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A Simplification Study of Unboosted Reyataz With Epzicom (ASSURE) (ASSURE)

Primary Purpose

Infection, Human Immunodeficiency Virus

Status
Completed
Phase
Phase 4
Locations
International
Study Type
Interventional
Intervention
Reyataz + Norvir + Truvada
Reyataz + Epzicom
Sponsored by
ViiV Healthcare
About
Eligibility
Locations
Arms
Outcomes
Full info

About this trial

This is an interventional treatment trial for Infection, Human Immunodeficiency Virus focused on measuring HIV-1, HIV

Eligibility Criteria

18 Years - undefined (Adult, Older Adult)All SexesDoes not accept healthy volunteers

Inclusion Criteria:

  • Subject is an adult (greater than or equal to 18 years) with documented HIV-1 infection
  • Subject is a male or female of non-childbearing potential (physiologically incapable of becoming pregnant, is pre-menarchal or post-menopausal) or child-bearing potential with a negative pregnancy test who agrees to avoid pregnancy by sexual abstinence or utilization of a highly effective method of birth control throughout the study period
  • Subject is receiving a once-daily regimen of ATV (300mg) + RTV (100mg) + TDF/FTC (300mg/200mg) for at least 6 months prior to or by the first day of screening. ATV + RTV + TDF/FTC must be the subejct's INITIAL regimen or FIRST or SECOND SWITCH regimen. If ATV + RTV + TDF/FTC is subject's first or second switch regimen, then subject may ONLY have received the following prior regimens: a) any currently licensed non-nucleoside reverse transcriptase inhibitor (NNRTI) + TDF/FTC or ZDV/3TC; b) RTV-boosted PI with TDF/FTC or ZDV/3TC; or c) an alternative regimen not listed above after approval by Sponsor.
  • Subject is virologically suppressed on ATV + RTV + TDF/FTC defined as HIV-1 RNA </=75 copies/mL at 2 consecutive timepoints, one of which is at Screening and the other at least 28 days prior to Screening

Exclusion Criteria:

  • Subject has evidence of virologic failure
  • Subject has any known HIV genotyping results indicating HIV virus contains any of the following resistance mutations in reverse transcriptase including K65R, K70E, L74V, M184I/V or Y115F, a combination of two or more thymidine analog mutations including M41L, D67N, K70R, K219Q or E that include changes at either L210 or T215), or 3 or more of the following HIV-1 protease mutations associated with atazanavir resistance: D30, V32, M36, M46, I47, G48, I50, I54, A71, G73, V77, V82, I84, N88, and L90
  • Subject is HLA-B*5701 positive
  • Subject has hypersensitivity to any component of the study drugs
  • SUbject is pregnant or breastfeeding
  • Subject is enrolled in one or more investigational drug protocols within 30 days of screening
  • Subject has an active Center for Disease Control and Prevention (CDC) Category C disease, except cutaneous Kaposi's sarcoma not requiring systemic therapy during the trial
  • Subject has ongoing clinically relevant hepatitis at screening and/or positive for Hepatitis B (+ HbsAg)
  • Subject has a creatinine clearance <50 mL/min via the Cockcroft-Gault method
  • Subject has a verified Grade 4 laboratory abnormality at screening unless the Investigator can provide a compelling explanation (e.g. elevated CPK due to exercise) for the laboratory result(s) and has the assent of the Sponsor
  • Subject has any other laboratory abnormality or medical condition at screening, which, in the opinion of the investigator, would preclude the subject's participation in the study
  • Subject has had an immunization within 30 days prior to first dose of investigational product
  • Subject has had any exposure to treatment with immunomodulating agents (such as systemic corticosteroids, interleukins, or interferons) or receipt of an HIV-1 immunotherapeutic vaccine within 90 days prior to screening. Subjects using inhaled corticosteroids or short-course systemic corticosteroids (less than or equal to 14 days) are eligible for enrollment.
  • Subject has had treatment with radiation therapy or cytotoxic chemotherapeutic agents within 90 days prior to screening, or has an anticipated need for these agents within the study period
  • Subject has had treatment within 30 days prior to first dose of investigational product for or an anticipated need during the study of any medications which can have interactions with the study medications, TDF, FTC, ABC, 3TC, ATV and/or RTV, as described in current product labelling
  • Subject has had treatment with any previous abacavir-containing regimen

Sites / Locations

  • GSK Investigational Site
  • GSK Investigational Site
  • GSK Investigational Site
  • GSK Investigational Site
  • GSK Investigational Site
  • GSK Investigational Site
  • GSK Investigational Site
  • GSK Investigational Site
  • GSK Investigational Site
  • GSK Investigational Site
  • GSK Investigational Site
  • GSK Investigational Site
  • GSK Investigational Site
  • GSK Investigational Site
  • GSK Investigational Site
  • GSK Investigational Site
  • GSK Investigational Site
  • GSK Investigational Site
  • GSK Investigational Site
  • GSK Investigational Site
  • GSK Investigational Site
  • GSK Investigational Site
  • GSK Investigational Site
  • GSK Investigational Site
  • GSK Investigational Site
  • GSK Investigational Site
  • GSK Investigational Site
  • GSK Investigational Site
  • GSK Investigational Site
  • GSK Investigational Site
  • GSK Investigational Site
  • GSK Investigational Site
  • GSK Investigational Site
  • GSK Investigational Site
  • GSK Investigational Site
  • GSK Investigational Site
  • GSK Investigational Site
  • GSK Investigational Site
  • GSK Investigational Site
  • GSK Investigational Site
  • GSK Investigational Site
  • GSK Investigational Site
  • GSK Investigational Site
  • GSK Investigational Site
  • GSK Investigational Site
  • GSK Investigational Site

Arms of the Study

Arm 1

Arm 2

Arm Type

Experimental

Active Comparator

Arm Label

ATV + ABC/3TC

ATV + RTV + TDF/FTC

Arm Description

Subjects will change to ATV 400mg administered as two 200mg capsules orally, once daily and to the fixed-dose combination tablet of ABC 600mg/3TC 300mg (EPZICOM) administered as one tablet orally, once daily for 48 weeks. The subject's pre-study RTV will be discontinued.

