Dose Ranging Study of GSK1265744 Plus Nucleoside Reverse Transcriptase Inhibitors for Induction of Human Immunodeficiency Virus-1 (HIV-1) Virologic Suppression Followed by Virologic Suppression Maintenance by GSK1265744 Plus Rilpivirine

Phase 2

Completed

Conditions: Infection, Human Immunodeficiency Virus
HIV Infections

Interventions: Drug: Efavirenz 600 mg
Drug: GSK1265744 10 mg
Drug: GSK1265744 30 mg
Drug: GSK1265744 60 mg
Drug: Rilpivirine 25 mg
Drug: Placebo
Drug: Abacavir/Lamivudine (ABC/3TC) or Tenofovir/Emtricitabine (TDF/FTC)

Registration Number: NCT01641809

Lead Sponsor: ViiV Healthcare

Brief Summary: The study is designed to select a dose of GSK1265744 primarily on the basis of antiviral activity and tolerability in HIV-1 infected, antiretroviral naive subjects.

This study consists of two parts:

Induction Phase: Approximately 200 subjects will be randomized (50 subjects in each of the 4 treatment arms). The Induction Phase consists of a 24 week dose-ranging evaluation of GSK1265744 at blinded doses of 10 mg, 30 mg and 60 mg once-daily and a control arm of open-label efavirenz (EFV) 600 mg once daily. The background dual nucleoside reverse transcriptase inhibitor (NRTI) antiretroviral therapy (ART) for all arms will be either abacavir/lamivudine (ABC/3TC) or tenofovir/emtricitabine (TDF/FTC) as selected by the Investigator. Subjects randomized to a GSK1265744 containing arm, who successfully complete 24 weeks on study and demonstrate virologic suppression (defined as having a plasma HIV-1 ribonucleic acid \[RNA\] \<50 copies per milliliter \[c/mL\] before Week 24, with no signs of virologic rebound) will become eligible for the Maintenance Phase of this study.

Maintenance Phase: The background NRTIs will be discontinued and the subjects will continue their randomized dose of GSK1265744 in combination with rilpivirine (RPV) 25 mg once-daily for an additional 72 weeks. The Maintenance phase will evaluate the ability of this two drug ART regimen to maintain virologic suppression through Week 48, Week 72 and Week 96. Subjects randomized to the EFV arm will continue on their randomized regimen through Week 96.

After completion of the maintenance phase, subjects could enroll in the Open-Label Phase to continue GSK1265744 + RPV treatment as long as they continue to derive clinical benefit and until it is locally approved and commercially available.

Detailed Description: Not available

Recruitment & Eligibility

Status: COMPLETED

Sex: All

Target Recruitment: 244

Inclusion Criteria

HIV-1 infected male or female subjects >= 18 years of age
Screening plasma HIV-1 RNA >=1000 c/mL
CD4+ cell count >=200 cells/millimeter (mm)^3
ART-naive defined as having =<10 days of prior therapy with any antiretroviral agent following a diagnosis of HIV-1 infection
Female subjects of child bearing potential are eligible to enter if they are not pregnant and willing to use protocol-specified methods of contraception to prevent pregnancy during the study

Exclusion Criteria

Any evidence at screening of an active Centers for Disease and Prevention Control (CDC) Category C disease
Treatment with an HIV-1 immunotherapeutic vaccine within 90 days of Screening
History of ongoing or clinically relevant hepatitis within the previous 6 months, and subjects with moderate to severe hepatic impairment will be excluded
Women who are breastfeeding
Subject, who in the investigator's judgment, poses a significant suicide risk
Any clinically significant finding on screening or baseline electrocardiograph (ECG)
The presence of any specific laboratory abnormalities at Screening
History of cardiac disease
Clinically relevant pancreatitis
Subjects who are unlikely to complete the dosing schedule due to a pre-existing physical or mental condition
Any condition which impairs the absorption, distribution, metabolism or excretion of the investigational product
Any evidence of primary resistance based upon the presence of a major resistance associated mutation in the Screening HIV genotype, or any historical genotype
Treatment with any protocol-specified excluded medication

