Tuesday, October 01, 2024
Onconova Therapeutics is a clinical-stage biopharmaceutical company focused on discovering and developing novel products for patients with cancer. The Company has proprietary targeted anti-cancer agents designed to disrupt specific cellular pathways that are important for cancer cell proliferation. Onconova’s novel, proprietary multi-kinase inhibitor narazaciclib (formerly ON 123300) is being evaluated in a combination trial with estrogen blockade in advanced endometrial cancer. Based on preclinical and clinical studies of CDK 4/6 inhibitors, Onconova is also evaluating opportunities for combination studies with narazaciclib in additional indications. Onconova’s product candidate rigosertib is being studied in multiple investigator-sponsored studies. These studies include a dose-escalation and expansion Phase 1/2a study of oral rigosertib in combination with nivolumab in patients with KRAS+ non-small cell lung cancer, a Phase 2 program evaluating rigosertib monotherapy in advanced squamous cell carcinoma complicating recessive dystrophic epidermolysis bullosa (RDEB-associated SCC), and a Phase 2 trial evaluating rigosertib in combination with pembrolizumab in patients with metastatic melanoma.
Robert LeBoyer, Senior Vice President, Equity Research Analyst, Biotechnology, Noble Capital Markets, Inc.
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Phase 1 Topline Data Shows Safety and Tolerability. Traws Pharma announced results from its Phase 1 trial testing ratutrelvir, its oral protease inhibitor for COVID-19. The trial was designed to determine pharmacokinetics and safety, with results showing consistent plasma levels within the expected range with no adverse events. A Phase 2a trial is being planned to begin in 1H2025.
Ratutrelvir Could Become A Category-Leading Drug. Ratutrelvir is an inhibitor of the SARS-CoV-2 Main protease (Mpro or 3CL protease). It has demonstrated in vitro activity against the original viral strain and numerous variants, including delta and omicron. Ratutrelvir does not require co-administration of ritonavir as a metabolic inhibitor and avoids the drug-drug interactions and potential side effects. In comparison, Pfizer’s Paxlovid is a combination of its Mpro inhibitor, nirmatrelvir, with ritonavir as a metabolic (cytochrome P450) inhibitor.
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