Subjects will continue their pre-study therapy, un-modified, of ATV 300mg administered as one capsule orally, once daily plus RTV 100mg administered orally, once daily plus fixed dose combination tablet tenofovir 300mg/emtricitabine 200mg administered as one tablet orally, once daily for 48 weeks.

Outcomes

Primary Outcome Measures

Percentage of Participants (PAR) Who Achieved Plasma HIV-1 RNA <50 Copies (c)/Milliliter (mL) at the Week 24 Visit: TLOVR Analysis
The percentage of PAR with HIV-1 RNA virus <50 c/mL determined from blood samples drawn at Week 24 was tabulated by treatment arm with stratification by initial antiretroviral treatment. Per TLOVR algorithm, responders were PAR with confirmed viral load <50 c/mL who had not met any non-responder criterion. Non-responders were PAR who never achieved confirmed HIV RNA <50 c/mL, prematurely discontinued study or study medication for any reason, had confirmed rebound to at least 50 c/mL, or had an unconfirmed HIV RNA of at least 50 c/mL at the last visit.

Secondary Outcome Measures

Percentage of Participants (PAR) Who Achieved Plasma HIV-1 RNA <50 c/mL at the Week 24 Visit: Observed, M/D=F, and SNAPSHOT Analyses
The percentage of PAR with HIV-1 RNA virus <50 c/mL determined from blood samples drawn through Week 24 was tabulated by treatment arm with stratification by initial antiretroviral treatment using specific analysis methods.
Percentage of Participants (PAR) Who Achieved Plasma HIV-1 RNA <50 c/mL at the Week 48 Visit: TLOVR, Observed, M/D=F, and SNAPSHOT Analyses
The percentage of PAR with HIV-1 RNA virus <50 c/mL determined from blood samples drawn at Week 48 was tabulated by treatment arm with stratification by initial antiretroviral treatment using specific analysis methods.
Percentage of Participants (PAR) Who Achieved Plasma HIV-1 RNA <400 c/mL at the Week 24 Visit: TLOVR Analysis
The percentage of PAR with HIV-1 RNA virus <400 c/mL determined from blood samples drawn at Week 24 was tabulated by treatment arm with stratification by initial antiretroviral treatment. Per TLOVR algorithm, responders were PAR with confirmed viral load <400 c/mL who had not met any non-responder criterion. Non-responders were PAR who never achieved confirmed HIV RNA <400 c/mL, prematurely discontinued study or study medication for any reason, had confirmed rebound to at least 400 c/mL, or had an unconfirmed HIV RNA of at least 400 c/mL at the last visit.
Percentage of Participants (PAR) Who Achieved Plasma HIV-1 RNA <400 c/mL at the Week 48 Visit: TLOVR Analysis
The percentage of PAR with HIV-1 RNA virus <400 c/mL determined from blood samples drawn at Week 48 was tabulated by treatment arm with stratification by initial antiretroviral treatment. Per TLOVR algorithm, responders were PAR with confirmed viral load <400 c/mL who had not met any non-responder criterion. Non-responders were PAR who never achieved confirmed HIV RNA <400 c/mL, prematurely discontinued study or study medication for any reason, had confirmed rebound to at least 400 c/mL, or had an unconfirmed HIV RNA of at least 400 c/mL at the last visit.
Percentage of Participants (PAR) Who Achieved Plasma HIV-1 RNA <400 c/mL at the Week 24 Visit: Observed, MD=F, and SNAPSHOT Analyses
The percentage of PAR with HIV-1 RNA virus <400 c/mL determined from blood samples drawn at Week 24 was tabulated by treatment arm with stratification by initial antiretroviral treatment using specific analysis methods.
Percentage of Participants (PAR) Who Achieved Plasma HIV-1 RNA <400 c/mL at the Week 48 Visit: Observed, MD=F, and SNAPSHOT Analyses
The percentage of PAR with HIV-1 RNA virus <400 c/mL determined from blood samples drawn at Week 48 was tabulated by treatment arm with stratification by initial antiretroviral treatment using specific analysis methods.
Change From Baseline in HIV-1 RNA at Week 24
Change from Baseline was calculated as the Week 24 value minus the Baseline value. Blood was drawn to analyze for plasma HIV viral load.
Change From Baseline in HIV-1 RNA at Week 48
Change from Baseline was calculated as the Week 48 value minus the Baseline value. Blood was drawn to analyze for plasma HIV viral load.
Change From Baseline in CD4+ Cell Count at Week 24
Blood was drawn to analyze for CD4+ cell count. A CD4+ cell is a T lymphocyte that carries the CD4 antigen. Immunologic response was assessed by CD4+ counts. Change from Baseline was calculated as the Week 24 value minus the Baseline value.
Change From Baseline in CD4+ Cell Count at Week 48
Blood was drawn to analyze for CD4+ cell count. A CD4+ cell is a T lymphocyte that carries the CD4 antigen. Immunologic response was assessed by CD4+ counts. Change from Baseline was calculated as the Week 48 value minus the Baseline value.
Change From Baseline in Fasting Triglycerides, Total Cholesterol, High-density Lipoprotein (HDL) Cholesterol, and Low-density Lipoprotein (LDL) Cholesterol at Week 24
Triglycerides, total cholesterol, HDL cholesterol, and LDL cholesterol levels were measured at Week 24. A Fasting blood sample was drawn to analyze for lipids. Change from Baseline was calculated as the Week 24 value minus the Baseline value for each parameter.
Change From Baseline in Cholesterol/HDL Ratio at Week 24
A Fasting blood sample was drawn to analyze for lipids. Change from Baseline was calculated as the Week 24 value minus the Baseline value.
Change From Baseline in Fasting Triglycerides, Total Cholesterol, High-density Lipoprotein (HDL) Cholesterol, and Low-density Lipoprotein (LDL) Cholesterol at Week 48
Triglycerides, total cholesterol, HDL cholesterol, and LDL cholesterol levels were measured or calculated at Week 48. A fasting blood sample was drawn to analyze for lipids. Change from Baseline was calculated as the Week 48 value minus the Baseline value for each parameter.
