EPIC-HR: Study of Oral PF-07321332/Ritonavir Compared With Placebo in Nonhospitalized High Risk Adults With COVID-19

NCT04960202 · Status: COMPLETED · Phase: PHASE2/PHASE3 · Type: INTERVENTIONAL · Enrollment: 2091

Last updated 2025-07-10

Study results available
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Summary

The purpose of this study is to determine whether PF-07321332/ritonavir is safe and effective for the treatment of adults who are ill with COVID-19 and do not need to be in the hospital, but are at an increased risk of developing severe illness. Throughout the study period, provision will be made to allow study visits to be conducted at a participant's home or another non-clinic location if available. The total study duration is up to 24 weeks.

Conditions

Interventions

DRUG

PF-07321332

PF-07321332 (tablet)

DRUG

Ritonavir

Ritonavir (capsule)

DRUG

Placebo

Placebo (tablet or capsule)

Sponsors & Collaborators

Principal Investigators

  • Pfizer CT.gov Call Center · Pfizer

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
QUADRUPLE
Model
PARALLEL

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2021-07-16
Primary Completion
2021-12-09
Completion
2022-04-25
FDA Drug
Yes

Countries

  • United States
  • Argentina
  • Brazil
  • Bulgaria
  • Colombia
  • Czechia
  • Hungary
  • India
  • Japan
  • Malaysia
  • Mexico
  • Poland
  • Puerto Rico
  • Russia
  • South Africa
  • South Korea
  • Spain
  • Thailand
  • Turkey (Türkiye)
  • Ukraine

Study Locations

More Related Trials

Entities

Drugs
Diseases
Companies

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT04960202 on ClinicalTrials.gov