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Traws Pharma Announces Positive Topline Phase 1 Results for COVID Candidate, Ratutrelvir, an Oral Mpro Inhibitor
Ratutrelvir was well-tolerated for 10 days and achieved consistent plasma levels in the predicted therapeutic window, without the need for co-administration
About this update from Traws Pharma, Inc.
[{"type":"text","content":"Ratutrelvir was well-tolerated for 10 days and achieved consistent plasma levels in the predicted therapeutic window, without the need for co-administration of ritonavir Phase 2a study expected to begin in H1 2025 in patients with COVID Improving COVID care is an ongoing need, with approximately 50,000 US deaths in 2023 NEWTOWN, Pa., Sept. 30, 2024 (GLOBE NEWSWIRE) -- Traws Pharma, Inc. (NASDAQ: TRAW) (“Traws Pharma”, “Traws” or “the Company”), a clinical-stage biopharmaceutical company developing potential oral small molecule therapies for the treatment of respiratory viral diseases, today announced positive topline Phase 1 results for its potential best-in-class COVID (SARS-CoV-2) candidate, ratutrelvir, an oral inhibitor of the Main protease (Mpro). “Topline data indicate that administration of ratutrelvir, our product candidate for COVID, as monotherapy, for 10 days to healthy volunteers, showed no treatment related adverse events and demonstrated consistent plasma drug levels in the predicted therapeutic window. We are especially pleased by ratutrelvir’s ability to achieve plasma concentrations that are considerably above the EC90 against a comprehensive panel of SARS-CoV-2 viruses, without the need for ritonavir co-administration that can be a source of drug-drug interactions and potential severe side effects,” said Werner Cautreels, PhD, Chief Executive Officer of Traws Pharma. “These data provide us with further indication that ratutrelvir has the potential to be a potent, best-in-class, once-a-day, single-dose, 10-day antiviral therapy for COVID. This profile contrasts with Paxlovid™, an approved Mpro inhibitor, which requires co-administration of ritonavir, a metabolic inhibitor. We believe that ratutrelvir’s ritonavir-free regimen has the potential to reduce the burden of treatment, especially for patients with underlying medical conditions. Based on the Phase 1 data, we have selected the dose for our Phase 2a study, expected to begin in H1 2025.” “As we near the fifth anniversary of the pandemic, it is notable that, despite the wide availability of approved antiviral therapies, COVID was a major cause of mortality in the US in 2023, with approximately 50,000 deaths1,” said Robert R. Redfield, MD, Chief Medical Officer for Traws Pharma and former Director of the U.S. Centers for Disease Control and Prevention (CDC). “...