Change From Baseline in Cholesterol/HDL Ratio at Week 48
A fasting blood sample was drawn to analyze for lipids. Change from Baseline was calculated as the Week 48 value minus the Baseline value for each parameter.
Number of Participants Who Met the Protocol-defined Confirmed Viral Failure Criteria Through Week 24
The number of participants that failed to remain virologically suppressed through 24 weeks on treatment was assessed. Viral failure is defined per protocol as confirmed HIV-1 RNA >=400 c/mL.
Number of Participants Who Met the Protocol-defined Confirmed Viral Failure Criteria Through Week 48
The number of participants that failed to remain virologically suppressed from baseline through 48 weeks on treatment was assessed. Viral failure is defined per protocol as confirmed HIV-1 RNA >=400 c/mL.
Number of Participants Who Experienced Death and/or Disease Progression
Death and clinical disease progression (as per CDC classification) were assessed from Baseline through Week 48. Disease progression is defined as progression from CDC Class A to B, Class A to C, or from Class B to C. AIDS CDC classifications are: Class A, Asymptomatic/lymphadenopathy/acute HIV; Class B, Symptomatic, not AIDS; Class C, AIDS indicator conditions. The CDC categorization of HIV/AIDS is based on the lowest documented CD4 cell count (Class A, >=500 cells per microliter [µl]; Class B, 200-499 cells/µl; Class C, <200 cells/µl) and on previously diagnosed HIV-related conditions.
Number of Confirmed Virologic Failure (VF) Participants (PAR) With Treatment-emergent HIV Genotypic Resistance in Reverse Transcriptase and Protease From Baseline Through Week 24
A blood sample was drawn for particiapants with confirmed VF >=400 c/mL. For each participant, the mutations found at the time of failure were compared with any mutations found in the blood sample at Baseline. New resistance-associated viral mutations defined by the International Acquired Immunodeficiency Syndrome Society-United States of America guidelines present at the time of failure were tabulated by drug class. NRTI, nucleoside reverse transcriptase inhibitor; NNRTI, non-nucleoside reverse transcriptase inhibitor; PI, protease inhibitor.
Number of Confirmed Virologic Failure (VF) Participants (PAR) With Treatment-emergent HIV Genotypic Resistance in Reverse Transcriptase and Protease From Baseline Through Week 48
A blood sample was drawn for particiapants with confirmed VF >=400 c/mL. For each participant, the mutations found at the time of failure were compared with any mutations found in the blood sample at Baseline. New resistance-associated viral mutations defined by the International Acquired Immunodeficiency Syndrome Society-United States of America guidelines present at the time of failure were tabulated by drug class. NRTI, nucleoside reverse transcriptase inhibitor; NNRTI, non-nucleoside reverse transcriptase inhibitor; PI, protease inhibitor.
Number of Confirmed Virologic Failure Participants (PAR) From Baseline Through Week 24 With the Indicated Treatment-emergent Reductions in Susceptibility to Abacavir, Lamivudine, Tenofovir, Emtricitabine, Atazanavir, or Ritonavir
A blood sample was drawn for participants failing to respond to therapy, and changes in drug susceptibility for HIV isolated from the participants for each drug used in the study were assessed. For each participant, the changes in drug susceptibility detected by phenotypic assay in virus from the sample collected at the time of failure was compared with drug susceptibility in the virus from the blood sample at Baseline.
Number of Confirmed Virologic Failure Participants (PAR) From Baseline Through Week 48 With the Indicated Treatment-emergent Reductions in Susceptibility to Abacavir, Lamivudine, Tenofovir, Emtricitabine, Atazanavir, or Ritonavir
A blood sample was drawn for participants failing to respond to therapy, and changes in drug susceptibility for HIV isolated from the participants for each drug used in the study were assessed. For each participant, the changes in drug susceptibility detected by phenotypic assay in virus from the sample collected at the time of failure was compared with drug susceptibility in the virus from the blood sample at Baseline.
Number of Participants With the Indicated Grade 2 to Grade 4 Adverse Events (AEs) Occurring at a Frequency of >=3% in Either Treatment Group
The National Cancer Institute Common Terminology Criteria for Adverse Events (CTCAE) Version 3.0 is a descriptive terminology that can be utilized for AE reporting. A grading (severity) scale is provided for each AE. Grade refers to the severity of the adverse event (AE). The CTCAE v3.0 displays Grades 1 through 5 with unique clinical descriptions of severity for each AE based on this general guideline: Grade 1, mild AE; Grade 2, moderate AE; Grade 3, severe AE; Grade 4, life-threatening or disabling AE; Grade 5, death related to the AE.
Number of Participants With the Indicated Grade 2 to Grade 4 Adverse Events (AEs) Occurring at a Frequency of >=3% in Either Treatment Group
The National Cancer Institute Common Terminology Criteria for Adverse Events (CTCAE) Version 3.0 is a descriptive terminology that can be utilized for AE reporting. A grading (severity) scale is provided for each AE. Grade refers to the severity of the adverse event (AE). The CTCAE v3.0 displays Grades 1 through 5 with unique clinical descriptions of severity for each AE based on this general guideline: Grade 1, mild AE; Grade 2, moderate AE; Grade 3, severe AE; Grade 4, life-threatening or disabling AE; Grade 5, death related to the AE.

