Clinical trials: Ritonavir
Bioavailability
Relative Bioavailability Study of PF-07321332/Ritonavir Oral Powder Relative to the Commercial Tablets in Healthy Participants
The purpose of this study is to estimate the relative bioavailability of PF-07321332/ritonavir oral powder relative to the commercial tablet formulation under fasted condition in healthy adult participants.
- Trial name
- NCT05263921
- Testing
- PF-07321332/ritonavir
- Where
- United States
- Volunteers
- 12 people, healthy volunteers welcome
- Sponsor
- Pfizer
Biological Availability
Relative Bioavailability Study of Nirmatrelvir/Ritonavir Oral Powder Relative to the Commercial Tablets and Estimation of the Effect of Food on Bioavailability of the Nirmatrelvir/Ritonavir Oral Powder in Healthy Participants.
The purpose of this study is to estimate the relative bioavailability (rBA) of nirmatrelvir/ritonavir oral powder in 3 different food vehicles relative to the Paxlovid® tablets under fasted condition in healthy adult…
- Trial name
- NCT05544786
- Testing
- Nirmatrelvir/ ritonavir, Nirmatrelvir/Ritonavir
- Where
- Belgium
- Volunteers
- 12 people, healthy volunteers welcome
- Sponsor
- Pfizer
Healthy Participants
PF-07321332/Ritonavir and Ritonavir on Dabigatran Study in Healthy Participants
This is a drug-drug interaction study to assess the effects of PF-07321332/ritonavir and ritonavir on the Pharmacokinetic (PK) of dabigatran in healthy volunteers. PK will be evaluated for PF-07321332 and ritonavir.
- Trial name
- NCT05064800
- Testing
- Dabigatran, PF-07321332/ritonavir + Dabigatran, Ritonavir + Dabigatran
- Where
- United States
- Volunteers
- 24 people, healthy volunteers welcome
- Sponsor
- Pfizer
COVID-19 Drug Treatment
A Study to Learn About the Patients With COVID-19 Prescribed Paxlovid in Morocco
The purpose of this study is to collect information on the: general information of a group of people such as their age, sex, and other facts. clinical information of the patients such as any other illness before having COVID 19.
- Trial name
- NCT05997485
- Testing
- Nirmatrelvir/Ritonavir
- Sponsor
- Pfizer
Infection, Human Immunodeficiency Virus, HIV Infections
A Study to Determine Safety and Efficacy of Dolutegravir/Abacavir/Lamivudine (DTG/ABC/3TC) in Human Immunodeficiency Virus (HIV)-1 Infected Antiretroviral Therapy (ART) Naïve Women (ARIA)
This study is designed to demonstrate the non-inferior antiviral activity of DTG/ABC/3TC fixed dose combination (FDC) once daily (OD) compared to atazanavir plus ritonavir (ATV+RTV) and tenofovir disoproxil fumarate/emtricitabine…
- Trial name
- NCT01910402
- Testing
- Dolutegravir/abacavir/lamivudine FDC, Atazanavir, Ritonavir
- Where
- 90 sites in United States, Argentina and 11 more
- Volunteers
- 499 people
- Sponsor
- ViiV Healthcare
HIV
Open-Label Study Comparing Efficacy and Safety of ATV/RTV+3TC With ATV/RTV+TDF/FTC in HIV-Infected, Treatment Naïve Subjects, Followed by Treatment With ATV/RTV+3TC
The primary objective of this study in antiretroviral (ARV)-naïve Human immunodeficiency virus 1 (HIV-1) ribonucleic acid infected subjects is to compare the response rate at Week 48 of a daily regimen of Atazanavir (ATV)/…
- Trial name
- NCT01620944
- Testing
- Atazanavir, Ritonavir, Lamivudine
- Volunteers
- 3 people
- Sponsor
- Bristol-Myers Squibb
HIV
Second-line Treatment of HIV-1 With Ritonavir Boosted Atazanavir or Darunavir With an Optimized NRTI Backbone
The purpose of this study is to determine the proportion of subjects with HIV-1 RNA < 50 c/mL at Week 48 in patients who failed their first line therapy containing a non-nucleoside reverse transcriptase inhibitor (NNRTI) or an…
- Trial name
- SUPPRESS (NCT01605084)
- Testing
- Atazanavir, Darunavir, Ritonavir
- Where
- 14 sites in United States
- Sponsor
- Bristol-Myers Squibb
Neoplasm Metastasis
Study of DS-8201a for Participants With Advanced Solid Malignant Tumors
HER2-positive cancer is a cancer that tests positive for a protein called human epidermal growth factor receptor 2 (HER2). HER2 promotes the growth of certain cancer cells.
- Trial name
- NCT03383692
- Testing
- DS-8201a, Ritonavir, Itraconazole
- Where
- 10 sites in Japan, South Korea and 1 more
- Volunteers
- 40 people
- Sponsor
- Daiichi Sankyo Co., Ltd.
HIV Infections
Dual Boosted - Protease Inhibitor (PI) Pharmacokinetics (PK) Trial (Tipranavir / Ritonavir) in Highly Treatment-experienced HIV-1 Infected Patients
This is an open-label, randomized, parallel group pharmacokinetics trial of tipranavir/ritonavir (TPV/RTV), alone or in combination with RTV-boosted saquinavir (SQV), amprenavir (APV) or lopinavir (LPV), plus an optimized…
- Trial name
- NCT00056641
- Testing
- tipranavir, ritonavir, saquinavir
- Where
- 109 sites in United States, Australia and 11 more
- Volunteers
- 328 people
- Sponsor
- Boehringer Ingelheim
Healthy Participant
Drug-Drug Interaction Study of Itraconazole With GST-HG171/Ritonavir in Healthy Participants
The purpose of this study is to estimate the effect of a strong inhibitor of CYP3A4 (itraconazole) on the pharmacokinetics (PK) of GST-HG171/ritonavir in healthy participants.
