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Showing 1–24 of 107 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Atazanavir/ritonavir Clear all
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 4, 2010 · Synced Sep 24, 2026, 3:54 AM EDT
Completed Not applicable Interventional Results available

Pilot Study on the Effect of Adding Raltegravir +/- a Second Drug on HIV Levels in the Gut

NCT00884793
View directory record Official record
Conditions
HIV Infections
Interventions
raltegravir, Study NNRTI, Study PI
Drug
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years to 65 Years
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
2
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Jul 22, 2012 · Synced Sep 24, 2026, 3:54 AM 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 7, 2011 · Synced Sep 24, 2026, 3:54 AM EDT
Completed Phase 4 Interventional Results available

A Simplification Study of Unboosted Reyataz With Epzicom (ASSURE)

NCT01102972
View directory record Official record
Conditions
Infection, Human Immunodeficiency Virus
Interventions
Reyataz + Norvir + Truvada, Reyataz + Epzicom
Drug
Lead sponsor
ViiV Healthcare
Industry
Eligibility
18 Years and older
Enrollment
297 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
44
States / cities
Hobson City, Alabama • Phoenix, Arizona • Bakersfield, California + 36 more
Source: ClinicalTrials.gov public record
Updated Nov 18, 2013 · Synced Sep 24, 2026, 3:54 AM 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 9, 2025 · Synced Sep 24, 2026, 3:54 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

HIV Antiretroviral Drugs and Metabolism

NCT00525239
View directory record Official record
Conditions
HIV Infections
Interventions
ritonavir, lopinavir/ritonavir, atazanavir/ritonavir, efavirenz
Drug
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2010
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Mar 15, 2011 · Synced Sep 24, 2026, 3:54 AM EDT
Terminated Phase 2 Interventional Results available

Strategy-confirming Study of BMS-955176 to Treat HIV-1 Infected Treatment-experienced Adults

NCT02386098
View directory record Official record
Conditions
HIV Infections
Interventions
BMS-955176, Atazanavir (ATV), Ritonavir (RTV), Dolutegravir (DTG), Tenofovir (TDF)
Drug
Lead sponsor
ViiV Healthcare
Industry
Eligibility
18 Years and older
Enrollment
86 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
16
States / cities
Beverly Hills, California • Los Angeles, California • Palm Springs, California + 13 more
Source: ClinicalTrials.gov public record
Updated Aug 19, 2018 · Synced Sep 24, 2026, 3:54 AM EDT
Completed Phase 2 Interventional Results available

HIV Attachment Inhibitor to Treat Human Immunodeficiency Virus 1 (HIV-1) Infections

NCT01384734
View directory record Official record
Conditions
Infection, Human Immunodeficiency Virus
Interventions
BMS-663068 400 mg, BMS-663068 800 mg, BMS-663068 600 mg, BMS-663068 1200 mg, Raltegravir 400 mg, Tenofovir 300 mg, Ritonavir 100 mg, Atazanavir 300 mg
Drug
Lead sponsor
ViiV Healthcare
Industry
Eligibility
18 Years and older
Enrollment
254 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2017
U.S. locations
13
States / cities
San Francisco, California • Washington D.C., District of Columbia • Coral Gables, Florida + 9 more
Source: ClinicalTrials.gov public record
Updated Nov 13, 2018 · Synced Sep 24, 2026, 3:54 AM EDT
Completed Phase 1 Interventional

Pharmacokinetic Characteristics and Anti-Inflammatory Effects of Aprepitant In HIV-Infected Subjects

NCT02154360
View directory record Official record
Conditions
HIV Infection
Interventions
Aprepitant
Drug
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 16, 2017 · Synced Sep 24, 2026, 3:54 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study of Drug-Drug Interaction Between Danoprevir Coadministered With Low-Dose Ritonavir and Tenofovir Disoproxil Fumarate or Atazanavir

NCT01592305
View directory record Official record
Conditions
Healthy Volunteer
Interventions
atazanavir, danoprevir, ritonavir, tenofovir disoproxil fumarate
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
18 Years to 55 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012
U.S. locations
1
States / cities
Lenexa, Kansas
Source: ClinicalTrials.gov public record
Updated Nov 1, 2016 · Synced Sep 24, 2026, 3:54 AM EDT
Completed Phase 3 Interventional Results available

Phase IIIB Study Evaluating the Effects of Atazanavir Powder With Ritonavir in HIV-infected Pediatric Patients

NCT01335698
View directory record Official record
Conditions
HIV
Interventions
Atazanavir Sulphate, Ritonavir
Drug
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
3 Months to 11 Years
Enrollment
160 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2018
U.S. locations
2
States / cities
Washington D.C., District of Columbia • Syracuse, New York
Source: ClinicalTrials.gov public record
Updated Nov 8, 2018 · Synced Sep 24, 2026, 3:54 AM 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 8, 2011 · Synced Sep 24, 2026, 3:54 AM 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 26, 2014 · Synced Sep 24, 2026, 3:54 AM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

Pharmacokinetic Study of Antiretroviral Drugs and Related Drugs During and After Pregnancy

