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Last Updated: December 30, 2025

CLINICAL TRIALS PROFILE FOR PF-07321332


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Clinical Trials for PF-07321332

Trial ID Title Status Sponsor Phase Summary
NCT04756531 ↗ STUDY OF PF-07321332 IN HEALTHY PARTICIPANTS Completed Pfizer Phase 1 A Phase 1, double blind, sponsor open, single and multiple ascending dose study to evaluate safety, tolerability and pharmacokinetics of PF-07321332 in healthy participants.
NCT04909853 ↗ Renal Impairment Study of PF-07321332 Boosted With Ritonavir in Adult Participants With Renal Impairment and in Healthy Participants With Normal Renal Function. Recruiting Pfizer Phase 1 This is a Phase 1, non-randomized, open-label, 2-part study to investigate the effect of renal impairment on the pharmacokinetics (PK), safety and tolerability of a single oral dose of PF-07321332 in combination with the PK boosting agent ritonavir. Participants will be selected and categorized into normal renal function or renal impairment groups based on their estimated glomerular filtration rate. Part 1: will be conducted in approximately 24 participants (approximately 8 per group) with stable mild or moderate renal impairment and a control group of participants with normal renal function. Part 2 will be conducted in approximately 8 participants with stable severe renal impairment.
NCT04960202 ↗ A Study of PF-07321332/Ritonavir in Nonhospitalized High Risk Adult Participants With COVID-19 Recruiting Pfizer Phase 3 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.
NCT04962022 ↗ Drug-Drug Interaction Study Assessing Effect of Itraconazole on PF-07321332/Ritonavir in Healthy Participants Completed Pfizer Phase 1 The purpose of this study is to estimate the effect of a strong inhibitor of CYP3A4 (itraconazole) on the pharmacokinetics (PK) of PF-07321332/ritonavir in healthy participants.
NCT04962230 ↗ Drug-Drug Interaction Study Assessing Effect of Carbamazepine on PF-07321332 Boosted With Ritonavir Completed Pfizer Phase 1 This is a drug-drug interaction study to assess the effects of a single dose of PF-07321332/ritonavir after multiple dose administrations of carbamazepine. Pharmacokinetic (PK) will be evaluated for PF-07321332 and ritonavir. Carbamazepine is being utilized as a cytochrome P450 3A4 (CYP3A4) inducer.
NCT05005312 ↗ Study to Estimate the Effects of Hepatic Impairment on the Pharmacokinetics (PK) of PF-07321332 Recruiting Pfizer Phase 1 The study is to estimate the effect of hepatic impairment on the plasma PK of PF-07321332/ritonavir. Findings from this study will be used to develop dosing recommendations so that the dose and/or dosing interval may be adjusted appropriately in the presence of hepatic impairment.
NCT05011513 ↗ A Study of PF-07321332/Ritonavir in Non-hospitalized Low-Risk Adult Participants With COVID-19 Recruiting Pfizer Phase 3 The primary hypothesis to be tested is whether or not there is a difference in time to sustained alleviation of all targeted COVID-19 signs and symptoms through Day 28 between PF-07321332/ritonavir and placebo.
>Trial ID >Title >Status >Phase >Summary

Clinical Trial Conditions for PF-07321332

Condition Name

Condition Name
Intervention Trials
Healthy Participants 7
COVID-19 6
Healthy Participant 2
Bioavailability 2
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Condition MeSH

Condition MeSH
Intervention Trials
COVID-19 6
Liver Diseases 1
Renal Insufficiency 1
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Clinical Trial Locations for PF-07321332

Trials by Country

Trials by Country
Location Trials
United States 72
Japan 19
Brazil 18
Mexico 12
Malaysia 12
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Trials by US State

Trials by US State
Location Trials
Florida 5
California 5
Mississippi 4
Texas 4
Michigan 3
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Clinical Trial Progress for PF-07321332

Clinical Trial Phase

Clinical Trial Phase
Clinical Trial Phase Trials
Phase 3 4
Phase 1 17
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Clinical Trial Status

Clinical Trial Status
Clinical Trial Phase Trials
Not yet recruiting 10
Recruiting 7
Completed 3
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Clinical Trial Sponsors for PF-07321332

Sponsor Name

Sponsor Name
Sponsor Trials
Pfizer 21
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Sponsor Type

Sponsor Type
Sponsor Trials
Industry 21
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