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Showing 1–24 of 337 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Protease Inhibitor Clear all
Completed Phase 2 Interventional

A Study of the Safety and Effectiveness of Hydroxyurea in Patients on Potent Antiretroviral Therapy and Who Have Less Than 200 Copies/ml of HIV RNA in Their Blood

NCT00000916
View directory record Official record
Conditions
HIV Infections
Interventions
Indinavir sulfate, Lamivudine/Zidovudine, Hydroxyurea, Lamivudine, Stavudine, Zidovudine, Didanosine
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
13 Years and older
Enrollment
399 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 2004
U.S. locations
34
States / cities
Birmingham, Alabama • Palo Alto, California • San Diego, California + 24 more
Source: ClinicalTrials.gov public record
Updated Oct 28, 2021 · Synced Sep 13, 2026, 9:07 AM EDT
Completed Phase 2 Interventional

A Study on Amprenavir in Combination With Other Anti-HIV Drugs in HIV-Positive Patients

NCT00000912
View directory record Official record
Conditions
HIV Infections
Interventions
Indinavir sulfate, Abacavir sulfate, Amprenavir, Nelfinavir mesylate, Efavirenz, Levocarnitine, Adefovir dipivoxil, Saquinavir
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
13 Years and older
Enrollment
475 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 2000
U.S. locations
44
States / cities
Los Angeles, California • Menlo Park, California • San Diego, California + 27 more
Source: ClinicalTrials.gov public record
Updated Oct 28, 2021 · Synced Sep 13, 2026, 9:07 AM EDT
Completed Not applicable Interventional Results available

Tauroursodeoxycholic Acid for Protease-inhibitor Associated Insulin Resistance

NCT01877551
View directory record Official record
Conditions
HIV Related Insulin Resistance, Protease Inhibitor Related Insulin Resistance, Endoplasmic Reticulum Stress
Interventions
Tauroursodeoxycholic acid, Placebo tablet
Drug · Other
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 65 Years
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2018
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jan 26, 2020 · Synced Sep 13, 2026, 9:07 AM EDT
Completed Not applicable Interventional

A Study of Amprenavir in HIV-Infected Patients

NCT00002405
View directory record Official record
Conditions
HIV Infections
Interventions
Amprenavir
Drug
Lead sponsor
Glaxo Wellcome
Industry
Eligibility
4 Years and older
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
1
States / cities
Research Triangle Park, North Carolina
Source: ClinicalTrials.gov public record
Updated Jun 23, 2005 · Synced Sep 13, 2026, 9:07 AM EDT
Terminated Phase 2Phase 3 Interventional Results available

Upamostat, a Serine Protease Inhibitor, or Placebo for Treatment of COVID-19 Disease

NCT04723537
View directory record Official record
Conditions
Covid19
Interventions
Part A: Upamostat 200 mg, Part A: Upamostat 400 mg, Part A and B: Placebo, Part B: Upamostat 200 or 400 mg
Drug
Lead sponsor
RedHill Biopharma Limited
Industry
Eligibility
18 Years and older
Enrollment
61 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021
U.S. locations
11
States / cities
Cutler Bay, Florida • Hialeah, Florida • Miami, Florida + 7 more
Source: ClinicalTrials.gov public record
Updated Jun 5, 2024 · Synced Sep 13, 2026, 9:07 AM EDT
Completed Phase 3 Interventional

Atazanavir Versus Lopinavir/Ritonavir (LPV/RTV) in Patients Who Have Not Had Success With Protease Inhibitor-Containing HAART Regimen(s)

NCT00028301
View directory record Official record
Conditions
HIV Infections
Interventions
Atazanavir, Lopinavir/Ritonavir
Drug
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
16 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2003
U.S. locations
38
States / cities
Birmingham, Alabama • Phoenix, Arizona • Berkeley, California + 30 more
Source: ClinicalTrials.gov public record
Updated Sep 12, 2010 · Synced Sep 13, 2026, 9:07 AM EDT
Completed No phase listed Observational

Safety and Survival of Genetically Modified White Blood Cells in HIV-Infected Persons - A Study in Identical Twin Pairs

NCT00001353
View directory record Official record
Conditions
Acquired Immunodeficiency Syndrome, HIV Infection
Interventions
Genetically Marked Syngeneic T Lymphocytes
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
Not listed
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1993 – 2002
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 3, 2008 · Synced Sep 13, 2026, 9:07 AM EDT
Completed Phase 2Phase 3 Interventional Results available

Anti-HIV Drug Regimens and Treatment-Switching Guidelines in HIV Infected Children

NCT00039741
View directory record Official record
Conditions
HIV Infections
Interventions
NRTIs (ABC, FTC, FTC/TDF, 3TC, 3TC/AZT, d4T, TDF, ddC, AZT), NNRTIs (EFV, NVP), PIs (AMP, IDV, LPV/r, NFV, SQV, RTV)
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
30 Days to 18 Years
Enrollment
266 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2010
U.S. locations
29
States / cities
Alhambra, California • Long Beach, California • Los Angeles, California + 22 more
Source: ClinicalTrials.gov public record
Updated Nov 4, 2021 · Synced Sep 13, 2026, 9:07 AM EDT
Completed Phase 4 Interventional

