NEW YORK, June 10, 2024 (GLOBE NEWSWIRE) -- 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 the completion of enrollment as well as positive initial data from the ongoing Phase 2a trial of SLS009, a highly selective CDK9 inhibitor, in relapsed/refractory acute myeloid leukemia (r/r AML).
“We are pleased to announce the completion of enrollment in the initial portion of our Phase 2a trial representing a significant milestone in the development of SLS009 in AML,” said Angelos Stergiou, MD, ScD h.c., President and Chief Executive Officer of SELLAS. “There has been a high level of enthusiasm from the clinical sites, trial investigators, and patients, reflecting the significant unmet need in the AML patient population previously treated with venetoclax-based regimens. We are extremely grateful to everyone who has helped us achieve this important milestone ahead of schedule.”
Dr. Stergiou continued: “In addition, we are excited to share very promising initial data from this Phase 2a trial. Efficacy was demonstrated across all cohorts far exceeding the targeted ORR of 20% and median overall survival (mOS) of 3 months. The results also showed that SLS009 was well-tolerated across all doses. These data give us increased confidence in SLS009 as a potential new treatment for AML. We remain committed to advancing the treatment landscape for this underserved patient population and we look forward to continuing the trial, mainly the expansion cohorts, and reporting additional study updates and data in Q3 of this year.”
Thirty heavily pretreated patients were recruited in 5 centers across the US, reflecting the high unmet need of this refractory/relapsed patient population. Except for one, all patients in this Phase 2a trial had unfavorable/poor cytogenetic and/or molecular genetics risk (97%) and were treated with continued venetoclax – azacytidine combination therapy after having failed it or similar venetoclax combinations, often more than once. The expected overall survival in those patients is approximately 2.5 months.
Key Highlights from the Initial Data:
Safety:
Efficacy:
The Phase 2a clinical trial of SLS009 is an open-label, single-arm, multi-center study designed to evaluate the safety, tolerability, and efficacy of SLS009 in combination with venetoclax and azacitidine at two dose levels, 45 and 60 mg. In the 60 mg dose cohort patients were randomized into either a 60 mg dose once per week or a 30 mg dose two times per week. The target response rate at the optimal dose level is 20% with a target median survival of at least 3 months. In addition, the study aims to identify biomarkers for the target patient population and enrichment for further trials. For more information on the study, visit clinicaltrial.gov identifier NCT04588922.
About SELLAS Life Sciences Group, Inc.
SELLAS is a late-stage clinical biopharmaceutical company focused on the development of novel therapeutics for a broad range of cancer indications. SELLAS’ other lead product candidate, GPS, is licensed from Memorial Sloan Kettering Cancer Center and targets the WT1 protein, which is present in an array of tumor types. GPS has the potential as a monotherapy and combination with other therapies to address a broad spectrum of hematologic malignancies and solid tumor indications. The Company is also developing SLS009 (formerly GFH009), a small molecule, highly selective CDK9 inhibitor, which is licensed from GenFleet Therapeutics (Shanghai), Inc., for all therapeutic and diagnostic uses in the world outside of Greater China. For more information on SELLAS, please visit www.sellaslifesciences.com.
Forward-Looking Statements
This press release contains forward-looking statements. All statements other than statements of historical facts are “forward-looking statements,” including those relating to future events. In some cases, forward-looking statements can be identified by terminology such as “plan,” “expect,” “anticipate,” “may,” “might,” “will,” “should,” “project,” “believe,” “estimate,” “predict,” “potential,” “intend,” or “continue” and other words or terms of similar meaning. These statements include, without limitation, statements related to the GPS clinical development program, including the REGAL study and the timing of future milestones related thereto. These forward-looking statements are based on current plans, objectives, estimates, expectations and intentions, and inherently involve significant risks and uncertainties. Actual results and the timing of events could differ materially from those anticipated in such forward-looking statements as a result of these risks and uncertainties, which include, without limitation, risks and uncertainties with oncology product development and clinical success thereof, the uncertainty of regulatory approval, and other risks and uncertainties affecting SELLAS and its development programs as set forth under the caption “Risk Factors” in SELLAS’ Annual Report on Form 10-K filed on March 28, 2024 and in its other SEC filings. Other risks and uncertainties of which SELLAS is not currently aware may also affect SELLAS’ forward-looking statements and may cause actual results and the timing of events to differ materially from those anticipated. The forward-looking statements herein are made only as of the date hereof. SELLAS undertakes no obligation to update or supplement any forward-looking statements to reflect actual results, new information, future events, changes in its expectations or other circumstances that exist after the date as of which the forward-looking statements were made.
Investor Contact
Bruce Mackle
Managing Director
LifeSci Advisors, LLC
This email address is being protected from spambots. You need JavaScript enabled to view it.
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