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TERMINATED
NCT05386472
PHASE1

A Study to Learn About the Study Medicine (Nirmatrelvir Plus Ritonavir) in Pregnant Women With COVID-19

Sponsor: Pfizer

View on ClinicalTrials.gov

Summary

The purpose of this clinical trial is to learn about how study medicine (Paxlovid, which contains nirmatrelvir and ritonavir) is changed and eliminated from the body, as well as its safety, and the extent to which side effects can be tolerated for treatment of pregnant women with mild or moderate COVID-19 compared to non-pregnant women with mild or moderate COVID-19. This study is seeking participants who: * are expecting a healthy baby and are in their second or third trimester pregnancy and have mild or moderate COVID-19 * are not pregnant and have mild or moderate COVID-19. All participants in this study will take Paxlovid by mouth every 12 hours for 5 days. We will study the experiences of people receiving the study medicine. This will help us decide if the study medicine is safe. All participants will take part in this study for at least 34 days; pregnant participants will take part until their delivery, so that the study duration may be up to 6 months, depending on their delivery date. During this time, participants will have 7to 8 visits and, if pregnant, a visit at delivery. Around 2 to 3 visits and the delivery visit will be done in person (at the clinic or at the participant's home). The other 5 visits may be done over the phone, unless in-person visit is necessary as decided by the doctor. Blood samples will be collected on the first 4 to 5 study visits (and at other study visits, if necessary).

Official title: A PHASE 1, OPEN-LABEL STUDY TO EVALUATE THE PHARMACOKINETICS, SAFETY, AND TOLERABILITY OF ORALLY ADMINISTERED NIRMATRELVIR/RITONAVIR IN PREGNANT WOMEN WITH MILD-TO-MODERATE COVID-19

Key Details

Gender

FEMALE

Age Range

18 Years - 50 Years

Study Type

INTERVENTIONAL

Enrollment

25

Start Date

2022-06-22

Completion Date

2025-05-13

Last Updated

2026-08-17

Healthy Volunteers

No

Conditions

Interventions

DRUG

nirmatrelvir

Nirmatrelvir (tablets) administered by mouth every 12 hours for 5 days (10 doses total)

DRUG

ritonavir

Ritonavir (capsules) administered by mouth every 12 hours for 5 days (10 doses total)

Locations (13)

University of Alabama at Birmingham/Center for Women's Reproductive Health

Birmingham, Alabama, United States

Beautiful Minds Clinical Research Center

Cutler Bay, Florida, United States

Omega Research Debary

DeBary, Florida, United States

Omega Research Orlando

Orlando, Florida, United States

Santos Research Center

Tampa, Florida, United States

Clinical Research Prime

Idaho Falls, Idaho, United States

Boeson Research MSO

Missoula, Montana, United States

Origin Health

Missoula, Montana, United States

Maximos Ob/Gyn

League City, Texas, United States

University of Utah

Salt Lake City, Utah, United States

University of Utah

Salt Lake City, Utah, United States

University of Utah Clinical Neuroscience Center

Salt Lake City, Utah, United States

University of Utah Hospital

Salt Lake City, Utah, United States