NEW YORK, Sept. 30, 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 it will host a virtual R&D Day on Wednesday, October 29, 2025 at 10:00 AM ET featuring key opinion leaders (KOLs), alongside company management, to discuss the unmet medical need and evolving treatment landscape for acute myeloid leuke ...

Core Points - SELLAS Life Sciences Group, Inc. announced the immediate exercise of warrants to purchase up to 19,685,040 shares of common stock for gross cash proceeds of approximately $23.6 million [1][2] - The investor will receive new unregistered warrants at an exercise price of $1.88, which will be exercisable immediately and will expire in five years and six months [2] - The transaction is expected to close on or about September 12, 2025, subject to customary closing conditions [2] Company Overview - SELLAS is a late-stage clinical biopharmaceutical company focused on developing novel therapies for various cancer indications [6] - The lead product candidate, GPS, targets the WT1 protein present in multiple tumor types and has potential as both a monotherapy and in combination with other therapies [6] - The company is also developing SLS009, a differentiated small molecule CDK9 inhibitor, which has shown a high response rate in AML patients with unfavorable prognostic factors [6]

Company Overview - SELLAS Life Sciences Group, Inc. (NASDAQ: SLS) is a clinical-stage biopharmaceutical company focused on developing cancer therapies, particularly for hematologic malignancies [1] - The company's pipeline includes two candidates: Galinpepimut-S (GPS) and SLS009 (tambiciclib) [1] Product Pipeline - Galinpepimut-S (GPS) is an immunotherapy currently in Phase 3 clinical trials for acute myeloid leukemia (AML) [1] - SLS009 (tambiciclib) is another candidate in the company's pipeline, although specific details about its development stage are not provided [1]

Core Insights - SELLAS Life Sciences Group, Inc. is advancing its pipeline for Acute Myeloid Leukemia (AML) with positive results from Phase 2 trials and a recommendation to continue Phase 3 trials without modification [1][3][4] Clinical Developments - The Phase 2 trial of SLS009 achieved a 44% response rate in patients with Acute Myeloid Leukemia-Myelodysplasia-Related Changes (AML-MRC), significantly exceeding the targeted 20% overall response rate [2][4] - The FDA has recommended advancing SLS009 into a first-line AML trial, with enrollment expected to begin by Q1 2026 [1][5] - The final analysis of the Phase 3 REGAL trial for GPS is anticipated by year-end 2025, with no safety concerns identified [1][3] Financial Performance - As of June 30, 2025, the company reported cash and cash equivalents of approximately $25.3 million, with an additional $4.0 million received from warrant exercises in July 2025 [1][13] - Research and development expenses for Q2 2025 were $3.9 million, a decrease from $5.2 million in Q2 2024, primarily due to reduced clinical trial expenses [10] - The net loss for Q2 2025 was $6.6 million, compared to a net loss of $7.5 million in Q2 2024, indicating improved financial performance [12] Corporate Updates - The company has expanded its Scientific Advisory Board with three new members, enhancing its strategic guidance in oncology [7] - SELLAS has been included in the Russell 3000 and Russell 2000 indexes, which track the performance of the largest publicly traded U.S. companies [8]

Core Viewpoint - SELLAS Life Sciences Group, Inc. has received a positive recommendation from the Independent Data Monitoring Committee (IDMC) to continue the Phase 3 REGAL trial of galinpepimut-S (GPS) in acute myeloid leukemia (AML) without modification, indicating a favorable risk-benefit profile and no safety concerns identified [1][2]. Group 1: Trial Details - The Phase 3 REGAL trial is a survival-driven study aimed at evaluating GPS in AML patients who have achieved complete remission following second-line salvage therapy, with the primary endpoint being overall survival [4]. - The trial completed enrollment in April 2024, with a total of 126 patients randomized, and approximately 75% of patients enrolled from study sites in the U.S. and Europe, with the U.S. being the highest enrolling country [2][4]. - The next and final analysis of the trial will occur once 80 events (deaths) have been recorded, which has not yet been reached at the time of the IDMC review [3]. Group 2: Company Overview - SELLAS is a late-stage clinical biopharmaceutical company focused on developing novel therapeutics for various cancer indications, with its lead product candidate GPS targeting the WT1 protein present in multiple tumor types [5]. - The company is also developing SLS009, a differentiated small molecule CDK9 inhibitor, which has shown a high response rate in AML patients with unfavorable prognostic factors, including ASXL1 mutation [5].

Core Insights - SELLAS Life Sciences Group has successfully met all primary endpoints in its Phase 2 trial of SLS009 (tambiciclib) for relapsed/refractory acute myeloid leukemia (r/r AML) [1][3][4] Trial Design and Objectives - The Phase 2 trial was an open-label, single-arm, multi-center study assessing the safety, tolerability, and efficacy of SLS009 in combination with venetoclax and azacitidine at two dose levels: 45 mg and 60 mg [2] - The trial aimed for a target overall response rate (ORR) of at least 20% and a median survival of at least 3 months [2] Efficacy Results - The trial exceeded the target ORR of 20%, achieving an ORR of 44% among AML MR patients at the optimal 30 mg twice a week (BIW) dose and 50% in ASXL1-mutated AML MR patients [6][12] - Median overall survival (mOS) was reported at 8.9 months for AML MR patients and 8.8 months for those refractory to venetoclax-based regimens, significantly surpassing historical benchmarks of 2.4 months [6][12] Safety Profile - SLS009 was well tolerated, with no dose-limiting toxicities observed across all treatment arms, validating its safety profile [9][12] Future Development Plans - Based on the positive Phase 2 results, the company plans to advance SLS009 into a randomized trial targeting newly diagnosed AML populations, with enrollment expected to begin by Q1 2026 [3][10][13] - The upcoming trial will include two cohorts: one for patients unlikely to benefit from standard therapy based on molecular profiling and another for patients showing early resistance to treatment [13][14] Industry Context - The results from the trial highlight a significant advancement in treatment options for patients with r/r AML, addressing a critical unmet medical need in this patient population [11][12]

