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NCT04960202 · ClinicalTrials.gov registry record · Phase 2

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

A Phase 2 study of COVID-19, sponsored by Pfizer.

Completed
Registry status
Phase 2
Development phase
2,091
Enrollment target
20
Study locations

NCT04960202: Completed Phase 2 study of COVID-19, sponsored by Pfizer.

NCT04960202 is a Phase 2 study of COVID-19 that has completed, run by Pfizer. The registered enrollment target is 2,091 participants, below the 38,458-participant average among 298 other COVID-19 trials with a reported enrollment target (95% lower). The trial reports 20 study locations across 5 states. According to ClinicalTrials.gov, the official US trial registry.

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The verdict

NCT04960202, a Phase 2 study of COVID-19, has completed, sponsored by Pfizer.

COMPLETED
Registry status
Phase 2
Development phase
2,091 participants
Enrollment target
20
Study locations

Study 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.

Primary Outcome

Percentage of participants with COVID-19 related hospitalization or death from any cause during the first 28 days of the study was estimated using the Kaplan-Meier (KM) method. Using KM method, survival probability for each time interval was calculated as the number of participants surviving divided by the number of participants at risk. Participants who had the event, dropped out, or moved out were not counted as "at risk" i.e., participants who were lost were considered "censored" and were not

Conditions Studied

Interventions

  • DRUG Placebo
  • DRUG Ritonavir
  • DRUG PF-07321332

Study Locations (20)

Florida

  • Xera Med Research - Boca Raton
  • MOORE Clinical Research, Inc. - Brandon
  • Innovative Research of West Florida, Inc. - Clearwater
  • Herco Medical and Research Center Inc - Coral Gables
  • Advance Clinical Research Group - Cutler Bay
  • Beautiful Minds Clinical Research Center - Cutler Bay
  • Qway Research - Hialeah
  • Eastern Research Inc - Hialeah
  • Inpatient Research Clinic - Hialeah

California

  • Hope Clinical Research - Canoga Park
  • Ascada Research - Fullerton
  • Atella Clinical Research LLC. - La Palma
  • Ark Clinical Research - Long Beach
  • American Institute of Research - Los Angeles
  • South Bay Clinical Research Institute - Redondo Beach
  • Hope Clinical Research (COVID Satellite Site) - West Hills

Arizona

  • The Institute for Liver Health dba Arizona Clinical Trials - Mesa
  • The Institute for Liver Health dba Arizona Clinical Trials - Tucson

Alabama

  • Cahaba Research Inc - Pelham

Colorado

  • Future Innovative Treatments, LLC - Colorado Springs

Trial Details

FieldValue
Enrollment Target 2,091 participants
Start Date 2021-07-16
Est. Completion 2022-04-25
Phase Phase 2
Pfizer

1,845 total trials

What the finished NCT04960202 record still lists

NCT04960202 is an interventional study that assigns participants to a tested intervention. Its 2,091 participants enrollment target places it among the larger protocols in the corpus, below the 38,458-participant average among 298 other COVID-19 trials with a reported enrollment target (95% lower).

The record links to 1 condition, with COVID-19 appearing as the primary indexed condition, and to 3 interventions - of which Placebo is the first listed.

NCT04960202 names 20 study sites across 5 states, led by Florida, California, Arizona.

Frequently Asked Questions

What is clinical trial NCT04960202 about?

NCT04960202 is a clinical study titled "EPIC-HR: Study of Oral PF-07321332/Ritonavir Compared With Placebo in Nonhospitalized High Risk Adults With COVID-19". 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...

What is the current status of trial NCT04960202?

This trial is currently completed. It is a Phase 2 study. The enrollment target is 2,091 participants. The study started on 2021-07-16. Estimated completion is 2022-04-25.

What conditions does trial NCT04960202 study?

This clinical trial studies the following conditions: COVID-19.

What interventions are being tested in trial NCT04960202?

The interventions under investigation include: Placebo (DRUG), Ritonavir (DRUG), PF-07321332 (DRUG).

Who is sponsoring clinical trial NCT04960202?

This trial is sponsored by Pfizer, which has 1,845 total clinical trials registered on ClinicalTrials.gov.

Where is trial NCT04960202 being conducted?

This trial has 20 study locations across Alabama, Arizona, California, Colorado, Florida. Contact the study sites directly through ClinicalTrials.gov for enrollment availability.

Similar trials for COVID-19

Matched on the same primary condition, ranked to surface studies in the same phase first, then by recruiting status, no relevance scoring or editorial curation.

Where NCT04960202's enrollment target sits among peer trials

2,091 43rd of 298 higher than 256 of 298 other COVID-19 trials

participants (enrollment target), bucketed by value

Each bar is a band; taller bars hold more other COVID-19 trials. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.

Source ClinicalTrials.gov registry export · 2026-08-08

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Source: ClinicalTrials.gov NCT04960202, the US trial registry maintained by the National Library of Medicine. NCT04960202 (large enrollment · wide site footprint · completed) retrieved and formatted by PlainTrial, see methodology.