Full Information

First Posted
April 8, 2010
Last Updated
October 24, 2013
Sponsor
ViiV Healthcare
Collaborators
GlaxoSmithKline
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1. Study Identification

Unique Protocol Identification Number
NCT01102972
Brief Title
A Simplification Study of Unboosted Reyataz With Epzicom (ASSURE)
Acronym
ASSURE
Official Title
A Prospective, Randomized, Multicenter, Open-Label Study to Compare the Efficacy and Safety of Simplifying From a Regimen of Atazanavir (ATV) + Ritonavir (RTV) + Tenofovir/Emtricitabine to ATV + Abacavir/Lamivudine Without RTV in Virologically Suppressed, HIV-1 Infected, HLA-B*5701 Negative Subjects
Study Type
Interventional

2. Study Status

Record Verification Date
September 2013
Overall Recruitment Status
Completed
Study Start Date
April 2010 (undefined)
Primary Completion Date
June 2012 (Actual)
Study Completion Date
December 2012 (Actual)

3. Sponsor/Collaborators

Responsible Party, by Official Title
Sponsor
Name of the Sponsor
ViiV Healthcare
Collaborators
GlaxoSmithKline

4. Oversight

Data Monitoring Committee
No

5. Study Description

Brief Summary
This study is designed to compare the efficacy and safety of simplifying therapy from a regimen of atazanavir (ATV) + ritonavir (RTV) + tenofovir/emtricitabine (TDF/FTC) to a regimen of ATV + abacavir sulfate/lamivudine (ABC/3TC) without RTV in virologically suppressed, HIV-1 infected, HLA-B*5701 negative subjects for 48 weeks.
Detailed Description
A prospective, randomized, multicenter, open-label study to compare the efficacy and safety of simplifying from a regimen of atazanavir (ATV) + ritonavir (RTV) + tenofovir/emtricitabine (TDF/FTC) to ATV + abacavir sulfate/lamivudine (ABC/3TC) without RTV for 48 weeks in virologically suppressed, HIV-1 infected, HLA-B*5701 negative subjects. ViiV Healthcare is the new sponsor of this study, and GlaxoSmithKline is in the process of updating systems to reflect the change in sponsorship.

6. Conditions and Keywords

Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Infection, Human Immunodeficiency Virus
Keywords
HIV-1, HIV

7. Study Design

Primary Purpose
Treatment
Study Phase
Phase 4
Interventional Study Model
Parallel Assignment
Masking
None (Open Label)
Allocation
Randomized
Enrollment
297 (Actual)

