Cytarabine

Completion of treatment for the first 45 patients on pace for Q1 2026 with initial unblinded data thereafter; blinded response activity tracking within expected range HOUSTON, Nov. 13, 2025 (GLOBE NEWSWIRE) -- Moleculin Biotech, Inc., (Nasdaq: MBRX) (“Moleculin” or the “Company”), today provided an enrollment update with 60% of the target number of subjects for the first planned interim unblinding of data having consented to its pivotal Phase 2B/3 “MIRACLE” study of Annamycin in combination with cytarabine for the treatment of adult patients with acute myeloid leukemia (AML) who are refractory to or relapsed (R/R) after induction therapy (R/R AML). The targeted number for the first unblinding of data is 45 subjects. Additional subjects continued to be identified by site investigators. This update is as of November 4, 2025, as identification and recruitment are ongoing. The Company expects to complete treatment of the first 45 subjects in the first quarter of 2026 with the initial unblinding of data thereafter. Walter Klemp, Chairman and CEO of Moleculin, commented, “We’re very encouraged by the strong momentum in recruitment and enthusiasm I’ve personally heard from investigators around Europe and the US. To date, we are seeing blinded response activity tracking within our expected range, based on historical responses of the trial arm equivalents. Although enrollment at some sites in Europe has been impacted by bed shortages, the MIRACLE study continues to progress as planned. As we move toward our first unblinding milestone, we are excited about Annamycin’s potential to fill a major gap in AML treatment. We believe we’re well on our way to determining if Annamycin has the potential to offer a much-needed, safer, and more effective option for patients facing this devastating disease.” MIRACLE Trial Progress and Next Steps The MIRACLE study (derived from Moleculin R/R AML AnnAraC Clinical Evaluation) is a Phase 2B/3, global multi-center, randomized, double-blind, placebo-controlled, adaptive designed clinical trial whereby data from the 2B (Part A) portion will be combined with the Phase 3 (Part B) portion for purposes of measuring its primary efficacy endpoint. The protocol for the MIRACLE trial allows for the unblinding of preliminary primary efficacy data (Complete Remission or CR) and safety/tolerability of the three arms at 45 subjects, in addition to the conclusion of Part A (at 75 to 90 subjects). The first early unblinding will yield 30 subjects treated with Annamycin (190mg/m2 and 230 mg/m2) in combination with HiDAC and 15 subjects treated with just HiDAC plus placebo. The Company expects to reach the recruitment and treatment of the first 45 subjects in the first quarter of 2026 with unblinding thereafter, in addition to the second unblinding, which is expected in the first half of 2026. This accelerated estimated timeline is due in part to the positive response the Company received in meetings during December with potential investigators regarding recruitment for the trial. The currently enrolled subjects are from sites across five countries, providing a diverse base of subjects. With the upcoming holidays in addition to unexpected bed shortages at certain EU sites, the Company expects treatment of enrolled subjects to slow, pushing the completion of the first 45 subjects into the first quarter of 2026. Such data will be audited, locked, and reviewed prior to release. The release of the unblinded data will be thereafter. For more information about the MIRACLE trial, visit clinicaltrials.gov and reference identifier NCT06788756. Additionally, the clinical trial in the EU is on euclinicaltrials.eu and the reference identifier there is 2024-518359-47-00. Annamycin, also known by its non-proprietary name of naxtarubicin, currently has Fast Track Status and Orphan Drug Designation from the FDA for the treatment of relapsed or refractory acute myeloid leukemia, in addition to Orphan Drug Designation for the treatment of soft tissue sarcoma. Annamycin also benefits from composition of matter patent protection through 2040 with the potential to extend that protection as far as 2045. Furthermore, Annamycin has Orphan Drug Designation for the treatment of relapsed or refractory acute myeloid leukemia from the EMA. 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, is a next-generation 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 Phase 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”) and, 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 developing WP1066, an Immune/Transcription Modulator capable of inhibiting p-STAT3 and other oncogenic transcription factors while also stimulating a natural immune response, targeting brain tumors, pancreatic and other cancers. Moleculin also has in its pipeline a portfolio of antimetabolites, including WP1122 for the potential treatment of pathogenic viruses, as well as certain cancer indications. For more information about the Company, please visit www.moleculin.com and connect on X, LinkedIn and Facebook. Forward-Looking StatementsSome of the statements in this release are forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, Section 21E of the Securities Exchange Act of 1934 and the Private Securities Litigation Reform Act of 1995, which involve risks and uncertainties. Forward-looking statements in this press release include, without limitation, statements regarding the continued recruitment, treatment, and receipt of the unblinded data for the first 45 subjects of the MIRACLE clinical trial as described. Moleculin will require significant additional financing, for which the Company has no commitments, in order to conduct its clinical trials as described in this press release, and the milestones described in this press release assume the Company’s ability to secure such financing on a timely basis. Although Moleculin believes that the expectations reflected in such forward-looking statements are reasonable as of the date made, expectations may prove to have been materially different from the results expressed or implied by such forward-looking statements. Moleculin has attempted to identify forward-looking statements by terminology including ‘believes,’ ‘estimates,’ ‘anticipates,’ ‘expects,’ ‘plans,’ ‘projects,’ ‘intends,’ ‘potential,’ ‘may,’ ‘could,’ ‘might,’ ‘will,’ ‘should,’ ‘approximately’ or other words that convey uncertainty of future events or outcomes to identify these forward-looking statements. These statements are only predictions and involve known and unknown risks, uncertainties, and other factors, including those discussed under Item 1A. “Risk Factors” in our most recently filed Form 10-K filed with the Securities and Exchange Commission (SEC) and updated from time to time in our Form 10-Q filings and in our other public filings with the SEC. Any forward-looking statements contained in this release speak only as of its date. We undertake no obligation to update any forward-looking statements contained in this release to reflect events or circumstances occurring after its date or to reflect the occurrence of unanticipated events. Investor Contact: JTC Team, LLCJenene Thomas(908) 824-0775MBRX@jtcir.com

– New Drug Application for ziftomenib in adults with R/R NPM1-m AML remains under FDA Priority Review, with a PDUFA target action date of November 30, 2025 – – KOMET 017 Phase 3 trials to evaluate ziftomenib in combination with intensive and non-intensive chemotherapy in frontline AML are accelerating; ziftomenib being investigated in settings representing more than 50% of AML patients – – Two oral presentations at 2025 ASH Annual Meeting on ziftomenib in combination with venetoclax / azacitidine chemotherapy in frontline and R/R NPM1-m AML – – Clinical data at ESMO 2025 Congress highlight promise of second strategic program – FTIs darlifarnib and tipifarnib show promising safety profile and clinical activity with targeted therapies in solid tumors – – $609.7 million in pro forma cash, together with anticipated collaboration payments, expected to support ziftomenib AML program through topline results in KOMET-017 – – Management to host webcast and conference call today at 8:00 a.m. ET – SAN DIEGO , Nov. 04, 2025 (GLOBE NEWSWIRE) -- Kura Oncology, Inc. (Nasdaq: KURA), a clinical-stage biopharmaceutical company committed to realizing the promise of precision medicines for the treatment of cancer, today reported third quarter 2025 financial results and provided a corporate update. “Our momentum is accelerating across the ziftomenib program and our broader precision oncology pipeline,” said Troy Wilson , Ph.D., J.D., President and Chief Executive Officer. “With the initiation of the pivotal KOMET-017 Phase 3 trials, we are executing a robust, focused development strategy to unlock ziftomenib’s best-in-class potential across the continuum of unmet need in AML. Bolstered by a strong balance sheet and our productive partnership with Kyowa Kirin, we are well positioned to advance ziftomenib toward commercialization, accelerate our frontline Phase 3 trials and create enduring value across our pipeline for patients and other key stakeholders.” Recent Highlights In September 2025 , we announced the first patient was dosed in the Phase 3 KOMET-017 trial of ziftomenib in frontline AML (NCT07007312). KOMET-017 comprises two global, randomized, double-blind, placebo-controlled trials to evaluate ziftomenib in combination with both intensive and non-intensive chemotherapy regimens in patients with newly diagnosed NPM1-m or KMT2A-rearranged (KMT2A-r) AML. In October 2025 , we announced the first patient was dosed in the FLT3 inhibitor cohort of the KOMET-007 clinical trial (NCT05735184). The cohort evaluates ziftomenib combined with the FDA-approved FLT3 inhibitor, quizartinib, plus cytarabine and daunorubicin (7+3) induction chemotherapy in patients with newly diagnosed AML harboring FLT3-ITD / NPM1 co-mutations. In September 2025 , the Journal of Clinical Oncolog y published the full results from the pivotal KOMET-001 clinical trial (NCT04067336) evaluating ziftomenib as a monotherapy in adult patients with R/R NPM1-m AML. (Reprint) Two abstracts featuring clinical data from ziftomenib in combination with venetoclax / azacitidine (ven/aza) chemotherapy