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ClinicalTrials.gov public records Last synced Sep 30, 2026, 11:44 PM EDT

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Showing 1–24 of 107 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Atazanavir + Ritonavir Clear all
Completed Not applicable Interventional

Effects of Treatment Changes on Fat Wasting in the Arms and Legs of HIV Patients

NCT00028314
View directory record Official record
Conditions
HIV Infections, Lipodystrophy, Wasting Disease
Interventions
Abacavir sulfate, Atazanavir/Ritonavir, Lopinavir/Ritonavir, Nevirapine
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
13 Years and older
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2005
U.S. locations
25
States / cities
Los Angeles, California • Torrance, California • Aurora, Colorado + 15 more
Source: ClinicalTrials.gov public record
Updated Jul 29, 2013 · Synced Sep 30, 2026, 11:44 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Genetics and HIV-1 Protease Inhibitors

NCT01388543
View directory record Official record
Conditions
HIV
Interventions
Atazanavir
Drug
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years to 55 Years
Enrollment
31 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2008
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Nov 19, 2019 · Synced Sep 30, 2026, 11:44 PM EDT
Completed Phase 1Phase 2 Interventional

Blood Levels of Anti-HIV Drugs Used in Combination Regimens in HIV Infected Children

NCT00260078
View directory record Official record
Conditions
HIV Infections
Interventions
Atazanavir, Darunavir, Efavirenz, Nevirapine, Ritonavir, Tenofovir disoproxil fumarate, Pharmacokinetic Study
Drug · Procedure
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
8 Years to 17 Years
Enrollment
75 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2009
U.S. locations
21
States / cities
Alhambra, California • La Jolla, California • Long Beach, California + 16 more
Source: ClinicalTrials.gov public record
Updated Nov 9, 2021 · Synced Sep 30, 2026, 11:44 PM EDT
Terminated Phase 4 Interventional

Pharmacokinetic Study of Two HIV Protease Inhibitors in Patients

NCT00420355
View directory record Official record
Conditions
HIV Infection
Interventions
atazanavir, lopinavir/ritonavir
Drug
Lead sponsor
University of Oklahoma
Other
Eligibility
18 Years to 60 Years
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
1
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Feb 6, 2009 · Synced Sep 30, 2026, 11:44 PM EDT
Completed Phase 2 Interventional Results available

Safety and Efficacy of Cobicistat-boosted Atazanavir Compared to Ritonavir-boosted Atazanavir in Combination With Emtricitabine/Tenofovir Disoproxil Fumarate in HIV-1 Infected, Antiretroviral Treatment-Naive Adults

NCT00892437
View directory record Official record
Conditions
HIV-1 Infection
Interventions
COBI, RTV, ATV, FTC/TDF, COBI placebo, RTV placebo
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years and older
Enrollment
85 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2015
U.S. locations
31
States / cities
Phoenix, Arizona • Little Rock, Arkansas • Beverly Hills, California + 23 more
Source: ClinicalTrials.gov public record
Updated Feb 15, 2016 · Synced Sep 30, 2026, 11:44 PM EDT
Completed Phase 3 Interventional

Study of HIV Patients With Undetectable Viral Load and Abnormal Lipids Switching to Atazanavir/Ritonavir

NCT00120393
View directory record Official record
Conditions
HIV Infections
Interventions
atazanavir/ritonavir +2 NRTIs (immediate Switch Group), LPV/r +2 NRTIs (Delayed/optional Switch Group)
Drug
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
18 Years and older
Enrollment
192 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2006
U.S. locations
12
States / cities
Phoenix, Arizona • Bakersfield, California • Los Angeles, California + 9 more
Source: ClinicalTrials.gov public record
Updated Feb 5, 2010 · Synced Sep 30, 2026, 11:44 PM EDT
Completed Phase 3 Interventional Results available

Study to Evaluate the Safety and Efficacy of Switching From Regimens Consisting of Boosted Atazanavir or Darunavir Plus Either Emtricitabine/Tenofovir or Abacavir/Lamivudine to Bictegravir/Emtricitabine/Tenofovir Alafenamide in Virologically Suppressed HIV-1 Infected Adults

NCT02603107
View directory record Official record
Conditions
HIV-1 Infection
Interventions
RTV, ATV, DRV, COBI, ATV/co, DRV/co, FTC/TDF, ABC/3TC, B/F/TAF
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years and older
Enrollment
578 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
63
States / cities
Phoenix, Arizona • Los Angeles, California • Newport Beach, California + 49 more
Source: ClinicalTrials.gov public record
Updated Dec 29, 2020 · Synced Sep 30, 2026, 11:44 PM EDT
Terminated Phase 4 Interventional Accepts healthy volunteers Results available

Safety and Acceptability Study of Non-occupational Prophylaxis (PEP) Following Potential Exposure to HIV