8. Arms, Groups, and Interventions

Arm Title
ATV + ABC/3TC
Arm Type
Experimental
Arm Description
Subjects will change to ATV 400mg administered as two 200mg capsules orally, once daily and to the fixed-dose combination tablet of ABC 600mg/3TC 300mg (EPZICOM) administered as one tablet orally, once daily for 48 weeks. The subject's pre-study RTV will be discontinued.
Arm Title
ATV + RTV + TDF/FTC
Arm Type
Active Comparator
Arm Description
Subjects will continue their pre-study therapy, un-modified, of ATV 300mg administered as one capsule orally, once daily plus RTV 100mg administered orally, once daily plus fixed dose combination tablet tenofovir 300mg/emtricitabine 200mg administered as one tablet orally, once daily for 48 weeks.
Intervention Type
Drug
Intervention Name(s)
Reyataz + Norvir + Truvada
Intervention Description
atazanavir 300mg + ritonavir 100mg + tenofovir 300mg/emtricitabine 200mg
Intervention Type
Drug
Intervention Name(s)
Reyataz + Epzicom
Intervention Description
atazanavir 400mg + abacavir 600mg/lamivudine 300mg
Primary Outcome Measure Information:
Title
Percentage of Participants (PAR) Who Achieved Plasma HIV-1 RNA <50 Copies (c)/Milliliter (mL) at the Week 24 Visit: TLOVR Analysis
Description
The percentage of PAR with HIV-1 RNA virus <50 c/mL determined from blood samples drawn at Week 24 was tabulated by treatment arm with stratification by initial antiretroviral treatment. Per TLOVR algorithm, responders were PAR with confirmed viral load <50 c/mL who had not met any non-responder criterion. Non-responders were PAR who never achieved confirmed HIV RNA <50 c/mL, prematurely discontinued study or study medication for any reason, had confirmed rebound to at least 50 c/mL, or had an unconfirmed HIV RNA of at least 50 c/mL at the last visit.
Time Frame
Week 24
Secondary Outcome Measure Information:
Title
Percentage of Participants (PAR) Who Achieved Plasma HIV-1 RNA <50 c/mL at the Week 24 Visit: Observed, M/D=F, and SNAPSHOT Analyses
Description
The percentage of PAR with HIV-1 RNA virus <50 c/mL determined from blood samples drawn through Week 24 was tabulated by treatment arm with stratification by initial antiretroviral treatment using specific analysis methods.
Time Frame
Week 24
Title
Percentage of Participants (PAR) Who Achieved Plasma HIV-1 RNA <50 c/mL at the Week 48 Visit: TLOVR, Observed, M/D=F, and SNAPSHOT Analyses
Description
The percentage of PAR with HIV-1 RNA virus <50 c/mL determined from blood samples drawn at Week 48 was tabulated by treatment arm with stratification by initial antiretroviral treatment using specific analysis methods.
Time Frame
Week 48
Title
Percentage of Participants (PAR) Who Achieved Plasma HIV-1 RNA <400 c/mL at the Week 24 Visit: TLOVR Analysis
Description
The percentage of PAR with HIV-1 RNA virus <400 c/mL determined from blood samples drawn at Week 24 was tabulated by treatment arm with stratification by initial antiretroviral treatment. Per TLOVR algorithm, responders were PAR with confirmed viral load <400 c/mL who had not met any non-responder criterion. Non-responders were PAR who never achieved confirmed HIV RNA <400 c/mL, prematurely discontinued study or study medication for any reason, had confirmed rebound to at least 400 c/mL, or had an unconfirmed HIV RNA of at least 400 c/mL at the last visit.
Time Frame
Week 24
Title
Percentage of Participants (PAR) Who Achieved Plasma HIV-1 RNA <400 c/mL at the Week 48 Visit: TLOVR Analysis
Description
The percentage of PAR with HIV-1 RNA virus <400 c/mL determined from blood samples drawn at Week 48 was tabulated by treatment arm with stratification by initial antiretroviral treatment. Per TLOVR algorithm, responders were PAR with confirmed viral load <400 c/mL who had not met any non-responder criterion. Non-responders were PAR who never achieved confirmed HIV RNA <400 c/mL, prematurely discontinued study or study medication for any reason, had confirmed rebound to at least 400 c/mL, or had an unconfirmed HIV RNA of at least 400 c/mL at the last visit.
Time Frame
Week 48
Title
Percentage of Participants (PAR) Who Achieved Plasma HIV-1 RNA <400 c/mL at the Week 24 Visit: Observed, MD=F, and SNAPSHOT Analyses
Description
The percentage of PAR with HIV-1 RNA virus <400 c/mL determined from blood samples drawn at Week 24 was tabulated by treatment arm with stratification by initial antiretroviral treatment using specific analysis methods.
Time Frame
Week 24
Title
Percentage of Participants (PAR) Who Achieved Plasma HIV-1 RNA <400 c/mL at the Week 48 Visit: Observed, MD=F, and SNAPSHOT Analyses
Description
The percentage of PAR with HIV-1 RNA virus <400 c/mL determined from blood samples drawn at Week 48 was tabulated by treatment arm with stratification by initial antiretroviral treatment using specific analysis methods.
Time Frame
Week 48
Title
Change From Baseline in HIV-1 RNA at Week 24
Description
Change from Baseline was calculated as the Week 24 value minus the Baseline value. Blood was drawn to analyze for plasma HIV viral load.
Time Frame
Baseline and Week 24
Title
Change From Baseline in HIV-1 RNA at Week 48
Description
Change from Baseline was calculated as the Week 48 value minus the Baseline value. Blood was drawn to analyze for plasma HIV viral load.
Time Frame
Baseline and Week 48
Title
Change From Baseline in CD4+ Cell Count at Week 24
Description
Blood was drawn to analyze for CD4+ cell count. A CD4+ cell is a T lymphocyte that carries the CD4 antigen. Immunologic response was assessed by CD4+ counts. Change from Baseline was calculated as the Week 24 value minus the Baseline value.
Time Frame
Baseline and Week 24
Title
Change From Baseline in CD4+ Cell Count at Week 48
Description
Blood was drawn to analyze for CD4+ cell count. A CD4+ cell is a T lymphocyte that carries the CD4 antigen. Immunologic response was assessed by CD4+ counts. Change from Baseline was calculated as the Week 48 value minus the Baseline value.
Time Frame
Baseline and Week 48
Title
Change From Baseline in Fasting Triglycerides, Total Cholesterol, High-density Lipoprotein (HDL) Cholesterol, and Low-density Lipoprotein (LDL) Cholesterol at Week 24
Description
Triglycerides, total cholesterol, HDL cholesterol, and LDL cholesterol levels were measured at Week 24. A Fasting blood sample was drawn to analyze for lipids. Change from Baseline was calculated as the Week 24 value minus the Baseline value for each parameter.
Time Frame
Baseline and Week 24
Title
Change From Baseline in Cholesterol/HDL Ratio at Week 24
Description
A Fasting blood sample was drawn to analyze for lipids. Change from Baseline was calculated as the Week 24 value minus the Baseline value.