Study & Design

Study Type: INTERVENTIONAL

Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Arm 1 GSK1265744 10 mg	Rilpivirine 25 mg	In the Induction Phase subjects will receive oral tablets of GSK1265744 10 mg + matching placebo + investigator-selected background NRTIs (either abacavir/lamivudine or tenofovir/emtricitabine) once daily from Day 1 to Week 24. Subjects continuing in the Maintenance Phase will receive oral tablets of GSK1265744 10 mg + matching placebo + Rilpivirine 25 mg once daily from Week 24 to Week 96.
Arm 4 Efavirenz 600 mg	Efavirenz 600 mg	In the Induction Phase and Maintenance Phase subjects will receive oral tablets of Efavirenz 600 mg + investigator-selected background NRTIs (either abacavir/lamivudine or tenofovir/emtricitabine).
Arm 1 GSK1265744 10 mg	GSK1265744 10 mg	In the Induction Phase subjects will receive oral tablets of GSK1265744 10 mg + matching placebo + investigator-selected background NRTIs (either abacavir/lamivudine or tenofovir/emtricitabine) once daily from Day 1 to Week 24. Subjects continuing in the Maintenance Phase will receive oral tablets of GSK1265744 10 mg + matching placebo + Rilpivirine 25 mg once daily from Week 24 to Week 96.
Arm 1 GSK1265744 10 mg	Abacavir/Lamivudine (ABC/3TC) or Tenofovir/Emtricitabine (TDF/FTC)	In the Induction Phase subjects will receive oral tablets of GSK1265744 10 mg + matching placebo + investigator-selected background NRTIs (either abacavir/lamivudine or tenofovir/emtricitabine) once daily from Day 1 to Week 24. Subjects continuing in the Maintenance Phase will receive oral tablets of GSK1265744 10 mg + matching placebo + Rilpivirine 25 mg once daily from Week 24 to Week 96.
Arm 2 GSK1265744 30 mg	GSK1265744 30 mg	In the Induction Phase subjects will receive oral tablets of GSK1265744 30 mg + matching placebo + investigator-selected background NRTIs (either abacavir/lamivudine or tenofovir/emtricitabine) once daily from Day 1 to Week 24. Subjects continuing in the Maintenance Phase will receive oral tablets of GSK1265744 30 mg + matching placebo + Rilpivirine 25 mg once daily from Week 24 to Week 96.
Arm 2 GSK1265744 30 mg	Placebo	In the Induction Phase subjects will receive oral tablets of GSK1265744 30 mg + matching placebo + investigator-selected background NRTIs (either abacavir/lamivudine or tenofovir/emtricitabine) once daily from Day 1 to Week 24. Subjects continuing in the Maintenance Phase will receive oral tablets of GSK1265744 30 mg + matching placebo + Rilpivirine 25 mg once daily from Week 24 to Week 96.
Arm 1 GSK1265744 10 mg	Placebo	In the Induction Phase subjects will receive oral tablets of GSK1265744 10 mg + matching placebo + investigator-selected background NRTIs (either abacavir/lamivudine or tenofovir/emtricitabine) once daily from Day 1 to Week 24. Subjects continuing in the Maintenance Phase will receive oral tablets of GSK1265744 10 mg + matching placebo + Rilpivirine 25 mg once daily from Week 24 to Week 96.
Arm 2 GSK1265744 30 mg	Rilpivirine 25 mg	In the Induction Phase subjects will receive oral tablets of GSK1265744 30 mg + matching placebo + investigator-selected background NRTIs (either abacavir/lamivudine or tenofovir/emtricitabine) once daily from Day 1 to Week 24. Subjects continuing in the Maintenance Phase will receive oral tablets of GSK1265744 30 mg + matching placebo + Rilpivirine 25 mg once daily from Week 24 to Week 96.
Arm 3 GSK1265744 60 mg	GSK1265744 60 mg	In the Induction Phase subjects will receive oral tablets of GSK1265744 60 mg + investigator-selected background NRTIs (either abacavir/lamivudine or tenofovir/emtricitabine) once daily from Day 1 to Week 24. Subjects continuing in the Maintenance Phase will receive oral tablets of GSK1265744 60 mg + Rilpivirine 25 mg once daily from Week 24 to Week 96.
Arm 3 GSK1265744 60 mg	Rilpivirine 25 mg	In the Induction Phase subjects will receive oral tablets of GSK1265744 60 mg + investigator-selected background NRTIs (either abacavir/lamivudine or tenofovir/emtricitabine) once daily from Day 1 to Week 24. Subjects continuing in the Maintenance Phase will receive oral tablets of GSK1265744 60 mg + Rilpivirine 25 mg once daily from Week 24 to Week 96.
Arm 4 Efavirenz 600 mg	Abacavir/Lamivudine (ABC/3TC) or Tenofovir/Emtricitabine (TDF/FTC)	In the Induction Phase and Maintenance Phase subjects will receive oral tablets of Efavirenz 600 mg + investigator-selected background NRTIs (either abacavir/lamivudine or tenofovir/emtricitabine).
Arm 2 GSK1265744 30 mg	Abacavir/Lamivudine (ABC/3TC) or Tenofovir/Emtricitabine (TDF/FTC)	In the Induction Phase subjects will receive oral tablets of GSK1265744 30 mg + matching placebo + investigator-selected background NRTIs (either abacavir/lamivudine or tenofovir/emtricitabine) once daily from Day 1 to Week 24. Subjects continuing in the Maintenance Phase will receive oral tablets of GSK1265744 30 mg + matching placebo + Rilpivirine 25 mg once daily from Week 24 to Week 96.
Arm 3 GSK1265744 60 mg	Abacavir/Lamivudine (ABC/3TC) or Tenofovir/Emtricitabine (TDF/FTC)	In the Induction Phase subjects will receive oral tablets of GSK1265744 60 mg + investigator-selected background NRTIs (either abacavir/lamivudine or tenofovir/emtricitabine) once daily from Day 1 to Week 24. Subjects continuing in the Maintenance Phase will receive oral tablets of GSK1265744 60 mg + Rilpivirine 25 mg once daily from Week 24 to Week 96.

