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Ruzasvir · AT-038, MK-8408

Small molecule · developed by Atea Pharmaceuticals

Phase 2 Most advanced trial (none active)

AVIR Developer

2 Registered trials

What is Ruzasvir?

Ruzasvir (also known as AT-038 and MK-8408) is an orally administered agent studied in chronic hepatitis C virus infection, including patients with hepatic cirrhosis.

Summary written with AI from the sources listed at the end of this page.

At a glance

Also known as: AT-038, MK-8408
Drug type: Small molecule
Therapy area: Gastroenterology, Infectious disease
Developer: Atea Pharmaceuticals, Inc. (AVIR)
FDA status: Investigational, not approved in the US. Most advanced trial: Phase 2
UNII: LX752BD95Y

🧪 Clinical trials

Trial	Phase	Condition	Status	Sponsor
NCT05904470	Phase 2	Chronic Hepatitis C Virus	Completed	AVIR
NCT05731843	Phase 1	Healthy Volunteer Study	Completed	AVIR

Trials of the companies BioRadar tracks, from ClinicalTrials.gov, most advanced phase first.

Conditions studied

Chronic Hepatitis C VirusHCVHealthy Volunteer StudyHepatic CirrhosisHepatitis CHepatitis C, Chronic

More from Atea Pharmaceuticals

AT-527 Phase 1 AT-587 Phase 1 AT-752 Phase 2 AT-777 Phase 1/2 Bemnifosbuvir Phase 3 Bemnifosbuvir-Ruzasvir Phase 3 Ethinyl Estradioll/Levonorgestrel Phase 1 Treatment A-Bemnifosbuvir/Ruzasvir FDC Phase 1

Sources

ClinicalTrials.gov NCT05904470

Updated Oct 11, 2026. Something wrong or missing? Report it on the AVIR page.

Follow AVIR, the company behind Ruzasvir

See AVIR's upcoming FDA decisions, trial readouts, cash runway and dilution risk, updated every day from SEC, FDA and ClinicalTrials.gov filings.

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Data: FDA (Drugs@FDA, Purple Book, DailyMed), NIH (NCI Thesaurus, GSRS, RxNorm), ClinicalTrials.gov • Informational purposes only, not medical or investment advice. • All drugs A–Z