Cobicistat-containing Highly Active Antiretroviral Regimens in HIV-1 Infected Patients With Mild to Moderate Renal Impairment

This study is ongoing, but not recruiting participants.
Information provided by (Responsible Party):
Gilead Sciences Identifier:
First received: May 11, 2011
Last updated: July 22, 2014
Last verified: July 2014

This study is to characterize the effect of Cobicistat based regimens on parameters of renal function in HIV infected patients with mild to moderate renal impairment, and also, to assess the safety and tolerability of those regimens in order to generate appropriate dosing recommendations.

Condition Intervention Phase
Acquired Immunodeficiency Syndrome
HIV Infections
Drug: COBI
Drug: ATV
Drug: DRV
Drug: NRTI
Phase 3

Study Type: Interventional
Study Design: Allocation: Non-Randomized
Endpoint Classification: Safety/Efficacy Study
Intervention Model: Parallel Assignment
Masking: Open Label
Primary Purpose: Treatment
Official Title: A Phase 3 Open-label Safety Study of Cobicistat-containing Highly Active Antiretroviral Regimens in HIV-1 Infected Patients With Mild to Moderate Renal Impairment

Resource links provided by NLM:

Further study details as provided by Gilead Sciences:

Primary Outcome Measures:
  • Change from baseline in estimated glomerular filtration rate [ Time Frame: Baseline to Week 24 ] [ Designated as safety issue: Yes ]

Secondary Outcome Measures:
  • Proportion of participants achieving virologic response (HIV-1 RNA < 50 copies/mL) [ Time Frame: Weeks 24, 48 and 96 ] [ Designated as safety issue: No ]
  • Long term effect of COBI-containing regimens on renal parameters [ Time Frame: Weeks 24, 48, and 96 ] [ Designated as safety issue: Yes ]
    Safety data regarding renal parameters will be summarized.

  • Incidence of adverse events and graded laboratory abnormalities [ Time Frame: Baseline to Week 96 plus 30 days ] [ Designated as safety issue: No ]
    All safety data will be summarized by treatment group.

  • Plasma pharmacokinetics (PK) parameters of COBI as measured by Cmax, Tmax, Clast, Tlast, Ctau, λz, AUCtau, and T½. [ Time Frame: Baseline, Weeks, 2, 4, and 24 ] [ Designated as safety issue: No ]
    • Cmax is defined as the maximum observed concentration of drug in plasma
    • Tmax is defined as the time of Cmax
    • Clast is defined as the last observable concentration of drug
    • Tlast is defined as the time of Clast
    • Ctau is defined as the observed drug concentration at the end of the dosing interval
    • λz is defined as the terminal elimination rate constant
    • AUCtau is defined as the concentration of drug over time (area under the plasma concentration versus time curve over the dosing interval)
    • t1/2 is defined as the estimate of the terminal elimination half-life of the drug

Estimated Enrollment: 100
Study Start Date: May 2011
Estimated Study Completion Date: December 2014
Primary Completion Date: January 2013 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: EVG/COBI/FTC/TDF
Participants will receive EVG/COBI/FTC/TDF STR for 96 weeks.
Cohort 1: Single tablet regimen of elvitegravir (EVG) 150 mg/cobicistat (COBI) 150 mg/emtricitabine (FTC) 200 mg/tenofovir disoproxil fumarate (TDF) 300 mg
Other Name: Stribild®
Experimental: ATV/co or DRV/co
Participants will receive ATV/co or DRV/co, plus 2 NRTIs, for 96 weeks.
Drug: COBI
Cobicistat (COBI, /co) 150 mg tablet administered with food orally once daily
Other Name: Tybost™
Drug: ATV
Atazanavir (ATV) 300 mg tablet administered orally once daily
Other Name: Reyataz®
Drug: DRV
Darunavir (DRV) 800 mg tablet administered orally once daily
Other Name: Prezista®
Drug: NRTI
Participants will receive 2 invesigator-selected nucleoside reverse transcriptase inhibitors (NRTIs), which may include abacavir (ABC), combivir, didanosine (DDI), emtricitabine (FTC), epzicom, lamivudine (3TC), tenofovir disoproxil fumarate (TDF), or truvada (TVD), administered according to prescribing information.