Primary Outcome Measures

Name	Time	Method
Percentage of Participants With HIV-1 Ribonucleic Acid (RNA) <50 Copies/Milliliter (mL) at Week 48 Using the Missing, Switch, Discontinuation Equals Failure (MSDF) Algorithm	Week 48	Plasma samples were collected for quantitative analysis of HIV-1 RNA. Percentage of participants with HIV-1 RNA \<50 copies/mL at Week 48 was determined using the MSDF algorithm based on the current US Food and Drug Administration (FDA) definition of Snapshot algorithm. This algorithm treats all participants without HIV-1 RNA data at the visit of interest (due to missing data or discontinuation of investigational product prior to visit window) as well as participants who switch their concomitant antiretroviral therapy prior to the visit of interest as non-responders. Virological response within an analysis window was determined by the last available HIV-1 RNA measurement in that window while the participant was on-treatment. MSDF response rate was calculated as number of responders in the analysis window divided by the number of participants in the analysis population. ITT-E Population comprised of all randomized participants who received at least one dose of investigational product.

Secondary Outcome Measures

Name	Time	Method
Percentage of Participants With Plasma HIV-1 RNA <400 Copies/mL Until Week 96 Using the Observed Case Analysis	Baseline (Day 1), Weeks 2, 4, 8, 12, 16, 20, 24, 26, 28, 32, 36, 40, 48, 60, 72, 84 and 96	Plasma samples were collected for quantitative analysis of HIV-1 RNA. Percentage of participants with HIV-1 RNA \<400 copies/mL over time was determined using the observed case analysis, which did not impute for any missing assessments. Observed case response rate was calculated as the number of participants with a positive response at the time point where the participant is on randomized therapy divided by the number of participants in the analysis population with an assessment in the scheduled visit window during the randomized period.
Change From Baseline in CD4+ Cell Count Over Time by Visit	Baseline (Day 1) and Weeks 2, 4, 8, 12, 16, 20, 24, 26, 28, 32, 36, 40, 48, 60, 72, 84, 96, 108, 120, 132, 144, 156, 168, 180, 192, 204, 216, 228, 240, 252, 264, 276, 288, 300, 312 and 324	CD4+ cell counts were assessed by flow cytometry. Baseline value is the last pre-treatment value observed. Change from Baseline is calculated as value at indicated time point minus Baseline value.
Percentage of Participants With Plasma HIV-1 RNA <400 Copies/mL Until Week 96 Using the MSDF Algorithm	Baseline (Day 1), Weeks 2, 4, 8, 12, 16, 24, 26, 28, 32, 36, 40, 48, 60, 72, 84 and 96	Plasma samples were collected for quantitative analysis of HIV-1 RNA. The percentage of participants with HIV-1 RNA \<400 copies/mL over time was determined using the MSDF algorithm based on the current US FDA definition of the Snapshot algorithm. This algorithm treats all participants without HIV-1 RNA data at the visit of interest (due to missing data or discontinuation of investigational product prior to visit window) as well as participants who switch their concomitant antiretroviral therapy prior to the visit of interest as non-responders. Virological response within an analysis window was determined by the last available HIV-1 RNA measurement in that window while the participant was on-treatment. MSDF response rate was calculated as number of responders in the analysis window divided by the number of participants in the analysis population.
Absolute Values for Plasma Logarithm to the Base 10 (log10) HIV-1 RNA Over Time by Visit	Baseline (Day 1), Weeks 2, 4, 8, 12, 16, 20, 24, 26, 28, 32, 36, 40, 48, 60, 72, 84, 96, 108, 120, 132, 144, 156, 168, 180, 192, 204, 216, 228, 240, 252, 264, 276, 288, 300, 312 and 324	Plasma samples for quantitative analysis of HIV-1 RNA were collected at indicated time points. Baseline value is the last pre-treatment value observed.
