Clinical Trial

EPIC-Peds: A Study to Learn About the Study Medicine Called PF-07321332 (Nirmatrelvir)/Ritonavir in Patients Under 18 Years of Age With COVID-19 That Are Not Hospitalized But Are at Risk for Severe Disease

Recruiting Phase 3
View on ClinicalTrials.gov →
Record status
This record was last updated July 17, 2025 (before its estimated July 30, 2026 completion). Its status may not reflect the trial's current state.
Summary
The purpose of this clinical trial is to learn about the safety, pharmacokinetics (pharmacokinetics helps us understand how the drug is changed and eliminated from your body after you take it), and efficacy (how well a study treatment works in the study) of the study medicine (called nirmatrelvir/ritonavir) for potential treatment of coronavirus disease 2019 (COVID-19). The study medicine will be given to patients under 18 years of age with COVID-19 that are not hospitalized but are at risk for severe disease.
Protocol Amendment History 37 amendments
This ClinicalTrials.gov record has been amended 37 times since 2022-02-28; most recent amendment 2025-07-16.
Status change: Suspended → Recruiting 2024-11-01
Status change: Recruiting → Suspended 2024-08-15
Status change: Suspended → Recruiting 2024-06-03
Status change: Recruiting → Suspended 2024-01-30
Status change: Suspended → Recruiting 2023-06-02
Status change: Recruiting → Suspended 2023-03-03
Status change: Not Yet Recruiting → Recruiting 2022-03-16
Trial Details
NCT Number NCT05261139
Lead Sponsor Pfizer
Conditions COVID-19
Enrollment 160 participants
Start Date 2022-03-07
Primary Completion 2026-07-30 (estimated)
Study Completion 2026-07-30 (estimated)
Updated on ClinicalTrials.gov 2025-07-17