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Moleculin Biotech, Inc. reports developments as a clinical-stage pharmaceutical company advancing drug candidates for hard-to-treat tumors and viruses. Its lead program is Annamycin, also known as naxtarubicin, a next-generation anthracycline designed to avoid cardiotoxicity and multidrug resistance, with development focused on relapsed or refractory acute myeloid leukemia and soft tissue sarcoma lung metastases.
Recurring news covers Annamycin clinical and preclinical data, the MIRACLE study of Annamycin in combination with cytarabine, oncology conference presentations, intellectual-property protection for liposomal Annamycin, and corporate financial updates. Additional pipeline coverage includes WP1066, an immune/transcription modulator targeting p-STAT3 and other oncogenic transcription factors, and WP1122, an antimetabolite program for pathogenic viruses and cancer indications.
Moleculin (Nasdaq: MBRX) released a new CEO Corner segment on April 7, 2026 featuring CEO Walter Klemp discussing Annamycin’s non-cardiotoxic safety profile. The company says Annamycin avoided cardiac damage in preclinical and clinical studies, which could broaden options for relapsed/refractory AML and advanced solid tumor patients.
Mr. Klemp noted potential benefits for physicians, and favorable regulatory and commercial implications as the company advances the MIRACLE Study.
Moleculin (Nasdaq: MBRX) announced enrollment of the 45th subject in its global Phase 2B/3 MIRACLE trial of Annamycin plus cytarabine (AnnAraC) for relapsed/refractory AML, triggering preparations for an interim unblinding expected mid-2026. Preliminary blinded results among the first 30 patients showed a 40% composite complete remission rate (30% CR; 10% CR with partial recovery), with ~35% having failed prior venetoclax therapy. The protocol calls for early unblinding at 45 subjects and full Part A completion at 90 subjects, supporting dose selection and a potential accelerated approval pathway based on the CR endpoint.
Moleculin (Nasdaq: MBRX) reported full-year 2025 results and a clinical update for Annamycin. The pivotal MIRACLE trial delivered a preliminary blinded CRc of 40% in the first 30 Annamycin-treated subjects (CR 30%, CRh 10%), and an interim unblinding of 45 subjects is on track for mid-2026.
Financially, R&D expense was $15.9M in 2025, cash and equivalents were $8.9M at year-end, and management expects funding into the third quarter of 2026 including $8.3M raised in Q1 2026.
Moleculin (Nasdaq: MBRX) will present at the 38th Annual ROTH Conference in Dana Point, CA, participating in a fireside chat on March 24, 2026, 12:00–12:25 PM PT.
Presenters include Walter Klemp, Founder, President, Chairman & CEO, and Jon Foster, EVP & CFO. Investors may register or arrange one-on-one meetings through ROTH.
Moleculin (Nasdaq: MBRX) released a new CEO Corner segment featuring CEO Walter Klemp discussing progress in the pivotal MIRACLE adaptive Phase 3 study of Annamycin plus cytarabine (AnnAraC) for relapsed or refractory acute myeloid leukemia.
The trial was designed with input from the U.S. FDA and begins with an initial cohort of 45 patients; after treatment of these patients an interim unblinding will assess safety and efficacy to inform the regulatory path. Enrollment and dosing are progressing as planned, with completion of treatment for the first 45 patients expected in the near term. The program builds on earlier MB-106 results where AnnAraC reportedly exceeded historical overall survival benchmarks.
Moleculin (Nasdaq: MBRX) announced agreements for immediate exercise of outstanding warrants to purchase up to 2,122,652 shares at an exercise price of $3.90 per share, producing approximately $8.3 million gross proceeds before fees.
The company will issue new unregistered warrants exercisable for up to 6,367,956 shares, subject to shareholder approval, with a five-year term from approval. The transaction is expected to close on or about February 20, 2026, and net proceeds will be used for working capital and general corporate purposes.
Moleculin (Nasdaq: MBRX) reported a preliminary blinded CRc rate of 40% (CR 30%, CRh 10%) in the first 30 subjects of the Phase 2B/3 MIRACLE trial of Annamycin plus cytarabine for R/R AML.
The company has treated 35 subjects, targets unblinding after 45 subjects in Q1 2026, and expects first-arm unblinding in late Q2 2026; safety data to date show absence of cardiotoxicity.
Moleculin (Nasdaq: MBRX) announced a Japan Patent Office notice of allowance for Patent Application No. 2021-577862 covering methods to reconstitute liposomal Annamycin for intravenous use. A patent is expected to issue in the coming months.
The allowed claims focus on controlled-temperature reconstitution to ensure dosing consistency, stability, and handling. This allowance complements U.S. and European patent coverage and supports ongoing Phase 3 development for relapsed or refractory acute myeloid leukemia. Annamycin holds multiple orphan and Fast Track designations.
Moleculin (Nasdaq: MBRX) launched CEO Corner on Feb. 13, 2026, a new video and engagement platform featuring CEO Walter Klemp.
The platform aims to provide investors with added perspective on corporate developments, clinical trial progress and strategic initiatives, and accepts questions and topic submissions for future segments.
Moleculin (Nasdaq: MBRX) will present a live video webcast as part of the Webull Financial Corporate Connect Webinar Series on Wednesday, February 11, 2026 at 1:20 PM EST. Walter Klemp, Founder, President, CEO and Chairman, is the scheduled presenter. Registration is available via the company's provided link.