NCT01602822
View directory record Official record
Conditions
HIV
Interventions
Tenofovir DF and Emtricitabine; Ritonavir-boosted Atazanavir
Drug
Lead sponsor
Kenneth H. Mayer, MD
Other
Eligibility
18 Years and older
Enrollment
11 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 10, 2025 · Synced Sep 30, 2026, 11:44 PM EDT
Completed Not applicable Interventional Results available

Preservation and Expansion of T-cell Subsets Following HAART De-intensification to Atazanavir/Ritonavir (ATV/r)

NCT00491556
View directory record Official record
Conditions
HIV Infections
Interventions
Early Initiation of Highly Active Anti-Retroviral Therapy, Standard Care
Procedure
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 24 Years
Enrollment
102 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2013
U.S. locations
22
States / cities
Los Angeles, California • San Francisco, California • Aurora, Colorado + 14 more
Source: ClinicalTrials.gov public record
Updated Mar 29, 2017 · Synced Sep 30, 2026, 11:44 PM EDT
Terminated Phase 2 Interventional Results available

Phase IIB Pilot of Atazanavir + Raltegravir

NCT00768989
View directory record Official record
Conditions
HIV
Interventions
Atazanavir, Raltegravir, Ritonavir, Tenofovir/Emtricitabine
Drug
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
18 Years and older
Enrollment
167 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
9
States / cities
Phoenix, Arizona • New Haven, Connecticut • Washington D.C., District of Columbia + 5 more
Source: ClinicalTrials.gov public record
Updated Feb 24, 2012 · Synced Sep 30, 2026, 11:44 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Drug-Drug Interaction Study of Ketoconazole, Rifampicin and Ritonavir-Boosted Atazanavir With Single-Dose RO5093151 in Healthy Volunteers

NCT01591850
View directory record Official record
Conditions
Healthy Volunteer
Interventions
RO5093151, atazanavir, ketoconazole, rifampicin, ritonavir
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
18 Years to 65 Years
Enrollment
51 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011
U.S. locations
1
States / cities
Merritt Island, Florida
Source: ClinicalTrials.gov public record
Updated Nov 2, 2016 · Synced Sep 30, 2026, 11:44 PM EDT
Completed Phase 3 Interventional Results available

Roll-Over Protocol To Provide Atv And/Or Truvada For Extended Access

NCT01003990
View directory record Official record
Conditions
HIV
Interventions
Atazanavir, Atazanavir/Ritonavir, Tenofovir/Emtricitabine, Lopinavir/ritonavir
Drug
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
16 Years and older
Enrollment
710 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2016
U.S. locations
12
States / cities
Phoenix, Arizona • Los Angeles, California • San Francisco, California + 9 more
Source: ClinicalTrials.gov public record
Updated May 11, 2017 · Synced Sep 30, 2026, 11:44 PM EDT
Completed Not applicable Interventional

Atazanavir/Ritonavir Maintenance Therapy

NCT00084019
View directory record Official record
Conditions
HIV Infections
Interventions
Atazanavir, Ritonavir
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2006
U.S. locations
11
States / cities
Palo Alto, California • Aurora, Colorado • Honolulu, Hawaii + 8 more
Source: ClinicalTrials.gov public record
Updated Nov 1, 2021 · Synced Sep 30, 2026, 11:44 PM EDT
Completed Phase 3 Interventional

A Pilot Study of Atazanavir/Ritonavir/Efavirenz as a Nucleoside Sparing Regimen

NCT00135343
View directory record Official record
Conditions
HIV Infections
Interventions
Atazanvir/ritonavir + efavirenz
Drug
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2005
U.S. locations
15
States / cities
San Francisco, California • Washington D.C., District of Columbia • Atlantis, Florida + 12 more
Source: ClinicalTrials.gov public record
Updated Apr 14, 2011 · Synced Sep 30, 2026, 11:44 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Drug Interaction Study With Atazanavir Administered With and Without Ritonavir and a Cytochrome P450 Substrate Rosiglitazone

NCT00362726
View directory record Official record
Conditions
HIV Infections
Interventions
Rosiglitazone maleate, Atazanavir Sulphate, Atazanavir Sulphate + Rosiglitazone maleate, Atazanavir Sulphate + Ritonavir, Atazanavir Sulphate + Ritonavir + Rosiglitazone maleate
Drug
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
18 Years to 50 Years
Enrollment
14 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006
U.S. locations
1
States / cities
Hamilton, New Jersey
Source: ClinicalTrials.gov public record
Updated Apr 8, 2011 · Synced Sep 30, 2026, 11:44 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Drug Interaction Study With Proton Pump Inhibitor

