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Drug-drug Interaction Study of Omeprazole and Bemnifosbuvir/Ruzasvir

A Phase 1, Open-Label, Single-Sequence Study to Assess the Effect of Multiple Doses of Omeprazole on the Single-Dose Pharmacokinetics of Bemnifosbuvir/Ruzasvir Fixed-Dose Combination in Healthy Adult Participants

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07007806
Enrollment
20
Registered
2025-06-06
Start date
2025-05-09
Completion date
2025-06-28
Last updated
2025-08-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Healthy Volunteer Study

Brief summary

Drug-drug interaction study between Omeprazole and Bemnifosbuvir/Ruzasvir (BEM/RZR)

Interventions

DRUGTreatment A-Bemnifosbuvir/Ruzasvir FDC administered fasting

On day 1 single 550 mg/180 mg dose BEM/RZR FDC (2 × 275 mg/90 mg FDC tablets) will be administered under fasting conditions.

DRUGTreatment B-Omeprazole 20 mg dose administered fasting

On Day 4 to Day 13, a 20 mg dose omeprazole (1 × 20 mg) will be administered QD under fasting conditions.

DRUGTreatment C-Bemnifosbuvir/Ruzasvir FDC administered simultaneously with 20 mg dose of Omeprazole fasting

On Day 8, a single 550 mg/180 mg dose BEM/RZR FDC (2 × 275 mg/90 mg FDC tablets) will be administered under fasting conditions simultaneously with a 20 mg dose omeprazole (1 × 20 mg).

DRUGTreatment D-Bemnifosbuvir/Ruzasvir FDC administered 0.5 hour prior to 20 mg dose of Omeprazole

On Day 13, a single 550 mg/180 mg dose BEM/RZR FDC (2 × 275 mg/90 mg FDC tablets) will be administered 0.5 hour before the administration of a 20 mg dose omeprazole (1 × 20 mg).

DRUGTreatment E-Omeprazole 40 mg administered fasting

On Day 14 to Day 22, a 40 mg dose omeprazole (2 × 20 mg) will be administered QD under fasting conditions.

DRUGTreatment F-Bemnifosbuvir/Ruzasvir FDC administered 2 hours after 40 mg dose Omeprazole

On Day 18, a single 550 mg/180 mg dose BEM/RZR FDC (2 × 275 mg/90 mg FDC tablets) will be administered 2 hours after the administration of a 40 mg dose omeprazole (2 × 20 mg).

Sponsors

Atea Pharmaceuticals, Inc.
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SEQUENTIAL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 55 Years
Healthy volunteers
Yes

Inclusion criteria

* Must agree to use acceptable contraceptive methods through at least 90 days after the last dose of study drug. * Minimum body weight of 50 kg and body mass index (BMI) of 18.5-30 kg/m2. * Willing to comply with the study requirements and to provide written informed consent.

Exclusion criteria

* Infected with hepatitis B virus, hepatitis C virus, HIV or SARS-CoV-2. * Abuse of alcohol or drugs. * Use of other investigational drugs within 28 days of dosing. * Concomitant use of prescription medications, or systemic over-the-counter medications. * Other clinically significant medical conditions or laboratory abnormalities.

Design outcomes

Primary

MeasureTime frameDescription
PK of BEM/RZRDay 1, 8, 13, 18Cmax
PK of OmeprazoleDay 7, 8Cmax

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026