Influence of the MDR1 Genotype on Blood Levels of Indinavir and Saquinavir in Healthy Volunteers

NCT00050180
View directory record Official record
Conditions
Healthy, HIV Infections
Interventions
Midazolam, Indinavir, Saquinavir
Drug
Lead sponsor
National Institutes of Health Clinical Center (CC)
NIH
Eligibility
18 Years to 60 Years
Enrollment
81 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2007
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 1, 2017 · Synced Sep 13, 2026, 9:07 AM EDT
Completed Phase 1 Interventional

The Safety and Effectiveness of Two Forms of Saquinavir Combined With Other Anti-HIV Drugs in HIV-Infected Infants and Children

NCT00002380
View directory record Official record
Conditions
HIV Infections
Interventions
Nelfinavir mesylate, Saquinavir
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
6 Months to 13 Years
Enrollment
28 participants
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
1
States / cities
Nutley, New Jersey
Source: ClinicalTrials.gov public record
Updated Jun 23, 2005 · Synced Sep 13, 2026, 9:07 AM EDT
Completed Phase 4 Interventional Results available

Safety and Efficacy Study of Switching From Epzicom to Truvada

NCT00724711
View directory record Official record
Conditions
HIV Infection
Interventions
emtricitabine (FTC)/tenofovir disoproxil fumarate (TDF), abacavir (ABC)/lamivudine (3TC)
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years and older
Enrollment
312 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
73
States / cities
Little Rock, Arkansas • Beverly Hills, California • Fountain Valley, California + 47 more
Source: ClinicalTrials.gov public record
Updated May 27, 2012 · Synced Sep 13, 2026, 9:07 AM EDT
Enrolling by invitation Phase 3 Interventional

Long Term Safety of Alpha1-Proteinase Inhibitor in Subjects With Alpha1 Antitrypsin Deficiency

NCT02796937
View directory record Official record
Conditions
Pulmonary Emphysema in Alpha-1 Antitrypsin Deficiency
Interventions
Alpha-1 MP
Biological
Lead sponsor
Grifols Therapeutics LLC
Industry
Eligibility
20 Years to 72 Years
Enrollment
290 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2029
U.S. locations
6
States / cities
Phoenix, Arizona • Miami, Florida • Wilmington, North Carolina + 3 more
Source: ClinicalTrials.gov public record
Updated Jun 22, 2026 · Synced Sep 13, 2026, 9:07 AM EDT
Completed Phase 4 Interventional

Safety and Effectiveness of a Combination Anti-HIV Drug Treatment

NCT00005018
View directory record Official record
Conditions
HIV Infections
Interventions
Hydroxyurea, Abacavir sulfate, Efavirenz, Didanosine
Drug
Lead sponsor
Glaxo Wellcome
Industry
Eligibility
13 Years and older
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1999 – 2000
U.S. locations
23
States / cities
Berkeley, California • Beverly Hills, California • Los Angeles, California + 19 more
Source: ClinicalTrials.gov public record
Updated Jun 23, 2005 · Synced Sep 13, 2026, 9:07 AM EDT
Completed Phase 2 Interventional

A Phase II, Stratified, Randomized, Double-Blind, Multi-Center Study of the Safety and Efficacy of Adefovir Dipivoxil (ADF) at Two Dose Levels in Triple Combination Therapies With Protease Inhibitors (PI) and Nucleoside Reverse Transcriptase Inhibitors (RTI) for the Treatment of HIV-Infected Patient

NCT00002184
View directory record Official record
Conditions
HIV Infections
Interventions
Nelfinavir mesylate, Levocarnitine, Adefovir dipivoxil, Saquinavir, Lamivudine, Stavudine, Zidovudine
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
16 Years and older
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
13
States / cities
Phoenix, Arizona • Los Angeles, California • San Francisco, California + 9 more
Source: ClinicalTrials.gov public record
Updated Jun 23, 2005 · Synced Sep 13, 2026, 9:07 AM EDT
Withdrawn Early Phase 1 Interventional

A Pilot Study of BXCL701 in Patients With Pancreatic Cancer

NCT04123574
View directory record Official record
Conditions
Cancer of Pancreas, Cancer of the Pancreas, Neoplasms, Pancreatic, Pancreas Cancer, Pancreatic Cancer
Interventions
Talabostat Mesylate
Drug
Lead sponsor
BioXcel Therapeutics Inc
Industry
Eligibility
18 Years to 75 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
2
States / cities
Boston, Massachusetts • New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 10, 2026 · Synced Sep 13, 2026, 9:07 AM EDT
Recruiting Phase 3 Interventional

A Study to Learn About the Study Medicine Ibuzatrelvir in Adults With COVID-19 Who Are Severely Immunocompromised

NCT07013474
View directory record Official record
Conditions
COVID-19 Infection
Interventions
ibuzatrelvir, remdesivir, placebo for ibuzatrelvir, placebo for remdesivir
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
66
States / cities
Canoga Park, California • Granada Hills, California • La Jolla, California + 25 more
Source: ClinicalTrials.gov public record
Updated Aug 24, 2026 · Synced Sep 13, 2026, 9:07 AM EDT
Terminated Phase 1 Interventional