Absolute Values for Cluster of Differentiation 4+ (CD4+) Cell Count During Double-blind Randomized Treatment Until Week 96	Baseline (Day 1), Weeks 2, 4, 8, 12, 16, 20, 24, 26, 28, 32, 36, 40, 48, 60, 72, 84 and 96	CD4+ cell counts were assessed by flow cytometry. Baseline value is the last pre-treatment value observed.
Number of Participants With Treatment Emergent Phenotypic Resistance	Up to Week 324	Plasma samples were collected for drug resistance testing. Phenotypic resistance data for the following drugs under integrase inhibitor (INI), non-nucleoside reverse transcriptase inhibitor (NNRTI), NRTI and proteasome inhibitor drug classes is presented for participants with confirmed virologic failure: GSK1265744, Raltegravir \[RAL\], Delavirdine \[DLV\], Efavirenz \[EFV\], Etravirine \[ETR\], Nevirapine (NVP), RPV, 3TC, ABC, FTC, TDF, Zidovudine \[ZDV\], Stavudine \[d4T\], Didanosine \[ddI\], Atazanavir/ritonavir \[ATV/r\], Darunavir (DRV)/r, Fosamprenavir/r \[FPV/r\], Indinavir/r \[IDV/r\], Lopinavir/r \[LPV/r\], Nelfinavir \[NFV\], Ritonavir \[RTV\], Saquinavir/r \[SQV/r\], Tipranavir/r \[TPV/r\]. On-treatment Phenotypic Resistance population comprised of all participants in the ITT-E Population with available on-treatment phenotypic resistance data, excluding participants who are not protocol-defined virologic failures.
Number of Participants With Adherence to Study Treatment	Baseline (Day 1), Weeks 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 48, 60, 72, 84, 96, 108, 120, 132, 144, 156, 168, 180, 192, 204, 216, 228, 240, 252, 264, 276, 288, 300 and 312	Number of participants with \>=90% adherence to study treatment based on pill count is summarized.
Percentage of Participants With Plasma HIV-1 RNA <50 Copies/mL Over Time by Visit Using the MSDF Algorithm	Baseline (Day 1), Weeks 2, 4, 8, 12, 16, 24, 26, 28, 32, 36, 40, 48, 60, 72, 84, 96, 108, 120, 132, 144, 156, 168, 180, 192, 204, 216, 228, 240, 252, 264, 276, 288, 300 and 312	Plasma samples were collected for quantitative analysis of HIV-1 RNA. Percentage of participants with HIV-1 RNA \<50 copies/mL over time was determined using the MSDF algorithm based on the current US FDA definition of the Snapshot algorithm. This algorithm treats all participants without HIV-1 RNA data at the visit of interest (due to missing data or discontinuation of investigational product prior to visit window) as well as participants who switch their concomitant antiretroviral therapy prior to the visit of interest as non-responders. Virological response within an analysis window was determined by the last available HIV-1 RNA measurement in that window while the participant was on-treatment. MSDF response rate was calculated as number of responders in the analysis window divided by the number of participants in the analysis population.
Percentage of Participants With Plasma HIV-1 RNA <50 Copies/mL Over Time by Visit Using Observed Case Analysis	Baseline (Day 1), Weeks 2, 4, 8, 12, 16, 20, 24, 26, 28, 32, 36, 40, 48, 60, 72, 84, 96, 108, 120, 132, 144, 156, 168, 180, 192, 204, 216, 228, 240, 252, 264, 276, 288, 300, 312 and 324	Plasma samples were collected for quantitative analysis of HIV-1 RNA. Percentage of participants with HIV-1 RNA \<50 copies/mL over time was determined using the observed case analysis, which did not impute for any missing assessments. Observed case response rate was calculated as the number of participants with a positive response at the time point where the participant is on therapy divided by the number of participants in the analysis population with an assessment in the scheduled visit window during the randomized period or open-label phase.