Ages Eligible for Study:   18 Years and older
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No

Inclusion Criteria:

Cohort 1 (Treatment Naïve)

  • Plasma HIV-1 RNA levels ≥ 1,000 copies/mL at screening
  • Screening genotype report must show sensitivity to FTC and TDF
  • No prior use of any approved or investigational antiretroviral drug for any length of time

Cohort 2 (Pharmacoenhancer Switch)

  • Subjects must be receiving atazanavir (ATV) 300 mg/ritonavir (RTV) 100 mg plus 2 NRTIs OR darunavir (DRV) 800 mg/RTV 100 mg plus 2 NRTIs for at least 6 months prior to screening
  • Plasma HIV-1 RNA concentrations at undetectable levels in the 6 months preceding the screening visit and have HIV-1 RNA < 50 copies/mL at screening
  • Subjects experiencing intolerance to RTV (as determined by the Investigator)

Cohort 1 and Cohort 2

  • The ability to understand and sign a written informed consent form
  • Normal ECG
  • Mild to Moderate renal function
  • Stable renal function
  • Hepatic transaminases (AST and ALT) ≤ 5 x the upper limit of the normal range (ULN)
  • Total bilirubin ≤ 1.5 mg/dL, or normal direct bilirubin (subjects with documented Gilbert's Syndrome or hyperbilirubinemia due to atazanavir therapy may have total bilirubin up to 5 x upper limit of normal)
  • Adequate hematologic function
  • Serum amylase ≤ 5 x ULN
  • Males and females of childbearing potential must agree to utilize highly effective contraception methods from screening throughout the duration of study treatment and for 30 days following the last dose of study drug
  • Age ≥ 18 years

Exclusion Criteria:

  • New AIDS defining condition diagnosed within the 30 days prior to screening
  • Receiving drug treatment for Hepatitis C, or anticipated to receive treatment for Hepatitis C
  • Subjects experiencing decompensated cirrhosis
  • Females who are breastfeeding
  • Positive serum pregnancy test (female of childbearing potential)
  • Implanted defibrillator or pacemaker
  • Current alcohol or substance use judged by the Investigator to potentially interfere with subject study compliance
  • History of malignancy within the past 5 years or ongoing malignancy other than cutaneous Kaposi's sarcoma, basal cell carcinoma, or resected, non-invasive cutaneous squamous carcinoma
  • Active, serious infections (other than HIV 1 infection) requiring parenteral antibiotic or antifungal therapy within 30 days prior to Baseline
  • Receiving ongoing therapy with any of medications contraindicated for use with EVG, COBI, FTC, TDF, ATV, DRV; or subjects with any known allergies to the excipients of EVG/COBI/FTC/TDF STR, COBI tablets, atazanavir capsules or darunavir tablets or contraindicated for the 2 NRTIs as part of the Cohort 2 regimen
  • Participation in any other clinical trial without prior approval
  • Any other clinical condition or prior therapy that would make the subject unsuitable for the study or unable to comply with the dosing requirements
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT01363011