Time Frame
Baseline and Week 24
Title
Change From Baseline in Fasting Triglycerides, Total Cholesterol, High-density Lipoprotein (HDL) Cholesterol, and Low-density Lipoprotein (LDL) Cholesterol at Week 48
Description
Triglycerides, total cholesterol, HDL cholesterol, and LDL cholesterol levels were measured or calculated at Week 48. A fasting blood sample was drawn to analyze for lipids. Change from Baseline was calculated as the Week 48 value minus the Baseline value for each parameter.
Time Frame
Baseline and Week 48
Title
Change From Baseline in Cholesterol/HDL Ratio at Week 48
Description
A fasting blood sample was drawn to analyze for lipids. Change from Baseline was calculated as the Week 48 value minus the Baseline value for each parameter.
Time Frame
Baseline and Week 48
Title
Number of Participants Who Met the Protocol-defined Confirmed Viral Failure Criteria Through Week 24
Description
The number of participants that failed to remain virologically suppressed through 24 weeks on treatment was assessed. Viral failure is defined per protocol as confirmed HIV-1 RNA >=400 c/mL.
Time Frame
From Baseline to Week 24
Title
Number of Participants Who Met the Protocol-defined Confirmed Viral Failure Criteria Through Week 48
Description
The number of participants that failed to remain virologically suppressed from baseline through 48 weeks on treatment was assessed. Viral failure is defined per protocol as confirmed HIV-1 RNA >=400 c/mL.
Time Frame
From Baseline to Week 48
Title
Number of Participants Who Experienced Death and/or Disease Progression
Description
Death and clinical disease progression (as per CDC classification) were assessed from Baseline through Week 48. Disease progression is defined as progression from CDC Class A to B, Class A to C, or from Class B to C. AIDS CDC classifications are: Class A, Asymptomatic/lymphadenopathy/acute HIV; Class B, Symptomatic, not AIDS; Class C, AIDS indicator conditions. The CDC categorization of HIV/AIDS is based on the lowest documented CD4 cell count (Class A, >=500 cells per microliter [µl]; Class B, 200-499 cells/µl; Class C, <200 cells/µl) and on previously diagnosed HIV-related conditions.
Time Frame
From Baseline to Week 48
Title
Number of Confirmed Virologic Failure (VF) Participants (PAR) With Treatment-emergent HIV Genotypic Resistance in Reverse Transcriptase and Protease From Baseline Through Week 24
Description
A blood sample was drawn for particiapants with confirmed VF >=400 c/mL. For each participant, the mutations found at the time of failure were compared with any mutations found in the blood sample at Baseline. New resistance-associated viral mutations defined by the International Acquired Immunodeficiency Syndrome Society-United States of America guidelines present at the time of failure were tabulated by drug class. NRTI, nucleoside reverse transcriptase inhibitor; NNRTI, non-nucleoside reverse transcriptase inhibitor; PI, protease inhibitor.
Time Frame
From Baseline to Week 24
Title
Number of Confirmed Virologic Failure (VF) Participants (PAR) With Treatment-emergent HIV Genotypic Resistance in Reverse Transcriptase and Protease From Baseline Through Week 48
Description
A blood sample was drawn for particiapants with confirmed VF >=400 c/mL. For each participant, the mutations found at the time of failure were compared with any mutations found in the blood sample at Baseline. New resistance-associated viral mutations defined by the International Acquired Immunodeficiency Syndrome Society-United States of America guidelines present at the time of failure were tabulated by drug class. NRTI, nucleoside reverse transcriptase inhibitor; NNRTI, non-nucleoside reverse transcriptase inhibitor; PI, protease inhibitor.
Time Frame
From Baseline to Week 48
Title
Number of Confirmed Virologic Failure Participants (PAR) From Baseline Through Week 24 With the Indicated Treatment-emergent Reductions in Susceptibility to Abacavir, Lamivudine, Tenofovir, Emtricitabine, Atazanavir, or Ritonavir
Description
A blood sample was drawn for participants failing to respond to therapy, and changes in drug susceptibility for HIV isolated from the participants for each drug used in the study were assessed. For each participant, the changes in drug susceptibility detected by phenotypic assay in virus from the sample collected at the time of failure was compared with drug susceptibility in the virus from the blood sample at Baseline.
Time Frame
From Baseline to Week 24
Title
Number of Confirmed Virologic Failure Participants (PAR) From Baseline Through Week 48 With the Indicated Treatment-emergent Reductions in Susceptibility to Abacavir, Lamivudine, Tenofovir, Emtricitabine, Atazanavir, or Ritonavir
Description
A blood sample was drawn for participants failing to respond to therapy, and changes in drug susceptibility for HIV isolated from the participants for each drug used in the study were assessed. For each participant, the changes in drug susceptibility detected by phenotypic assay in virus from the sample collected at the time of failure was compared with drug susceptibility in the virus from the blood sample at Baseline.
Time Frame
From Baseline to Week 48
Title
Number of Participants With the Indicated Grade 2 to Grade 4 Adverse Events (AEs) Occurring at a Frequency of >=3% in Either Treatment Group
Description
The National Cancer Institute Common Terminology Criteria for Adverse Events (CTCAE) Version 3.0 is a descriptive terminology that can be utilized for AE reporting. A grading (severity) scale is provided for each AE. Grade refers to the severity of the adverse event (AE). The CTCAE v3.0 displays Grades 1 through 5 with unique clinical descriptions of severity for each AE based on this general guideline: Grade 1, mild AE; Grade 2, moderate AE; Grade 3, severe AE; Grade 4, life-threatening or disabling AE; Grade 5, death related to the AE.
Time Frame
From Baseline to Week 24
Title
Number of Participants With the Indicated Grade 2 to Grade 4 Adverse Events (AEs) Occurring at a Frequency of >=3% in Either Treatment Group
Description
The National Cancer Institute Common Terminology Criteria for Adverse Events (CTCAE) Version 3.0 is a descriptive terminology that can be utilized for AE reporting. A grading (severity) scale is provided for each AE. Grade refers to the severity of the adverse event (AE). The CTCAE v3.0 displays Grades 1 through 5 with unique clinical descriptions of severity for each AE based on this general guideline: Grade 1, mild AE; Grade 2, moderate AE; Grade 3, severe AE; Grade 4, life-threatening or disabling AE; Grade 5, death related to the AE.
Time Frame
From Baseline to Week 48

