Traws Pharma Files IND Application for TXM Influenza Treatment
Traws Pharma announced the filing of a U.S. IND application with the U.S. Food and Drug Administration, FDA, for tivoxavir marboxil, TXM, a CAP-dependent endonuclease inhibitor as a single oral tablet administered for the treatment of influenza. "This filing represents an important step towards formal consideration of TXM for influenza therapy and inclusion in the strategic national stockpile," commented C. David Pauza, PhD, Chief Scientific Officer of Traws Pharma. "Coupled with our ongoing positive interactions with the U.S. Department of Health and Human Services regarding the unique properties of TXM as a broad pan-influenza strain therapeutic, we remain optimistic about the potential inclusion of this agent in the nation's armamentarium against potential future disease outbreaks."
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Traws Pharma Advances Ratutrelvir COVID-19 Trial
- Trial Progress: Traws Pharma has completed enrollment of 90 patients in its Ratutrelvir clinical trial, comparing the drug with Pfizer's Paxlovid, aiming to provide an alternative treatment for patients unable to use Paxlovid.
- Efficacy and Tolerability: Early data analysis indicates that Ratutrelvir has a favorable tolerability profile, faster symptom resolution, and no observed viral rebound events, supporting its potential utility in reducing post-acute sequelae of SARS-CoV-2 infection (Long COVID).
- Influenza Treatment Update: Traws is also advancing Tivoxavir Marboxil as a potential once-monthly oral preventive treatment for seasonal flu, further expanding its pipeline targeting respiratory viral diseases.
- Market Reaction: Although TRAW shares slipped after the opening bell, they gained about 5% in premarket trading, reflecting investor optimism regarding the company's research progress, with the stock rebounding over 115% in 2026.

Traws Pharma Reports Clinical Progress on Ratutrelvir and Tivoxavir Marboxil
- Clinical Trial Results: Traws Pharma's ratutrelvir shows fewer adverse events and no viral rebounds in a 90-patient Phase 2 study compared to PAXLOVID®, indicating its potential advantages in treating COVID-19, especially for patients ineligible for PAXLOVID®.
- Efficacy Improvement: The 600mg daily dose of ratutrelvir over 10 days significantly shortens symptom resolution time and has not shown viral rebound events, potentially offering a more effective treatment option for acute COVID-19 patients and supporting its impact on long-term outcomes.
- New Influenza Prevention Approach: Traws Pharma's tivoxavir marboxil is predicted to provide 28-day protection against influenza, with the new compressed tablet formulation showing over 3X effective blood levels in prior studies, potentially offering an innovative prophylactic treatment for seasonal influenza.
- Future Research Plans: The company plans to conduct an influenza prophylaxis challenge study in June 2026, and if results are positive, will advance tivoxavir marboxil into registration studies, further expanding its application potential in the antiviral market.