Core Insights - SELLAS Life Sciences Group, Inc. has appointed Dr. Linghua Wang to its Scientific Advisory Board, enhancing its expertise in cancer research and translational science [1][2] - The company aims to leverage Dr. Wang's experience in cancer immunogenomics and computational biology to advance its scientific and clinical strategy during a critical growth phase [2][3] Company Overview - SELLAS is a late-stage clinical biopharmaceutical company focused on developing novel therapeutics for various cancer indications [4] - The lead product candidate, GPS, targets the WT1 protein found in multiple tumor types and has potential as both a monotherapy and in combination with other therapies [4] - The company is also developing SLS009 (tambiciclib), a differentiated small molecule CDK9 inhibitor, which has shown a high response rate in AML patients with unfavorable prognostic factors [4]

Company Overview - SELLAS Life Sciences Group, Inc. is a late-stage clinical biopharmaceutical company focused on developing novel therapies for various cancer indications [5] - The lead product candidate, GPS, targets the WT1 protein and has potential applications in both hematologic malignancies and solid tumors [5] - The company is also developing SLS009 (tambiciclib), a differentiated small molecule CDK9 inhibitor with reduced toxicity and increased potency compared to existing CDK9 inhibitors [5] Index Inclusion - SELLAS will be added to the Russell 3000 and Russell 2000 Indexes, effective after the U.S. market close on June 27, 2025, as part of the 2025 Russell indexes annual reconstitution [1] - Membership in these indexes lasts for one year and results in automatic inclusion in appropriate growth and value style indexes, enhancing visibility with institutional investors [3] Strategic Importance - The inclusion in the Russell indexes is seen as a significant corporate milestone, reflecting the company's progress in advancing its pipeline and building long-term shareholder value [4] - The company is approaching the readout of full topline Phase 2 data of SLS009 in acute myeloid leukemia (AML) and the final analysis of the Phase 3 pivotal REGAL trial of GPS in AML [4]

Core Insights - The appointment of Drs. Philip C. Amrein and Alex Kentsis to the Scientific Advisory Board (SAB) enhances the strategic guidance for SELLAS Life Sciences as it approaches significant milestones in its therapeutic pipeline [1][2] - The company is expecting full topline Phase 2 data for SLS009 in acute myeloid leukemia (AML) and the final analysis of the Phase 3 REGAL trial of GPS in AML within the year [2] Company Overview - SELLAS Life Sciences Group, Inc. is a late-stage clinical biopharmaceutical company focused on developing novel therapies for various cancer indications [5] - The lead product candidate, GPS, targets the WT1 protein found in multiple tumor types and has potential as both a monotherapy and in combination with other therapies [5] - SLS009 (tambiciclib) is a differentiated small molecule CDK9 inhibitor with reduced toxicity and increased potency compared to existing CDK9 inhibitors, showing a high response rate in AML patients with unfavorable prognostic factors [5] New Advisory Board Members - Dr. Philip C. Amrein is an Assistant Professor of Medicine at Harvard Medical School, specializing in leukemia and leading numerous clinical trials [3] - Dr. Alex Kentsis is the founding Director of the MSK Tow Center for Developmental Oncology and focuses on improving understanding of blood and solid tumors, particularly in pediatric oncology [4]

Core Insights - SELLAS Life Sciences Group, Inc. announced preclinical efficacy of SLS009 (tambiciclib) in ASXL1 mutated colorectal cancer, highlighting its potential as a targeted therapy [1][2] - The presentation at the 2025 ASCO Annual Meeting emphasized the selective targeting of ASXL1-driven tumors, suggesting ASXL1 mutation status could serve as a biomarker for treatment response [2][3] Company Overview - SELLAS is a late-stage clinical biopharmaceutical company focused on developing novel therapies for various cancer indications, with SLS009 being a key candidate [4][5] - The company is also developing GPS, a product licensed from Sloan Kettering Cancer Center, aimed at addressing a broad spectrum of hematologic malignancies and solid tumors [5] Clinical Study Details - SLS009 is currently undergoing a Phase 2 open-label, single-arm, multi-center study to evaluate its safety, tolerability, and efficacy in combination with venetoclax and azacitidine for AML patients with ASXL1 mutations [3] - Initial clinical safety and efficacy data are available, and the study aims to identify biomarkers for patient selection [3] Efficacy Data - In a panel of ASXL1 mutant cell lines, 50% showed an IC50 <100 nM, indicating strong anti-proliferative activity, compared to 0% in ASXL1 wild-type lines [4] - Among cell lines with ASXL1 frameshift mutations, 75% responded with IC50 <100 nM, demonstrating a steep dose-response curve [4]