants Surpasses Pre-Specified 80th Event

SELLAS Life Sciences Group, Inc. (NASDAQ:SLS) ("SELLAS’’ or the "Company"), a late-stage clinical biopharmaceutical company focused on the development of novel therapies for a broad range of cancer indications, today announced that the pivotal Phase 3 REGAL trial evaluating galinpepimut-S (GPS) in patients with acute myeloid leukemia (AML) has reached the pre-specified 80th event (number of deaths), triggering the final analysis of the study.

The REGAL trial is an event-driven overall survival study, and with the occurrence of the 80th event, SELLAS will proceed with database lock, unblinding of the study data, and statistical analysis of the primary endpoint data. Upon completion of this analysis, the Company will announce this quarter the preliminary topline primary endpoint results from the trial in accordance with the study’s pre-specified statistical analysis plan (SAP).