Change From Baseline in Plasma log10 HIV-1 RNA Over Time by Visit	Baseline (Day 1) and Weeks 2, 4, 8, 12, 16, 20, 24, 26, 28, 32, 36, 40, 48, 60, 72, 84, 96, 108, 120, 132, 144, 156, 168, 180, 192, 204, 216, 228, 240, 252, 264, 276, 288, 300, 312 and 324	Plasma samples for quantitative analysis of HIV-1 RNA were collected at indicated time points. Baseline value is the last pre-treatment value observed. Change from Baseline is calculated as value at indicated time point minus Baseline value.
Absolute Values for ALT, AST, CK During Double-blind Randomized Treatment Until Week 96	Baseline (Day 1) and Weeks 2, 4, 8, 12, 16, 20, 24, 26, 28, 32, 36, 40, 48, 60, 72, 84 and 96	Blood samples were collected for the analysis of ALT, AST and CK. Baseline value is the last pre-treatment value observed.
Absolute Values for Hemoglobin During Double-blind Randomized Treatment Until Week 96	Baseline (Day 1), Weeks 2, 4, 8, 12, 16, 20, 24, 26, 28, 32, 36, 40, 48, 60, 72, 84 and 96	Blood samples were collected for the analysis of hemoglobin level. Baseline value is the last pre-treatment value observed.
Change From Baseline in ALT, AST and CK Over Time by Visit	Baseline (Day 1) and Weeks 2, 4, 8, 12, 16, 20, 24, 26, 28, 32, 36, 40, 48, 60, 72, 84, 96, 108, 120, 132, 144, 156, 168, 180, 192, 204, 216, 228, 240, 252, 264, 276, 288, 300, 312 and 324	Blood samples were collected for the analysis of ALT, AST and CK. Baseline value is the last pre-treatment value observed. Change from Baseline is calculated as value at indicated time point minus Baseline value.
Change From Baseline in Total Neutrophils, Platelet Count and WBC Count Over Time by Visit	Baseline (Day 1) and Weeks 2, 4, 8, 12, 16, 20, 24, 26, 28, 32, 36, 40, 48, 60, 72, 84, 96, 108, 120, 132, 144, 156, 168, 180, 192, 204, 216, 228, 240, 252, 264, 276, 288, 300, 312 and 324	Blood samples were collected for the analysis of total neutrophils, platelet count and WBC count. Baseline value is the last pre-treatment value observed. Change from Baseline is calculated as value at indicated time point minus Baseline value.
Number of Participants With Maximum Treatment-emergent Clinical Chemistry Toxicity-Induction Phase	Up to Week 24	Blood samples were collected for the analysis of following clinical chemistry parameters: ALT, albumin, ALP, AST, CO2/bicarbonate, chloride, cholesterol, CK, creatinine, glucose, high density lipoprotein (HDL) cholesterol, LDL cholesterol, lipase, inorganic phosphorus, potassium, sodium, total bilirubin, triglycerides and urea/blood urea nitrogen (BUN). A toxicity was considered treatment emergent if it developed or increased in intensity from Baseline while on-treatment. Laboratory toxicities were graded using the DAIDS Table for Grading the Severity of Adult and Pediatric Adverse Events, where Grade 1=Mild, Grade 2=moderate, Grade 3=severe and Grade 4=potentially life-threatening.
Number of Participants With Post-Baseline HIV-1 Associated Conditions Progression of Disease	Up to Week 324	HIV-1 associated conditions were assessed according to the 1993 Centers for Disease Control and Prevention (CDC) Revised Classification System for HIV Infection in Adults. The clinical categories of HIV infection as per CDC system are class A=Asymptomatic HIV infection or lymphadenopathy or acute HIV infection; class B=symptomatic non-acquired immunodeficiency syndrome (AIDS) conditions and class C=AIDS indicator conditions. Number of participants experiencing disease progression is presented, where disease progression is defined as the progression from Baseline HIV disease status as follows: CDC class A at Baseline to CDC class C event; CDC Class B at Baseline to CDC Class C event; CDC Class C at Baseline to new CDC Class C event; and CDC class A, B or C at Baseline to death.