10. Eligibility

Sex
All
Minimum Age & Unit of Time
18 Years
Accepts Healthy Volunteers
No
Eligibility Criteria
Inclusion Criteria: Subject is an adult (greater than or equal to 18 years) with documented HIV-1 infection Subject is a male or female of non-childbearing potential (physiologically incapable of becoming pregnant, is pre-menarchal or post-menopausal) or child-bearing potential with a negative pregnancy test who agrees to avoid pregnancy by sexual abstinence or utilization of a highly effective method of birth control throughout the study period Subject is receiving a once-daily regimen of ATV (300mg) + RTV (100mg) + TDF/FTC (300mg/200mg) for at least 6 months prior to or by the first day of screening. ATV + RTV + TDF/FTC must be the subejct's INITIAL regimen or FIRST or SECOND SWITCH regimen. If ATV + RTV + TDF/FTC is subject's first or second switch regimen, then subject may ONLY have received the following prior regimens: a) any currently licensed non-nucleoside reverse transcriptase inhibitor (NNRTI) + TDF/FTC or ZDV/3TC; b) RTV-boosted PI with TDF/FTC or ZDV/3TC; or c) an alternative regimen not listed above after approval by Sponsor. Subject is virologically suppressed on ATV + RTV + TDF/FTC defined as HIV-1 RNA </=75 copies/mL at 2 consecutive timepoints, one of which is at Screening and the other at least 28 days prior to Screening Exclusion Criteria: Subject has evidence of virologic failure Subject has any known HIV genotyping results indicating HIV virus contains any of the following resistance mutations in reverse transcriptase including K65R, K70E, L74V, M184I/V or Y115F, a combination of two or more thymidine analog mutations including M41L, D67N, K70R, K219Q or E that include changes at either L210 or T215), or 3 or more of the following HIV-1 protease mutations associated with atazanavir resistance: D30, V32, M36, M46, I47, G48, I50, I54, A71, G73, V77, V82, I84, N88, and L90 Subject is HLA-B*5701 positive Subject has hypersensitivity to any component of the study drugs SUbject is pregnant or breastfeeding Subject is enrolled in one or more investigational drug protocols within 30 days of screening Subject has an active Center for Disease Control and Prevention (CDC) Category C disease, except cutaneous Kaposi's sarcoma not requiring systemic therapy during the trial Subject has ongoing clinically relevant hepatitis at screening and/or positive for Hepatitis B (+ HbsAg) Subject has a creatinine clearance <50 mL/min via the Cockcroft-Gault method Subject has a verified Grade 4 laboratory abnormality at screening unless the Investigator can provide a compelling explanation (e.g. elevated CPK due to exercise) for the laboratory result(s) and has the assent of the Sponsor Subject has any other laboratory abnormality or medical condition at screening, which, in the opinion of the investigator, would preclude the subject's participation in the study Subject has had an immunization within 30 days prior to first dose of investigational product Subject has had any exposure to treatment with immunomodulating agents (such as systemic corticosteroids, interleukins, or interferons) or receipt of an HIV-1 immunotherapeutic vaccine within 90 days prior to screening. Subjects using inhaled corticosteroids or short-course systemic corticosteroids (less than or equal to 14 days) are eligible for enrollment. Subject has had treatment with radiation therapy or cytotoxic chemotherapeutic agents within 90 days prior to screening, or has an anticipated need for these agents within the study period Subject has had treatment within 30 days prior to first dose of investigational product for or an anticipated need during the study of any medications which can have interactions with the study medications, TDF, FTC, ABC, 3TC, ATV and/or RTV, as described in current product labelling Subject has had treatment with any previous abacavir-containing regimen
Overall Study Officials:
First Name & Middle Initial & Last Name & Degree
GSK Clinical Trials
Organizational Affiliation
ViiV Healthcare
Official's Role
Study Director
Facility Information:
Facility Name
GSK Investigational Site
City
Hobson City
State/Province
Alabama
ZIP/Postal Code
36201
Country
United States
Facility Name
GSK Investigational Site
City
Phoenix
State/Province
Arizona
ZIP/Postal Code
85012
Country
United States
Facility Name
GSK Investigational Site
City
Phoenix
State/Province
Arizona
ZIP/Postal Code
85015
Country
United States
Facility Name
GSK Investigational Site
City
Bakersfield
State/Province
California
ZIP/Postal Code
93301
Country
United States
Facility Name
GSK Investigational Site
City
Beverly Hills
State/Province
California
ZIP/Postal Code
90211
Country
United States
Facility Name
GSK Investigational Site
City
Fountain Valley
State/Province
California
ZIP/Postal Code
92708
Country
United States
Facility Name
GSK Investigational Site
City
Long Beach
State/Province
California
ZIP/Postal Code
90813
Country
United States
Facility Name
GSK Investigational Site
City
Los Angeles
State/Province
California
ZIP/Postal Code
90069
Country
United States
Facility Name
GSK Investigational Site
City
Newport Beach
State/Province
California
ZIP/Postal Code
92663
Country
United States
Facility Name
GSK Investigational Site
City
Oakland
State/Province
California
ZIP/Postal Code
94602
Country
United States
Facility Name
GSK Investigational Site
City
San Diego
State/Province
California
ZIP/Postal Code
92103
Country
United States
Facility Name
GSK Investigational Site
City
San Francisco
State/Province
California
ZIP/Postal Code
94109
Country
United States
Facility Name
GSK Investigational Site
City
Denver
State/Province
Colorado
ZIP/Postal Code
80220
Country
United States
Facility Name
GSK Investigational Site
City
Washington
State/Province
District of Columbia
ZIP/Postal Code
20007
Country
United States
Facility Name
GSK Investigational Site
City
Washington
State/Province
District of Columbia
ZIP/Postal Code
20009
Country
United States
Facility Name
GSK Investigational Site
City
Washington
State/Province
District of Columbia
ZIP/Postal Code
20037
Country
United States
Facility Name
GSK Investigational Site
City
Daytona Beach
State/Province
Florida
ZIP/Postal Code
32117
Country
United States
Facility Name
GSK Investigational Site
City
Fort Lauderdale
State/Province
Florida
ZIP/Postal Code
33308
Country
United States
Facility Name
GSK Investigational Site
City
Fort Pierce
State/Province
Florida
ZIP/Postal Code
34982
Country
United States
Facility Name
GSK Investigational Site
City
Miami Beach
State/Province
Florida
ZIP/Postal Code
33139
Country
United States
Facility Name
GSK Investigational Site
City
Miami
State/Province
Florida
ZIP/Postal Code
33133
Country
United States
Facility Name
GSK Investigational Site
City
Miami
State/Province
Florida
ZIP/Postal Code
33137
Country
United States
Facility Name
GSK Investigational Site
City
Orlando
State/Province
Florida
ZIP/Postal Code
32803
Country
United States
Facility Name
GSK Investigational Site
City
West Palm Beach
State/Province
Florida
ZIP/Postal Code
33401
Country
United States
Facility Name
GSK Investigational Site
City
Wilton Manor
State/Province
Florida
ZIP/Postal Code
33305
Country
United States
Facility Name
GSK Investigational Site
City
Atlanta
State/Province
Georgia
ZIP/Postal Code
30309
Country
United States
Facility Name
GSK Investigational Site
City
Atlanta
State/Province
Georgia
ZIP/Postal Code
30339
Country
United States
Facility Name
GSK Investigational Site
City
Savannah
State/Province
Georgia
ZIP/Postal Code
31401
Country
United States
Facility Name
GSK Investigational Site
City
Boise
State/Province
Idaho
ZIP/Postal Code
83704
Country
United States
Facility Name
GSK Investigational Site
City
Chicago
State/Province
Illinois
ZIP/Postal Code
60613
Country
United States
Facility Name
GSK Investigational Site
City
Berkeley
State/Province
Michigan
ZIP/Postal Code
48072
Country
United States
Facility Name
GSK Investigational Site
City
East Lansing
State/Province
Michigan
ZIP/Postal Code
48824
Country
United States
Facility Name
GSK Investigational Site
City
Minneapolis
State/Province
Minnesota
ZIP/Postal Code
55415
Country
United States
Facility Name
GSK Investigational Site
City
Kansas City
State/Province
Missouri
ZIP/Postal Code
64106
Country
United States
Facility Name
GSK Investigational Site
City
Hillsborough
State/Province
New Jersey
ZIP/Postal Code
08844
Country
United States
Facility Name
GSK Investigational Site
City
Newark
State/Province
New Jersey
ZIP/Postal Code
07102
Country
United States
Facility Name
GSK Investigational Site
City
Valhalla
State/Province
New York
ZIP/Postal Code
10595
Country
United States
Facility Name
GSK Investigational Site
City
Chapel Hill
State/Province
North Carolina
ZIP/Postal Code
27599
Country
United States
Facility Name
GSK Investigational Site
City
Charlotte
State/Province
North Carolina
ZIP/Postal Code
28209
Country
United States
Facility Name
GSK Investigational Site
City
Memphis
State/Province
Tennessee
ZIP/Postal Code
38103
Country
United States
Facility Name
GSK Investigational Site
City
Dallas
State/Province
Texas
ZIP/Postal Code
75246
Country
United States
Facility Name
GSK Investigational Site
City
Houston
State/Province
Texas
ZIP/Postal Code
77098
Country
United States
Facility Name
GSK Investigational Site
City
Lynchburg
State/Province
Virginia
ZIP/Postal Code
24501
Country
United States
Facility Name
GSK Investigational Site
City
Spokane
State/Province
Washington
ZIP/Postal Code
99204
Country
United States
Facility Name
GSK Investigational Site
City
Ponce
ZIP/Postal Code
00717
Country
Puerto Rico
Facility Name
GSK Investigational Site
City
San Juan
ZIP/Postal Code
00909
Country
Puerto Rico