NCT00357240
View directory record Official record
Conditions
HIV Infections
Interventions
Atazanavir, Atazanavir/Ritonavir, Atazanavir/Ritonavir+Omeprazole
Drug
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
18 Years to 50 Years
Enrollment
56 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006
U.S. locations
1
States / cities
Hamilton, New Jersey
Source: ClinicalTrials.gov public record
Updated Apr 8, 2011 · Synced Sep 30, 2026, 11:44 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Impact of Menstrual Cycle on Antiretroviral Pharmacokinetics in Healthy Women

NCT00869960
View directory record Official record
Conditions
Healthy
Interventions
tenofovir, emtricitabine, atazanavir, ritonavir
Drug
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
21 Years to 40 Years · Female only
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Sep 6, 2013 · Synced Sep 30, 2026, 11:44 PM EDT
Withdrawn No phase listed Observational

Impact of Menstrual Cycle on Antiretroviral Pharmacokinetics in HIV-Infected Women

NCT01394133
View directory record Official record
Conditions
HIV Infected
Interventions
Tenofovir, Emtricitabine, Atazanavir, Ritonavir
Drug
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
21 Years to 40 Years · Female only
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Apr 30, 2013 · Synced Sep 30, 2026, 11:44 PM 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 13, 2010 · Synced Sep 30, 2026, 11:44 PM EDT
Completed Phase 4 Interventional Results available

Nevirapine vs. Atazanavir Boosted With Ritonavir on a Background of Truvada in Human Immunodeficiency Virus (HIV) Infected Naive Patients (NEwArT)

NCT00552240
View directory record Official record
Conditions
HIV Infections
Interventions
tenofovir DF 300 mg QD, emtricitabine 200 mg QD, Nevirapine 200 mg BID, Atazanavir 300 mg, Ritonavir 100 mg
Drug
Lead sponsor
Boehringer Ingelheim
Industry
Eligibility
18 Years and older
Enrollment
154 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2007
U.S. locations
19
States / cities
Beverly Hills, California • Los Angeles, California • Denver, Colorado + 15 more
Source: ClinicalTrials.gov public record
Updated Jan 27, 2014 · Synced Sep 30, 2026, 11:44 PM EDT
Completed Phase 4 Interventional Results available

Lopinavir/r or Fosamprenavir/r Switch to Atazanavir/r or Darunavir/r

NCT00756730
View directory record Official record
Conditions
HIV Infections
Interventions
ATV/r, DRV/r
Drug
Lead sponsor
Community Research Initiative of New England
Other
Eligibility
18 Years and older
Enrollment
49 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
11
States / cities
Phoenix, Arizona • Los Angeles, California • Orlando, Florida + 7 more
Source: ClinicalTrials.gov public record
Updated Aug 21, 2017 · Synced Sep 30, 2026, 11:44 PM EDT
Completed Phase 3 Interventional Results available

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)

NCT01910402
View directory record Official record
Conditions
Infection, Human Immunodeficiency Virus, HIV Infections
Interventions
Dolutegravir/abacavir/lamivudine FDC, Atazanavir, Ritonavir, Tenofovir/emtricitabine FDC
Drug
Lead sponsor
ViiV Healthcare
Industry
Eligibility
18 Years and older · Female only
Enrollment
499 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2022
U.S. locations
37
States / cities
Phoenix, Arizona • Bakersfield, California • Beverly Hills, California + 31 more
Source: ClinicalTrials.gov public record
Updated Feb 20, 2024 · Synced Sep 30, 2026, 11:44 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Atazanavir and Ritonavir (ATV/RTV) and an Oral Contraceptive in Healthy Females

NCT00357604
View directory record Official record
Conditions
HIV Infections
Interventions
Ortho Tri-Cyclen (ethinyl estradiol + norgestimate), Ortho Tri-Cyclen LO (ethinyl estradiol + norgestimate) + Atazanavir/Ritonavir for 14 days then Ortho Tri-Cyclen for 7 days
Drug
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
18 Years to 45 Years · Female only
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Apr 8, 2011 · Synced Sep 30, 2026, 11:44 PM EDT
Completed Phase 3 Interventional Results available

BMS-Reyataz Study in Treatment in Naive Subjects to Compare the Efficacy and Safety Between Boosted Reyataz and Kaletra When in Combination With Fixed Dose Truvada

NCT00272779
View directory record Official record
Conditions
HIV Infections
Interventions
ATV, RTV, Tenofovi-Emtricitabine (TDF/FTC) tablet, LPV
Drug
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
18 Years and older
Enrollment
1,057 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2008
U.S. locations
8
States / cities
Phoenix, Arizona • Laguna Beach, California • Washington D.C., District of Columbia + 5 more
Source: ClinicalTrials.gov public record
Updated May 9, 2011 · Synced Sep 30, 2026, 11:44 PM EDT