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Showing 1–24 of 38 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: fosamprenavir (GW433908) Clear all
Completed Phase 3 Interventional Results available

Multicenter, Randomized, Double-Blind, Double-Dummy, Phase 3 Study of the Safety and Efficacy of Elvitegravir Versus Raltegravir

NCT00708162
View directory record Official record
Conditions
HIV Infection
Interventions
Elvitegravir, Raltegravir, EVG placebo, RAL placebo, Background regimen
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years and older
Enrollment
724 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2015
U.S. locations
94
States / cities
Phoenix, Arizona • Little Rock, Arkansas • Beverly Hills, California + 59 more
Source: ClinicalTrials.gov public record
Updated May 29, 2016 · Synced Sep 28, 2026, 10:11 AM EDT
Completed No phase listed Observational

IMPAACT P1080: Psychiatric and Antiretroviral Medication Concentrations in HIV-infected and Uninfected Children and Adolescents

NCT01232361
View directory record Official record
Conditions
ADHD, HIV
Interventions
Not listed
Lead sponsor
International Maternal Pediatric Adolescent AIDS Clinical Trials Group
Network
Eligibility
6 Years to 25 Years
Enrollment
127 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2016
U.S. locations
21
States / cities
Birmingham, Alabama • Long Beach, California • Los Angeles, California + 15 more
Source: ClinicalTrials.gov public record
Updated Aug 2, 2021 · Synced Sep 28, 2026, 10:11 AM EDT
Completed Phase 4 Interventional

A Randomized, Prospective Study of the Efficacy, Safety and Tolerability of Two Doses of GW433908Ritonavir Given With Abacavir/Lamivudine Fixed Dose Combination

NCT00335270
View directory record Official record
Conditions
HIV
Interventions
fos-amprenavir calcium, ritonavir, abacavir/lamivudine as Epzicom
Drug
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2007
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated May 13, 2013 · Synced Sep 28, 2026, 10:11 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Interaction of Buprenorphine With HIV Medications and Tuberculosis Medications

NCT00877591
View directory record Official record
Conditions
Opioid Dependency, HIV Infections
Interventions
Fosamprenavir/Ritonavir, Darunavir/Ritonavir, Rifampin, Rifabutin, Buprenorphine
Drug
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years and older
Enrollment
63 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2013
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated May 5, 2014 · Synced Sep 28, 2026, 10:11 AM EDT
Completed Phase 2 Interventional Results available

Study Of An Investigational Regimen Including FDA Approved HIV Drugs In HIV-Infected Pediatric Subjects

NCT00071760
View directory record Official record
Conditions
Infection, Human Immunodeficiency Virus, HIV Infections
Interventions
GW433908, ritonavir
Drug
Lead sponsor
ViiV Healthcare
Industry
Eligibility
4 Weeks to 2 Years
Enrollment
59 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2022
U.S. locations
2
States / cities
Jacksonville, Florida • Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Oct 9, 2023 · Synced Sep 28, 2026, 10:11 AM EDT
Not listed Phase 3 Interventional

Comparison of Two Dosing Regimens of GW433908/Ritonavir Versus Lopinavir/Ritonavir for 48 Weeks in HIV Patients Who Have Taken Protease Inhibitors and Experienced Virological Failure

NCT00025727
View directory record Official record
Conditions
HIV Infections
Interventions
Lopinavir/Ritonavir, Ritonavir, GW433908
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
13 Years and older
Enrollment
330 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2001
U.S. locations
32
States / cities
Phoenix, Arizona • Long Beach, California • Los Angeles, California + 25 more
Source: ClinicalTrials.gov public record
Updated Jun 23, 2005 · Synced Sep 28, 2026, 10:11 AM EDT
Completed Phase 4 Interventional Results available

Boosted Lexiva With Lovaza Adjunctive Therapy in Hypertriglyceridemic, HIV-Infected Subjects

NCT01010399
View directory record Official record
Conditions
Hypertriglyceridemia, HIV Infection
Interventions
Lovaza, fosamprenavir/ritonavir
Dietary Supplement · Drug
Lead sponsor
Felizarta, Franco, M.D.
Individual
Eligibility
18 Years and older
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
1
States / cities
Bakersfield, California
Source: ClinicalTrials.gov public record
Updated Apr 17, 2012 · Synced Sep 28, 2026, 10:11 AM EDT
Completed Phase 3 Interventional Results available

