Moleculin CEO, Walter Klemp, Highlights Positive Preliminary MIRACLE Trial Results in Virtual Investor "What This Means" Segment

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HOUSTON, July 06, 2026 (GLOBE NEWSWIRE) -- Moleculin Biotech, Inc., (Nasdaq: MBRX) ("Moleculin" or the "Company"), today announced that Walter Klemp, Chairman and Chief Executive Officer of Moleculin, participated in a Virtual Investor "What This Means" segment. For the segment, Chairman and CEO Wally Klemp discusses the positive preliminary unblinded efficacy results from the first 45 patients enrolled in Part A of the pivotal Phase 2/3 MIRACLE trial evaluating Annamycin in relapsed or refractory acute myeloid leukemia (R/R AML). During the conversation, Mr. Klemp provides his perspective on the significance of the early efficacy trends observed across both Annamycin treatment arms, summarizes the key data, and discusses the commercial opportunity, including insights from the Company's recent market research assessing the potential addressable market for Annamycin if approved. The segment is now available for on-demand viewing here. 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 known as naxtarubicin), is a highly efficacious and well tolerated anthracycline designed to avoid multidrug resistance mechanisms and to lack the cardiotoxicity common with currently prescribed anthracyclines. Annamycin is currently in development for the treatment of relapsed or refractory acute myeloid leukemia (AML) and soft tissue sarcoma (STS) lung metastases. The Company has begun the MIRACLE (Moleculin R/R AML AnnAraC Clinical Evaluation) Trial (MB-108), a pivotal, adaptive design, multi-center, randomized, double-blind, placebo-controlled Phase 2/3 trial evaluating Annamycin in combination with cytarabine, together referred to as AnnAraC (the combination of Annamycin and cytarabine, also referred to as "Ara-C") for the treatment of relapsed or refractory acute myeloid leukemia. Following a successful Phase 1B/2 study (MB-106), with input from the FDA, the Company believes it has substantially de-risked the development pathway towards a potential approval for Annamycin for the treatment of AML. This study remains subject to appropriate future filings with potential additional feedback from the FDA and their foreign equivalents. Additionally, the Company is devel...

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