NCT00042289
View directory record Official record
Conditions
HIV Infections
Interventions
atazanavir/cobicistat, darunavir/ritonavir dosage #1, darunavir/ritonavir dosage #2, darunavir/ritonavir dosage #3, elvitegravir/cobicistat, dolutegravir, tenofovir alafenamide fumarate (TAF), TAF w/cobicistat, TAF w/cobicistat or ritonavir, efavirenz, darunavir/cobicistat, lopinavir/ritonavir dosage #1, atazanavir/ritonavir/tenofovir dosage #1, rifampicin, ethambutol, isoniazid, pyrazinamide, kanamycin, amikacin, capreomycin, moxifloxacin, levoflaxacin, ofloxacin, ethionamide/prothionamide, terizidone/cycloserine, para-aminosalicylic acid (PAS), high dose INH, bedaquiline, clofazamine, delamanid, linezolid, pretomanid, ethinyl estradiol, etonogestrel implant, nevirapine, amprenavir, abacavir, lopinavir/ritonavir dosage #2, indinavir/ritonavir dosage #1, fosamprenavir/ritonavir, lopinavir/ritonavir dosage #3, atazanavir/ritonavir dosage #1, didanosine delayed release (Videx® EC), emtricitabine, tenofovir, nelfinavir dosage #1, tipranavir/ritonavir, lopinavir/ritonavir dosage #4, raltegravir, etravirine, maraviroc, atazanavir/ritonavir dosage #2, tenofovir/atazanavir/ritonavir dosage #2, nelfinavir dosage #2, indinavir/ritonavir dosage #2, rilpivirine, darunavir/ritonavir dosage #4
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
Not listed
Enrollment
1,578 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2003 – 2020
U.S. locations
39
States / cities
Birmingham, Alabama • La Jolla, California • Long Beach, California + 26 more
Source: ClinicalTrials.gov public record
Updated Dec 1, 2025 · Synced Sep 24, 2026, 3:54 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Dose Finding Confirmation of Atazanavir With Ritonavir and Efavirenz (ATV/RTV + EFV) in Healthy Subjects

NCT00357188
View directory record Official record
Conditions
HIV Infections, Protease Inhibitor
Interventions
Atazanavir Sulphate + Ritonavir, Atazanavir Sulphate + Ritonavir + Efavirenz
Drug
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
18 Years to 50 Years
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006
U.S. locations
1
States / cities
Hamilton, New Jersey
Source: ClinicalTrials.gov public record
Updated Apr 7, 2011 · Synced Sep 24, 2026, 3:54 AM EDT
Completed No phase listed Observational

Tenofovir, Emtricitabine, Efavirenz and Atazanavir Pharmacokinetics in the Aging HIV-Infected Population

NCT01180075
View directory record Official record
Conditions
Human Immunodeficiency Virus
Interventions
tenofovir/emtricitabine/efavirenz (TDF/FTC/EFV), tenofovir/emtricitabine (TDF/FTC), Atazanavir (ATV), Ritonavir, Phlebotomy
Drug · Procedure
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years and older
Enrollment
85 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Dec 1, 2014 · Synced Sep 24, 2026, 3:54 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Drug Interaction Study

NCT00646776
View directory record Official record
Conditions
Antivirals/HIV
Interventions
Rifabutin, Rifabutin + Atazanavir + Ritonavir
Drug
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
18 Years to 50 Years
Enrollment
85 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008
U.S. locations
1
States / cities
Hamilton, New Jersey
Source: ClinicalTrials.gov public record
Updated Jan 30, 2013 · Synced Sep 24, 2026, 3:54 AM EDT
Completed Phase 4 Interventional

Boosted Atazanavir and Truvada Given Once-Daily - BATON Study

NCT00224445
View directory record Official record
Conditions
HIV Infections
Interventions
Truvada, Atazanavir, Ritonavir
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2007
U.S. locations
1
States / cities
Foster City, California
Source: ClinicalTrials.gov public record
Updated Jan 9, 2013 · Synced Sep 24, 2026, 3:54 AM EDT
Completed Phase 4 Interventional Results available

IMPAACT 1077HS: Examining Benefits of HAART Continuation in Postpartum Women

NCT00955968
View directory record Official record
Conditions
HIV Infection
Interventions
Highly active antiretroviral therapy (HAART)
Drug
Lead sponsor
International Maternal Pediatric Adolescent AIDS Clinical Trials Group
Network
Eligibility
18 Years and older · Female only
Enrollment
1,653 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2016
U.S. locations
26
States / cities
Alhambra, California • Los Angeles, California • San Diego, California + 20 more
Source: ClinicalTrials.gov public record
Updated Aug 13, 2023 · Synced Sep 24, 2026, 3:54 AM 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 5, 2013 · Synced Sep 24, 2026, 3:54 AM EDT
Completed Phase 3 Interventional Results available

Study to Evaluate Switching From Regimens Consisting of a Ritonavir-boosted Protease Inhibitor (PI) and Two Nucleoside Reverse Transcriptase Inhibitors (NRTIs) to a Fixed-dose Tablet Containing Emtricitabine/Rilpivirine/Tenofovir DF

NCT01252940
View directory record Official record
Conditions
HIV-1 Infection
Interventions
FTC/RPV/TDF, PI, RTV, NRTIs
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years and older
Enrollment
482 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
66
States / cities
Birmingham, Alabama • Phoenix, Arizona • Little Rock, Arkansas + 45 more
Source: ClinicalTrials.gov public record
Updated Dec 3, 2015 · Synced Sep 24, 2026, 3:54 AM 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 7, 2011 · Synced Sep 24, 2026, 3:54 AM 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 28, 2017 · Synced Sep 24, 2026, 3:54 AM EDT
Completed Phase 3 Interventional

Atazanavir or Boosted Atazanavir Substitution for Ritonavir Boosted PI in Patients With Hyperlipidemia

NCT00160329
View directory record Official record
Conditions
Hyperlipidemia, HIV Infections
Interventions
Atazanavir
Drug
Lead sponsor
Stanford University
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2009
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Jul 20, 2011 · Synced Sep 24, 2026, 3:54 AM EDT