  Hide Study Locations
United States, Arizona
Spectrum Medical Group
Phoenix, Arizona, United States, 85012
United States, Arkansas
Health for Life Clinic
Little Rock, Arkansas, United States, 72207
United States, California
AHF Research Center
Beverly Hills, California, United States, 90211
Peter J. Ruane, M.D., Inc.
Los Angeles, California, United States, 90036
Kaiser Permanente
Los Angeles, California, United States, 90027
Anthony Mills, MD, Inc.
Los Angeles, California, United States, 90069
Orange Coast Medical Group
Newport Beach, California, United States, 92663
East Bay AIDS Center
Oakland, California, United States, 94609
University of California, Davis
Sacramento, California, United States, 01105
Metropolis Medical
San Francisco, California, United States, 94115
United States, Colorado
National Jewish Health
Denver, Colorado, United States, 80206
United States, Connecticut
Yale University School of Medicine AIDS Program
New Haven, Connecticut, United States, 06520
United States, District of Columbia
Whitman Walker Clinic
Washington, District of Columbia, United States, 20009
Medical Faculty Associates
Washington, District of Columbia, United States, 20037
United States, Florida
Therafirst Medical Center
Fort Lauderdale, Florida, United States, 33308
Gary J. Richmond.M.D.,P.A.
Fort Lauderdale, Florida, United States, 33316
Broward Health
Fort Lauderdale, Florida, United States, 33311
Midway Immunology and Research Center
Fort Pierce, Florida, United States, 34982
Orlando Immunology Center
Orlando, Florida, United States, 32803
IDOCF/ValueHealthMD, LLC
Orlando, Florida, United States, 32806
United States, Georgia
Infectious Disease Specialists of Atlanta
Decatur, Georgia, United States, 30033
Mercer University/ Mercer Medicine Clinical Research
Macon, Georgia, United States, 31201
United States, Illinois
Northstar Medical Center
Chicago, Illinois, United States, 60657
United States, Massachusetts
The Research Institute
Springfield, Massachusetts, United States, 01105
United States, Missouri
Central West Clinical Research, Inc.
St.Louis, Missouri, United States, 63108
United States, New Jersey
ID Care
Hillsborough, New Jersey, United States, 08844
United States, New York
North Shore University Hospital
Manhasset, New York, United States, 11030
Chelsea Village Medical
New York, New York, United States, 10011
Mount Sinai Downtown Comprehensive Health Program
New York, New York, United States, 10011
Rochester, New York, United States, 14607
United States, North Carolina
Carolinas Medical Center
Charlotte, North Carolina, United States, 28207
United States, Texas
Southwest Infectious Disease Clinical Research, Inc.
Addison, Texas, United States, 75001
Tarrant County Infectious Disease Associates
Fort Worth, Texas, United States, 76104
Therapeutic Concepts, PA
Houston, Texas, United States, 77004
Taylor Square Private Clinic
Darlinghurst, Australia, 2010
Infectious Diseases Unit - The Alfred Hospital
Melbourne, Australia, 3004
Holdsworth House Medical Practice
Sydney, Australia, 2010
Landeskrankenhaus Graz West
Graz, Austria, 8020
Otto Wagner Spital
Wien, Austria, 1140
Canada, Ontario
Sunnybrook Health Sciences Center
Toronto, Ontario, Canada, M4N3M5
Clinique Medicale du Quartier Latin
Montreal, Canada, H2L5B1
Dominican Republic
Instituto Dominicano de Estudio Virologicos
Santo Domingo, Dominican Republic, 99999
Center for HIV and Hepatogastroenterology
Düsseldorf, Germany, 40237
Hospital Civil de Guadalajara "Fray Antonio Alcalde"
Guadalajara, Mexico, 44280
Puerto Rico
Clinical Research Puerto Rico
San Juan, Puerto Rico, 00909
HOPE Clinical Research
San Juan, Puerto Rico, 00909
United Kingdom
Brighton and Sussex University Hospitals NHS Trust
Brighton, United Kingdom, BN2 1ES
St Stephen's AIDS Trust
London, United Kingdom, SW10 9NH
Barts & the London NHS Trust
London, United Kingdom, E1 1BB
Homerton University Hospital
London, United Kingdom, SE5 0DJ
Guy's King's and St. Thomas' School of Medicine
London, United Kingdom, SE5 9RJ
Sponsors and Collaborators
Gilead Sciences
Study Director: Javier Szwarcberg, MD Gilead Sciences
  More Information

No publications provided

Responsible Party: Gilead Sciences Identifier: NCT01363011     History of Changes
Other Study ID Numbers: GS-US-236-0118
Study First Received: May 11, 2011
Last Updated: July 22, 2014
Health Authority: United States: Food and Drug Administration

Keywords provided by Gilead Sciences:
Treatment Naive
Treatment Experienced

Additional relevant MeSH terms:
HIV Infections
Acquired Immunodeficiency Syndrome
Immunologic Deficiency Syndromes
Renal Insufficiency
Lentivirus Infections
Retroviridae Infections
RNA Virus Infections
Virus Diseases
Sexually Transmitted Diseases, Viral
Sexually Transmitted Diseases
Immune System Diseases
Slow Virus Diseases
Kidney Diseases
Urologic Diseases
Tenofovir disoproxil
Reverse Transcriptase Inhibitors
Nucleic Acid Synthesis Inhibitors
Enzyme Inhibitors
Molecular Mechanisms of Pharmacological Action
Pharmacologic Actions
Anti-Retroviral Agents
Antiviral Agents
Anti-Infective Agents
Therapeutic Uses
Anti-HIV Agents processed this record on September 18, 2014