A Study To Assess GW433908 (Fosamprenavir) Containing Regimens In HIV-1 Infected Subjects

NCT00296504
View directory record Official record
Conditions
Infection, Human Immunodeficiency Virus
Interventions
fosamprenavir (GW433908), ritonavir
Drug
Lead sponsor
ViiV Healthcare
Industry
Eligibility
13 Years and older
Enrollment
753 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2010
U.S. locations
10
States / cities
Fountain Valley, California • San Francisco, California • Denver, Colorado + 6 more
Source: ClinicalTrials.gov public record
Updated Apr 18, 2013 · Synced Sep 28, 2026, 10:11 AM EDT
Completed Phase 4 Interventional

A Pharmacokinetic (PK) Study of a Combination of Indinavir, Ritonavir, and Amprenavir

NCT00148785
View directory record Official record
Conditions
HIV Infections
Interventions
Indinavir/Ritonavir/Fosamprenavir
Drug
Lead sponsor
Emory University
Other
Eligibility
18 Years and older
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2007
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Nov 10, 2013 · Synced Sep 28, 2026, 10:11 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 28, 2026, 10:11 AM EDT
Terminated Phase 2Phase 3 Interventional Results available

Two Part Study to Evaluate Pharmacokinetics, Safety, and Antiviral Activity of Elvitegravir Administered With a PI/r Background Regimen for ARV Treatment-Experienced Pediatric Participants

NCT01923311
View directory record Official record
Conditions
Acquired Immune Deficiency Syndrome (AIDS), HIV Infections
Interventions
EVG, Background regimen
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
4 Weeks to 17 Years
Enrollment
31 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2017
U.S. locations
3
States / cities
Aurora, Colorado • Durham, North Carolina • Memphis, Tennessee
Source: ClinicalTrials.gov public record
Updated Aug 8, 2018 · Synced Sep 28, 2026, 10:11 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

GSK1349572 Drug Interaction Study With Fosamprenavir/Ritonavir

NCT01209065
View directory record Official record
Conditions
Infections, Human Immunodeficiency Virus and Herpesviridae
Interventions
GSK1349572, Fosamprenavir, Ritonavir
Drug
Lead sponsor
ViiV Healthcare
Industry
Eligibility
18 Years to 65 Years
Enrollment
27 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Jan 18, 2017 · Synced Sep 28, 2026, 10:11 AM EDT
Completed Phase 3 Interventional

Observational Study Of A Protease Inhibitor (PI) Containing Regimen In Subjects With PI Mutations Selected During Prior Treatment With GW433908 (Fosamprenavir)

NCT00242840
View directory record Official record
Conditions
Infection, Human Immunodeficiency Virus I, HIV Infection
Interventions
No intervention; Observational study
Drug
Lead sponsor
ViiV Healthcare
Industry
Eligibility
13 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2006
U.S. locations
6
States / cities
Fort Lauderdale, Florida • Orlando, Florida • Tampa, Florida + 2 more
Source: ClinicalTrials.gov public record
Updated May 29, 2017 · Synced Sep 28, 2026, 10:11 AM EDT
Completed Phase 2Phase 3 Interventional Results available

Clinical Trial of CNS-targeted HAART (CIT2)

NCT00624195
View directory record Official record
Conditions
HIV Infections
Interventions
FDA Approved Antiretroviral Therapy (see list below)
Drug
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years and older
Enrollment
59 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2012
U.S. locations
5
States / cities
San Diego, California • San Francisco, California • Baltimore, Maryland + 2 more
Source: ClinicalTrials.gov public record
Updated Apr 22, 2014 · Synced Sep 28, 2026, 10:11 AM EDT
Active, not recruiting Phase 2Phase 3 Interventional

Study to Compare Bictegravir/Lenacapavir Versus Current Therapy in People With HIV-1 Who Are Successfully Treated With a Complicated Regimen