in patients with newly diagnosed and R/R NPM1-m or KMT2A-r AML were accepted for oral presentation at the 67th Annual Meeting of the American Society of Hematology (ASH) to be held in December 2025 . (Abstract ID 764; Abstract ID 766) In October 2025 , preliminary clinical data were presented at ESMO 2025, highlighting the potential of Kura’s farnesyl transferase inhibitors, darlifarnib (KO-2806) and tipifarnib, to enhance the anti-tumor activity of PI3Ka inhibitors, KRAS inhibitors and antiangiogenic tyrosine kinase inhibitors across a range of diverse tumor types by addressing a common resistance pathway. Data from the FIT-001 Phase 1 trial evaluating darlifarnib and cabozantinib in patients with renal cell carcinoma (RCC) reflect a manageable safety profile across multiple dose levels of each agent, including at the full label dose of cabozantinib. Antitumor activity was observed across all dose combinations tested, including in patients with prior exposure to cabozantinib. The objective response rate (ORR) was 33-50% in ccRCC, and 17-50% in patients with prior cabozantinib exposure. (Poster) Data from the KURRENT-HN trial evaluating tipifarnib and alpelisib in patients with PIK3CA-dependent HNSCC also reflect a manageable safety profile. An ORR of 47% was observed at a dose of tipifarnib 1200 mg/day and alpelisib 250 mg/day. Robust antitumor activity was observed in a heavily pretreated patient population where clinical benefit is not expected from either alpelisib or tipifarnib as monotherapy. (Poster) In October and November 2025 , Kura received two $30 million milestone payments under its agreement with Kyowa Kirin in connection with first patient dosing in the pivotal KOMET-017 clinical trial of ziftomenib with intensive and non-intensive chemotherapy in patients with frontline AML. Data from the FIT-001 Phase 1 trial evaluating darlifarnib and cabozantinib in patients with renal cell carcinoma (RCC) reflect a manageable safety profile across multiple dose levels of each agent, including at the full label dose of cabozantinib. Antitumor activity was observed across all dose combinations tested, including in patients with prior exposure to cabozantinib. The objective response rate (ORR) was 33-50% in ccRCC, and 17-50% in patients with prior cabozantinib exposure. (Poster) Data from the KURRENT-HN trial evaluating tipifarnib and alpelisib in patients with PIK3CA-dependent HNSCC also reflect a manageable safety profile. An ORR of 47% was observed at a dose of tipifarnib 1200 mg/day and alpelisib 250 mg/day. Robust antitumor activity was observed in a heavily pretreated patient population where clinical benefit is not expected from either alpelisib or tipifarnib as monotherapy. (Poster) Forecasted Milestones Continued regulatory interactions with the FDA ahead of the November 30, 2025 PDUFA target action date for ziftomenib as a monotherapy for adult patients with relapsed or refractory NPM1-m AML. Present preliminary clinical data in newly diagnosed NPM1-m AML and updated clinical data in R/R NPM1-m and KMT2A-r AML from KOMET-007 cohorts evaluating ziftomenib in combination with ven/aza at ASH Annual Meeting to be held in December 2025 . Present preliminary data from the KOMET-008 cohort evaluating ziftomenib in combination with the FLT3 inhibitor gilteritinib in patients with R/R NPM1-m AML in 2026. Initiate FIT-001 Phase 1b expansion cohorts of darlifarnib and cabozantinib in patients with advanced RCC in the first half of 2026. Present updated dose-escalation data from the combination of darlifarnib and cabozantinib in patients with advanced RCC in 2026. Present preliminary clinical data from the combination of darlifarnib and adagrasib in patients with KRASG12C-mutated solid tumor indications in 2026. Financial Results Collaboration revenue from our Kyowa Kirin partnership for the third quarter of 2025 was $20.8 million , compared to no revenue for the third quarter of 2024. Research and development expenses for the third quarter of 2025 were $67.9 million , compared to $41.7 million for the third quarter of 2024. General and administrative expenses for the third quarter of 2025 were $32.8 million , compared to $18.2 million for the third quarter of 2024. Net loss for the third quarter of 2025 was $74.1 million , compared to a net loss of $54.4 million for the third quarter of 2024. Net loss for the third quarter included non-cash share-based compensation expense of $11.0 million , compared to $8.3 million for the same period in 2024. As adjusted for the two $30 million clinical trial milestone payments earned under our collaboration agreement with Kyowa Kirin, Kura had, on a pro forma basis, cash, cash equivalents and short-term investments of $609.7 million as of September 30, 2025 . Based on our current plans, we believe that our cash, cash equivalents and short-term investments as of September 30, 2025 will be sufficient to enable us to fund our current operating expenses into 2027, and, combined with anticipated funding under our collaboration agreement with Kyowa Kirin, should support our ziftomenib AML program through topline results from