Moleculin Highlights Abstract Accepted for Poster Presentation at the 2026 ASCO Annual Meeting Highlighting Cardiac Safety Data for Annamycin

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HOUSTON, May 21, 2026 (GLOBE NEWSWIRE) -- Moleculin Biotech, Inc., (Nasdaq: MBRX) (“Moleculin” or the “Company”), today announced that an abstract featuring pooled cardiac safety data for its lead drug candidate Annamycin (also known as “L-Annamycin” or “naxtarubicin”), has been accepted for poster presentation at the 2026 American Society of Clinical Oncology (ASCO) Annual Meeting, taking place May 29 – June 2, 2026, in Chicago, Illinois. Access the abstract here. The abstract, titled “Cardiac safety of L-annamycin at high cumulative anthracycline exposure: Pooled analysis,” will be presented in a poster session focused on Symptom Science and Palliative Care. Presentation Details: The abstract presents pooled cardiac safety analyses from sponsor- and investigator-initiated clinical trials evaluating Annamycin (also known as “L-Annamycin” or “naxtarubicin”) in patients with acute myeloid leukemia (AML) and soft tissue sarcoma. Key findings include: “Acceptance of these findings at ASCO highlights the growing body of evidence supporting the differentiated safety profile of Annamycin,” said Walter Klemp, Chairman and CEO of Moleculin. “These data continue to support the potential for Annamycin to provide effective anthracycline therapy without the traditional cumulative dose limitations associated with cardiotoxicity. We believe these findings further strengthen the rationale for our ongoing pivotal Phase 2b/3 MIRACLE trial in AML patients.” Anthracyclines remain among the most widely used chemotherapy agents but are limited by cumulative dose-dependent cardiotoxicity. Annamycin is designed to avoid multidrug resistance mechanisms while potentially eliminating the cardiotoxicity commonly associated with currently prescribed anthracyclines. Previously reported results from the Company’s Phase 1b/2 study evaluating Annamycin in combination with cytarabine as second-line therapy in AML demonstrated: The ASCO Annual Meeting is one of the largest and most influential gatherings of oncology professionals worldwide, featuring cutting-edge research and advances in cancer treatment. For more information, please visit asco.org. About Moleculin Biotech, Inc. Moleculin Biotech, Inc. is a Phase 3 clinical stage pharmaceutical company advancing a pipeline of therapeutic candidates addressing hard-to-treat tumors and viruses. The Company’s lead program, Annamycin (also kn...

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