Nelfinavir Mesylate, Radiation Therapy, and Temozolomide in Treating Patients With Glioblastoma Multiforme

NCT00915694
View directory record Official record
Conditions
Brain and Central Nervous System Tumors
Interventions
nelfinavir mesylate, temozolomide, adjuvant therapy, radiation therapy
Drug · Procedure · Radiation
Lead sponsor
Abramson Cancer Center at Penn Medicine
Other
Eligibility
18 Years to 120 Years
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2015
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Apr 22, 2019 · Synced Sep 13, 2026, 9:07 AM EDT
Completed Not applicable Interventional

The Effectiveness of Ritonavir Plus Zidovudine Plus Lamivudine in HIV-Infected Patients

NCT00001075
View directory record Official record
Conditions
HIV Infections
Interventions
Ritonavir, Lamivudine, Zidovudine
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
16 Years and older
Enrollment
55 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 2007
U.S. locations
3
States / cities
Aurora, Colorado • Chicago, Illinois • Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Nov 3, 2021 · Synced Sep 13, 2026, 9:07 AM EDT
Completed Phase 2 Interventional

A Study of RO5024048 in Combination With Ritonavir-Boosted Danoprevir With or Without Copegus (Ribavirin) in Interferon-Naïve Patients With Chronic Hepatitis C Genotype 1 (INFORM-SVR)

NCT01278134
View directory record Official record
Conditions
Hepatitis C, Chronic
Interventions
Copegus placebo, RO5024048, danoprevir, peginterferon alfa-2a [Pegasys], ribavirin [Copegus], ritonavir
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
18 Years and older
Enrollment
170 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
18
States / cities
La Jolla, California • Sacramento, California • Orlando, Florida + 14 more
Source: ClinicalTrials.gov public record
Updated Nov 1, 2016 · Synced Sep 13, 2026, 9:07 AM EDT
Completed Not applicable Interventional

A Comparison of Two Multi-Drug Therapies in HIV-Infected Patients Who Have Never Received Anti-HIV Treatment

NCT00002216
View directory record Official record
Conditions
HIV Infections
Interventions
Lamivudine/Zidovudine, Abacavir sulfate, Amprenavir, Nelfinavir mesylate
Drug
Lead sponsor
Glaxo Wellcome
Industry
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 23, 2005 · Synced Sep 13, 2026, 9:07 AM EDT
Terminated Phase 3 Interventional

Strategies and Treatments for Respiratory Infections & Viral Emergencies (STRIVE): Shionogi Protease Inhibitor (Ensitrelvir)

NCT05605093
View directory record Official record
Conditions
COVID-19
Interventions
Shionogi Protease Inhibitor (S-217622), placebo
Drug
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years and older
Enrollment
602 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
103
States / cities
Birmingham, Alabama • Tucson, Arizona • Fresno, California + 75 more
Source: ClinicalTrials.gov public record
Updated Nov 16, 2025 · Synced Sep 13, 2026, 9:07 AM EDT
Completed Phase 3 Interventional

Indinavir Plus Efavirenz Plus Adefovir Dipivoxil in HIV-Infected Patients Who Have Not Had Success With Nelfinavir

NCT00002220
View directory record Official record
Conditions
HIV Infections
Interventions
Indinavir sulfate, Efavirenz, Levocarnitine, Adefovir dipivoxil
Drug
Lead sponsor
Merck Sharp & Dohme LLC
Industry
Eligibility
16 Years and older
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
11
States / cities
Los Angeles, California • New Haven, Connecticut • Wilmington, Delaware + 8 more
Source: ClinicalTrials.gov public record
Updated Jun 23, 2005 · Synced Sep 13, 2026, 9:07 AM EDT
Completed Phase 3 Interventional

A Study of Indinavir Sulfate Plus Zidovudine (AZT) Plus Lamivudine in HIV-Infected Patients Who Have Taken AZT for Six or More Months

NCT00000841
View directory record Official record
Conditions
HIV Infections
Interventions
Indinavir sulfate, Lamivudine, Stavudine, Zidovudine
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Enrollment
1,750 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 1997
U.S. locations
85
States / cities
Birmingham, Alabama • Los Angeles, California • San Diego, California + 43 more
Source: ClinicalTrials.gov public record
Updated Nov 3, 2021 · Synced Sep 13, 2026, 9:07 AM EDT
Completed Phase 2 Interventional

A Study of Viracept in AIDS Patients With Mycobacterium Avium Complex Disease (MAC)

NCT00002170
View directory record Official record
Conditions
Mycobacterium Avium-Intracellulare Infection, HIV Infections
Interventions
Nelfinavir mesylate
Drug
Lead sponsor
Agouron Pharmaceuticals
Industry
Eligibility
13 Years and older
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
5
States / cities
San Diego, California • Torrance, California • Chicago, Illinois + 2 more
Source: ClinicalTrials.gov public record
Updated Jun 23, 2005 · Synced Sep 13, 2026, 9:07 AM EDT