KOMET-017. Conference Call and Webcast - Third Quarter 2025 Financial Results Kura’s management will host a webcast and conference call at 8:00 a.m. ET / 5:00 a.m. PT today, November 4, 2025 , to discuss the financial results for the third quarter of 2025 and to provide a corporate update. A live webcast and archived replay of the event will be available here or online from the investor relations section of the Company’s website at www.kuraoncology.com. Conference Call and Webcast – ASH 2025 Annual Meeting Kura plans to host a virtual analyst and investor event at 12:30 p.m. ET / 9:30 a.m. PT on Monday, December 8, 2025 , to discuss the Company’s presentations from ziftomenib in combination with ven/aza chemotherapy in patients with newly diagnosed and R/R NPM1-m or KMT2A-r AML at the 67th Annual Meeting of the American Society of Hematology . A live webcast and archived replay of the event will be available online from the investor relations section of the Company’s website at www.kuraoncology.com. About Kura Oncology Kura Oncology is a clinical-stage biopharmaceutical company committed to realizing the promise of precision medicines for the treatment of cancer. The Company’s pipeline of small molecule drug candidates is designed to target cancer signaling pathways and address high-need hematologic malignancies and solid tumors. Kura is developing ziftomenib, a menin inhibitor targeting certain genetic drivers of acute myeloid leukemias, and it continues to pioneer advancements in menin inhibition for acute leukemias and solid tumors and in farnesyl transferase inhibition to address mechanisms of adaptive and innate resistance in the treatment of solid tumors. For additional information, please visit the Kura website at https://kuraoncology.com/ and follow us on X and LinkedIn. Forward-Looking Statements This news release contains certain forward-looking statements that involve risks and uncertainties that could cause actual results to be materially different from historical results or from any future results expressed or implied by such forward-looking statements. Such forward-looking statements include statements regarding, among other things, ziftomenib’s best-in-class potential across the continuum of unmet need in AML; Kura’s ability to advance ziftomenib toward commercialization, accelerate our frontline Phase 3 trials and create enduring value for patients and other stakeholders; the potential duration of FDA’s review of the NDA; the potential FDA approval of product candidates; the success and impact of interactions with the FDA; continued regulatory interactions with the FDA; the efficacy, safety and therapeutic potential of Kura’s product candidates, ziftomenib, darlifarnib and tipifarnib; the expected timing of clinical trials; the expected timing and presentation of results and data from clinical trials; the strength of Kura’s balance sheet and the sufficiency of cash, cash equivalents and short-term investments to fund Kura’s current operating expenses into 2027 and, combined with anticipated funding under our collaboration agreement with Kyowa Kirin, to support Kura’s ziftomenib AML program through topline results from KOMET-017. Factors that may cause actual results to differ materially include risks associated with the commercialization of ziftomenib, the risk that compounds that appeared promising in early research or clinical trials do not demonstrate safety and/or efficacy in later preclinical studies or clinical trials, uncertainties associated with performing clinical trials, regulatory filings, and other interactions with regulatory bodies, risks associated with reliance on third parties to successfully conduct clinical trials, the risks associated with reliance on outside financing to meet capital requirements, the risk that the collaboration with Kyowa Kirin is unsuccessful, and other risks associated with the process of discovering, developing and commercializing drugs that are safe and effective for use as human therapeutics, and in the endeavor of building a business around such drugs. You are urged to consider statements that include the words “may,” “will,” “would,” “could,” “should,” “believes,” “estimates,” “projects,” “promise,” “potential,” “expects,” “plans,” “anticipates,” “intends,” “continues,” “designed,” “goal,” or the negative of those words or other comparable words to be uncertain and forward-looking. For a further list and description of the risks and uncertainties the Company faces, please refer to the Company's periodic and other filings with the Securities and Exchange Commission, which are available at www.sec.gov. Such forward-looking statements are current only as of the date they are made, and Kura assumes no obligation to update any forward-looking statements, whether as a result of new information, future events or otherwise. FLT3, Fms-like tyrosine kinase 3; HNSCC, head and neck squamous cell carcinoma; KMT2A, lysine methyltransferase 2A; NPM1, nucleophosmin 1; R/R, relapsed / refractory; ven/aza, venetoclax / azacitidine. Contacts Investors and media: Greg Mann 858-987-4046gmann@kuraoncology.com Source: Kura Oncology, Inc.