- Trial name
- NCT06087055
- Testing
- GST-HG171/Ritonavir, Itraconazole
- Where
- China
- Volunteers
- 12 people, healthy volunteers welcome
- Sponsor
- Fujian Akeylink Biotechnology Co., Ltd.
COVID-19 Respiratory Infection
Food Effects of GST-HG171 Tablets Combined With Ritonavir in Healthy Chinese Participants
A single-center, randomized, open, single-dose, two-cycle, two-sequence, cross-over study was conducted to evaluate the effect of food on the pharmacokinetic characteristics of GST-HG171 in combination with Ritonavir.
- Trial name
- NCT06084507
- Testing
- GST-HG171/ritonavir, ritonavir
- Where
- China
- Volunteers
- 18 people, healthy volunteers welcome
- Sponsor
- Fujian Akeylink Biotechnology Co., Ltd.
COVID-19 Pneumonia
Study of GST-HG171/Ritonavir Compared With Placebo in Patients With Mild to Moderate COVID-19
This is a multi-center, randomized, double-blind, placebo-controlled clinical trial to assess the efficacy and safety of GST-HG171/Ritonavir in the treatment of mild to moderate COVID-19.
- Trial name
- NCT05656443
- Testing
- GST-HG171/Ritonavir
- Where
- China
- Volunteers
- 1,246 people
- Sponsor
- Fujian Akeylink Biotechnology Co., Ltd.
Infection, Human Immunodeficiency Virus, HIV Infections
Study Of An Investigational Regimen Including FDA Approved HIV Drugs In HIV-Infected Pediatric Subjects
This is a 48-week study to evaluate the safety, tolerability, pharmacokinetics, and antiviral activity of an investigational regimen including FDA approved HIV drugs in HIV-infected pediatric subjects, ages 4 weeks to < 2 years…
- Trial name
- NCT00071760
- Testing
- GW433908, ritonavir
- Where
- 15 sites in United States, Argentina and 5 more
- Volunteers
- 59 people
- Sponsor
- ViiV Healthcare
Healthy Participant
Drug-Drug Interaction Study Assessing Effect of Carbamazepine on PF-07321332 Boosted With Ritonavir
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.
- Trial name
- NCT04962230
- Testing
- PF-07321332/ritonavir, Carbamazepine, PF 07321332/ritonavir
- Where
- United States
- Volunteers
- 12 people, healthy volunteers welcome
- Sponsor
- Pfizer
Healthy Participants
Food Effect Study to Evaluate the Effect of High-Fat Meal on the Relative Bioavailability of PF-07321332 Boosted With Ritonavir in Healthy Adult Participants
This is a Phase 1, open label, single dose, randomized, 2-treatment, 2-sequence, 2-period crossover study to evaluate the effect of high-fat meal on the relative bioavailability of PF-07321332 boosted with ritonavir following…
- Trial name
- NCT05129475
- Testing
- PF-07321332/ritonavir, Ritonavir
- Where
- United States
- Volunteers
- 12 people, healthy volunteers welcome
- Sponsor
- Pfizer
Healthy Participants
Drug-Drug Interaction Study to Estimate the Effect of PF-07321332/Ritonavir and Ritonavir on Midazolam in Healthy Participants
The purpose of this study is to estimate the effect PF-07321332/Ritonavir and Ritonavir on Midazolam (a cytochrome P450 [CYP]3A4 substrate) in Healthy Adult Participants.
- Trial name
- NCT05032950
- Testing
- Midazolam, PF-07321332/ritonavir + Midazolam, Ritonavir + Midazolam
- Where
- Belgium
- Volunteers
- 12 people, healthy volunteers welcome
- Sponsor
- Pfizer
Hepatic Impairment
Study to Estimate the Effects of Hepatic Impairment on the Pharmacokinetics (PK) of PF-07321332
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…
- Trial name
- NCT05005312
- Testing
- PF-07321332, Ritonavir
- Where
- 2 sites in United States
- Volunteers
- 17 people, healthy volunteers welcome
- Sponsor
- Pfizer
COVID-19
Evaluation of Protease Inhibition for COVID-19 in Standard-Risk Patients (EPIC-SR).
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 name
- NCT05011513
- Testing
- PF-07321332, Ritonavir
- Where
- 225 sites in United States, Argentina and 18 more
- Volunteers
- 1,440 people
- Sponsor
- Pfizer
Renal Impairment
Renal Impairment Study of PF-07321332 Boosted With Ritonavir in Adult Participants With Renal Impairment and in Healthy Participants With Normal Renal Function.
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…
- Trial name
- NCT04909853
- Testing
- PF-07321332/ritonavir
- Where
- 5 sites in United States
- Volunteers
- 35 people, healthy volunteers welcome
- Sponsor
- Pfizer
Healthy Participant
Drug-Drug Interaction Study Assessing Effect of Itraconazole on PF-07321332/Ritonavir in Healthy Participants
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.
- Trial name
- NCT04962022
- Testing
- PF-07321332/ritonavir, Itraconazole
- Where
- Belgium
- Volunteers
- 12 people, healthy volunteers welcome
- Sponsor
- Pfizer