NCT05502341
View directory record Official record
Conditions
HIV-1-infection
Interventions
Bictegravir, Lenacapavir, BIC/LEN FDC, Stable Baseline Regimen
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years and older
Enrollment
689 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2028
U.S. locations
40
States / cities
Berkeley, California • Beverly Hills, California • Los Angeles, California + 34 more
Source: ClinicalTrials.gov public record
Updated Aug 9, 2026 · Synced Sep 28, 2026, 10:11 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 28, 2026, 10:11 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

An Interaction Study to Assess Drug Levels in Healthy Adult Subjects

NCT00764465
View directory record Official record
Conditions
Healthy
Interventions
Maraviroc, Fosamprenavir, Ritonavir
Drug
Lead sponsor
Garden State Infectious Disease Associates, PA
Other
Eligibility
18 Years to 64 Years
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008
U.S. locations
1
States / cities
Voorhees Township, New Jersey
Source: ClinicalTrials.gov public record
Updated Jan 28, 2016 · Synced Sep 28, 2026, 10:11 AM EDT
Recruiting Phase 2 Interventional

Fosamprenavir for Laryngopharyngeal Upper Airway Tissue Treatment and Enzyme Reduction

NCT04383262
View directory record Official record
Conditions
Laryngopharyngeal Reflux
Interventions
Fosamprenavir Calcium, Placebo
Drug · Other
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
18 Years to 64 Years
Enrollment
104 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Sep 9, 2026 · Synced Sep 28, 2026, 10:11 AM EDT
Completed Phase 3 Interventional

Study to Explore Safety And Tolerability of Fosamprenavir With or Without Ritonavir in Combination With TRIZIVIR or COMBIVIR

NCT00043888
View directory record Official record
Conditions
HIV Infections
Interventions
fosamprenavir, COMBIVIR, ritonavir, TRIZIVIR
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
13 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2003
U.S. locations
13
States / cities
Little Rock, Arkansas • Long Beach, California • Newport Beach, California + 8 more
Source: ClinicalTrials.gov public record
Updated Feb 11, 2013 · Synced Sep 28, 2026, 10:11 AM EDT
Completed Phase 3 Interventional

Fosamprenavir Versus Other Protease Inhibitors

NCT00094523
View directory record Official record
Conditions
Infection, Human Immunodeficiency Virus I
Interventions
Fosamprenavir
Drug
Lead sponsor
ViiV Healthcare
Industry
Eligibility
18 Years and older
Enrollment
314 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2007
U.S. locations
51
States / cities
Beverly Hills, California • Fresno, California • Laguna Beach, California + 42 more
Source: ClinicalTrials.gov public record
Updated Apr 17, 2018 · Synced Sep 28, 2026, 10:11 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 28, 2026, 10:11 AM EDT
Completed Phase 3 Interventional Results available

A Study in Underrepresented Patient Population or Regimen Tolerability: SUPPoRT

NCT00727597
View directory record Official record
Conditions
Human Immunodeficiency Virus Infections
Interventions
Efavirenz 600mg, Boosted Lexiva
Drug
Lead sponsor
Georgetown University
Other
Eligibility
18 Years and older
Enrollment
101 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Jul 1, 2013 · Synced Sep 28, 2026, 10:11 AM EDT
Completed Phase 4 Interventional Results available

"The Once A Day Protease Inhibitor Regimens"

NCT00242216
View directory record Official record
Conditions
HIV Infections
Interventions
ritonavir-boosted atazanavir, ritonavir-boosted fosamprenavir
Drug
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
18 Years and older
Enrollment
76 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2010
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jan 14, 2014 · Synced Sep 28, 2026, 10:11 AM EDT
Completed Phase 3 Interventional Results available

Study to Evaluate Switching to Elvitegravir/Cobicistat/Emtricitabine/Tenofovir Alafenamide (E/C/F/TAF) Fixed Dose Combination (FDC) in Virologically-Suppressed HIV-1 Infected Adults Harboring the Archived Isolated NRTI Resistance Mutation M184V/M184I

NCT02616029
View directory record Official record
Conditions
HIV-1 Infection
Interventions
E/C/F/TAF
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years and older
Enrollment
66 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
3
States / cities
Ft. Pierce, Florida • Orlando, Florida • West Palm Beach, Florida
Source: ClinicalTrials.gov public record
Updated Jul 22, 2020 · Synced Sep 28, 2026, 10:11 AM EDT