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SELLAS to Present at the 2025 American Society of Clinical Oncology (ASCO) Annual Meeting

Key Takeaway: SELLAS Life Sciences Group, Inc. announced its participation in the 2025 American Society of Clinical Oncology Annual Meeting, where it will present findings on SLS009's efficacy in ASXL1 mutated colorectal cancer. The poster session is scheduled for June 2, 2025. SLS009 is currently undergoing evaluation in a Phase 2 clinical trial to assess its safety and effectiveness in combination with other therapies, focusing on AML patients with ASXL1 mutations. The full text of the relevant abstract will be released on May 22, 2025.

Market Sentiment Analysis

POSITIVE FACTORS

  • SELLAS will present promising preclinical efficacy of SLS009.
  • SLS009 is designed as a potentially best-in-class CDK9 inhibitor.
  • The presentation at ASCO highlights SELLAS' innovations in cancer therapy.
  • Initial clinical data shows a high response rate in AML patients with ASXL1 mutations.

Full Press Release Details

NEW YORK, April 23, 2025 (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 that preclinical efficacy of SLS009 in ASXL1 mutated colorectal cancer lines will be presented at the 2025 American Society of Clinical Oncology (ASCO) Annual Meeting, to take place May 30- June 3, 2025 in Chicago, Illinois.
Poster presentation details:
Title: In vitro efficacy of CDK9 inhibitor tambiciclib (SLS009) in ASXL1 mutated colorectal cancer cell lines.
Session Date and Time: Monday, June 2, 2025, 1:30 PM-4:30 PM CDT
Session Title: Developmental Therapeutics—Molecularly Targeted Agents and Tumor Biology
Location: Hall A - Posters and Exhibits
The full text of the abstract will be released by ASCO on May 22, 2025, at 5:00 PM EDT on asco.org/abstracts.
SLS009 is currently being investigated in a Phase 2 open-label, single-arm, multi-center study designed to evaluate the safety, tolerability, and efficacy of SLS009 in combination with venetoclax and azacitidine including AML patients with ASXL1 mutations. Initial clinical safety and efficacy data are available. 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’ 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 (tambiciclib) - potentially the first and best-in-class differentiated small molecule CDK9 inhibitor with reduced toxicity and increased potency compared to other CDK9 inhibitors. Data suggests that SLS009 demonstrated a high response rate in AML patients with unfavorable prognostic factors including ASXL1 mutation, commonly associated with poor prognosis in various myeloid diseases. 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 20, 2025 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.
LifeSci Advisors, LLC

Frequently Asked Questions

What is the focus of SELLAS Life Sciences Group?

SELLAS specializes in developing novel therapies for various cancer indications.

When will the ASCO Annual Meeting take place?

The ASCO Annual Meeting will occur from May 30 to June 3, 2025.

What is SLS009 being evaluated for?

SLS009 is being studied for safety, tolerability, and efficacy in cancer patients.

Where can I find more information about SELLAS?

More details about SELLAS can be found at www.sellaslifesciences.com.

What is the significance of ASXL1 mutations?

ASXL1 mutations are often linked to poor prognosis in various myeloid diseases.

Last updated: Apr 23, 2025