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Onconova Therapeutics Reports First Quarter 2023 Financial Results and Provides Business Update
Conference call and live webcast at 4:30 p.m. ET today NEWTOWN, Pa., May 15, 2023 (GLOBE NEWSWIRE) -- Onconova Therapeutics, Inc. (NASDAQ: ONTX),

About this update from Traws Pharma, Inc.
[{"type":"text","content":"Conference call and live webcast at 4:30 p.m. ET today\nNEWTOWN, Pa., May 15, 2023 (GLOBE NEWSWIRE) -- Onconova Therapeutics, Inc. (NASDAQ: ONTX), (“Onconova”), a clinical-stage biopharmaceutical company focused on discovering and developing novel products for patients with cancer, today announced financial results for the three months ended March 31, 2023, and provided a business update. Highlights for the first quarter of 2023 and recent weeks include: The first participant was dosed in the Phase 1/2a trial of narazaciclib combined with letrozole in recurrent metastatic low-grade endometrioid endometrial cancer (LGEEC). The trial remains on track for a preliminary data readout from its Phase 1 portion in the fourth quarter of this year.Safety data from the Phase 1 solid tumor trial evaluating a continuous daily dosing schedule of narazaciclib continue to be encouraging with the maximum tolerated dose awaiting confirmation. The trial has enrolled patients in its sixth dose escalation cohort, which evaluates a 240 mg oral dose of narazaciclib. Two posters presented at the American Association for Cancer Research (AACR) Annual Meeting featured the results of preclinical studies of narazaciclib. Data showed that, in addition to inhibiting kinases such as CDK 4 and CDK 6, narazaciclib treatment led to the degradation of other kinases not targeted by the FDA-approved CDK 4/6 inhibitor palbociclib. These kinases included BUB1, the overexpression of which was shown to be associated with poor prognosis in breast cancer and uterine corpus endometrial carcinomas. In addition, data presented showed that narazaciclib’s activity in several preclinical cancer models compared favorably to that of FDA-approved CDK 4/6 inhibitors. The second of two evaluable participants in the investigator-sponsored Phase 2 program evaluating rigosertib monotherapy in advanced squamous cell carcinoma complicating recessive dystrophic epidermolysis bullosa (RDEB-associated SCC) achieved a complete clinical response of all cancerous skin lesions following four treatment cycles of oral rigosertib. Thus, both patients evaluable for response achieved complete cutaneous remissions (CCR). This data and the rational for the study of rigosertib in RDEB-SCC was presented at the recent meeting of the Society of Investigative Dermatology Meeting in Osaka, Japan. Onconova ...