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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

ClinicalTrials.gov ID: NCT00892437

Public ClinicalTrials.gov record NCT00892437. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.

ClinicalTrials.gov public records Last synced Oct 17, 2026, 7:35 AM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Official title

A Phase 2, Randomized, Double-Blinded Study of the Safety and Efficacy of GS-9350-boosted Atazanavir (ATV/GS-9350) Compared to Ritonavir-boosted Atazanavir (ATV/r) in Combination With Emtricitabine/Tenofovir Disoproxil Fumarate (FTC/TDF) in HIV-1 Infected, Antiretroviral Treatment-Naive Adults

Brief summary

Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.

The objective of this study is to evaluate the safety and efficacy of a regimen containing cobicistat-boosted atazanavir (ATV+COBI) plus emtricitabine/tenofovir disoproxil fumarate (Truvada®; FTC/TDF) versus ritonavir-boosted atazanavir (ATV+RTV) plus FTC/TDF in HIV-1 infected, antiretroviral treatment-naive adults. Participants will be randomized in a 2:1 ratio. Randomization will be stratified by HIV-1 RNA level (≤ 100,000 copies/mL or \> 100,000 copies/mL) at screening. After Week 48, participants will continue to take their blinded study drug and attend visits every 12 weeks until treatment assignments are unblinded, at which point all participants will return for an unblinding visit and be given the option to participate in an open-label rollover extension and receive ATV+COBI+FTC/TDF until COBI tablets become commercially available, or until Gilead Sciences elects to terminate the study.

Study identification

NCT ID
NCT00892437
Recruitment status
Completed
Study type
Interventional
Phase
Phase 2
Lead sponsor
Gilead Sciences
Industry
Enrollment
85 participants

Conditions and interventions

Interventions

Drug

Eligibility (public fields only)

Age range
18 Years and older
Sex
All
Healthy volunteers
Healthy volunteers not accepted

This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.

Study timeline

Start date
May 2009 (Type not available)
Primary completion
Dec 2009 (Actual)
Completion
Jan 2015 (Actual)
Last update posted
Feb 15, 2016

2009 – 2015

United States locations

U.S. sites
31
U.S. states
16
U.S. cities
26
Facility City State ZIP Site status
Southwest Center for HIV/AIDS Phoenix Arizona 85006 —
Health for Life Clinic, PLLC Little Rock Arkansas 72207 —
AIDS Healthcare Foundation-Research Center Beverly Hills California 90804 —
The Living Hope Foundation Long Beach California 90813 —
Peter J. Ruane, MD, Inc. Los Angeles California 90036 —
Orange Coast Medical Group Newport Beach California 92663 —
David J. Shamblaw, MD Inc. San Diego California 92103 —
Metropolis Medical San Francisco California 94115 —
Denver Infectious Disease Consultants, PLLC Denver Colorado 80220 —
Dupont Circle Physicians Group Washington D.C. District of Columbia 20009 —
Whitman Walker Clinic Washington D.C. District of Columbia 20009 —
Capital Medical Associates PC Washington D.C. District of Columbia 20036 —
Gary Richmond, MD, PA, Inc. Fort Lauderdale Florida 33316 —
Wohlfeiler, Piperato and Associates, LLC Miami Beach Florida 33139 —
ValuehealthMD, LLC Orlando Florida 32806 —
St. Joseph's Comprehensive Research Institute Tampa Florida 33614 —
AIDS Research Consortium of Atlanta Atlanta Georgia 30308 —
Infectious Disease Specialists of Atlanta (IDSA) Decatur Georgia 30033 —
Northstar Medical Center Chicago Illinois 60657 —
Chase Brexton Health Services, Inc. Baltimore Maryland 21201 —
Be Well Medical Center Berkley Michigan 48072 —
Central West Healthcare St Louis Missouri 63108 —
Southampton Healthcare, Inc. St Louis Missouri 63139 —
Saint Michael's Medical Center Newark New Jersey 07102 —
Southwest C.A.R.E. Center Santa Fe New Mexico 87505 —
Rosedale Infectious Diseases Huntersville North Carolina 28078 —
Nicholaos Bellos, MD, PA Dallas Texas 75204 —
AIDS Arms/ Peabody Health Center Dallas Texas 75215 —
Gordon E. Crofoot, MD, PA Houston Texas 77098 —
Therapeutic Concepts, P.A. Houston Texas 77478 —
TribalMed Seattle Washington 98103 —

Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.

About this trial record page

What this page shows
Public field values for ClinicalTrials.gov record NCT00892437, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
What this page does not do
No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
Where the data comes from
Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
Last refresh
Last update posted Feb 15, 2016 · Synced Oct 17, 2026

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Open the official record

The complete public registry record, listed eligibility criteria, and available contact information for NCT00892437 live on ClinicalTrials.gov.

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