12. IPD Sharing Statement

Citations:
Citation
Robertson K, Maruff P, Wohl D, et al. Similar cognition outcomes after 24 weeks for tenofovir/FTC + atazanavir/r (ATV/r)-experienced HIV+ subjects or subjects simplifying to abacavir/3TC+ATV. Published at: Conference on Retroviruses and Opportunistic Infections - 20th Annual; March 3-6, 2013; Atlanta, GA.
Results Reference
background
Citation
D. Wohl, L. Bhatti, P. Maruff, K. Robertson, C. Small, H. Edelstein, H. Zhao, D. Margolis, L. Ross, M. Shaefer, on behalf of the ASSURE (EPZ113734) Study Team. Prevalence of HIV Associated Neurocognitive Disorders (HAND) in Virologically Suppressed HIV+ Individuals. 19th International AIDS Conference; July 22-27, 2012; Washington, DC. Poster WEPE092.
Results Reference
result
Citation
C. B. Small, D. Wohl, D. A. Margolis, B. Wine, L. L. Ross, H. Zhao, and M. S. Shaefer. Prevalence of HLA-B*5701 Allele in HIV-infected Subjects in North America and Reductions in Risk for Development of Abacavir Associated Hypersensitivity Reaction (ABC HSR). 52nd Interscience Conference on Antimicrobial Agents and Chemotherapy; September 9-12, 2012; San Francisco, CA. Poster H-895
Results Reference
result
Citation
D. Wohl, L. Bhatti, C. B. Small, H. Edelstein, H. Zhao, D. A. Margolis, L. L. Ross, M.S. Shaefer. Simplification to Abacavir/Lamivudine (ABC/3TC) + Atazanavir (ATV) from Tenofovir/Emtricitabine (TDF/FTC) + ATV/Ritonavir (RTV, /r) Maintains Viral Suppression and Improves Bone Biomarkers. 52nd Interscience Conference on Antimicrobial Agents and Chemotherapy; September 9-12, 2012; San Francisco, CA. Oral presentation H-556c.
Results Reference
result
PubMed Identifier
28399804
Citation
Small CB, Margolis DA, Shaefer MS, Ross LL. HLA-B*57:01 allele prevalence in HIV-infected North American subjects and the impact of allele testing on the incidence of abacavir-associated hypersensitivity reaction in HLA-B*57:01-negative subjects. BMC Infect Dis. 2017 Apr 11;17(1):256. doi: 10.1186/s12879-017-2331-y.
Results Reference
derived
PubMed Identifier
24825167
Citation
Wohl DA, Bhatti L, Small CB, Edelstein H, Zhao HH, Margolis DA, DeJesus E, Weinberg WG, Ross LL, Shaefer MS. Simplification to abacavir/lamivudine + atazanavir maintains viral suppression and improves bone and renal biomarkers in ASSURE, a randomized, open label, non-inferiority trial. PLoS One. 2014 May 13;9(5):e96187. doi: 10.1371/journal.pone.0096187. eCollection 2014. Erratum In: PLoS One. 2014;9(7):e103925. Dosage error in article text.
Results Reference
derived
Links:
URL
http://www.viivhealthcare.com
Description
ViiV Healthcare Website
URL
http://www.epzicom.com
Description
Click here for more information about Epzicom

Learn more about this trial

A Simplification Study of Unboosted Reyataz With Epzicom (ASSURE)

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