Number of Participants With Maximum Treatment-emergent Hematology Toxicities-Maintenance Phase	Week 24 to Week 96	Blood samples were collected for the analysis of following hematology parameters: Activated Partial Thromboplastin Time (APTT), hemoglobin, international normalized ratio (INR), platelet count, prothrombin time (PT), total neutrophils and white blood cell (WBC) count. A toxicity is considered treatment emergent if it developed or increased in intensity from Baseline while on-treatment. Laboratory toxicities were graded using the DAIDS Table for Grading the Severity of Adult and Pediatric Adverse Events, where Grade 1=Mild, Grade 2=moderate, Grade 3=severe and Grade 4=potentially life-threatening.
Change From Baseline in Estimated Creatinine Clearance Over Time by Visit	Baseline (Day 1) and Weeks 2, 4, 8, 16, 20, 24, 26, 40, 48, 60, 96, 180, 204, 252 and 264	Blood samples were collected for the analysis of estimated creatinine clearance. Estimated creatinine clearance was calculated using Cockcroft-Gault formula. Baseline value is the last pre-treatment value observed. Change from Baseline is calculated as value at indicated time point minus Baseline value.
Number of Participants With AEs and SAEs-Induction Phase	Up to Week 24	An AE is defined as any untoward medical occurrence in a clinical investigation participant, temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product. An SAE is any untoward medical occurrence that, at any dose: results in death; is life-threatening; requires hospitalization or prolongation of existing hospitalization; results in disability/incapacity; is a congenital anomaly/birth defect; other medical events that may jeopardize the participant or may require medical or surgical intervention to prevent one of the outcomes mentioned before; all events of possible drug-induced liver injury with hyperbilirubinemia.
Number of Participants With Treatment Emergent Genotypic Mutations Associated With Development of Resistance	Up to Week 324	Plasma samples were collected for drug resistance testing. The treatment emergent INI mutations associated with development of resistance to RAL, ELV, dolutegravir (DTG) or GSK1265744 and major resistance mutations to other classes (NRTI, NNRTI, PI) as defined by International AIDS society (IAS)-United States of America (USA) are presented. On-treatment Genotypic Resistance population comprised of all participants in the ITT-E Population with available on-treatment genotypic resistance data, excluding participants who are not protocol-defined virologic failures.
Percentage of Participants With HIV-1 RNA <50 Copies/mL From Week 24 Through Week 96 by Visit Using MSDF Algorithm-Maintenance Phase	Weeks 24, 26, 28, 32, 36, 40, 48, 60, 72, 84 and 96	Plasma samples were collected for quantitative analysis of HIV-1 RNA. The end point was determined using MSDF algorithm based on the current US FDA definition of Snapshot algorithm. This algorithm treats all participants without HIV-1 RNA data at the visit of interest (due to missing data or discontinuation of investigational product prior to visit window) as well as participants who switch their concomitant antiretroviral therapy prior to the visit of interest as non-responders. Virological response within an analysis window was determined by the last available HIV-1 RNA measurement in that window while the participant was on-treatment. MSDF response rate was calculated as number of responders in the analysis window divided by the number of participants in the analysis population. ITT-Maintenance Exposed (ME) Population comprised of all participants randomized to GSK1265744 and who received at least one dose of investigational product during maintenance phase of the study.
Number of Participants With Maximum Treatment-emergent Clinical Chemistry Toxicities-Maintenance Phase	Week 24 to Week 96	Blood samples were collected for the analysis of following clinical chemistry parameters: alanine aminotranferase (ALT), albumin, alkaline phosphatase (ALP), aspartate aminotransferase (AST), carbon dioxide(CO2)/bicarbonate, cholesterol, creatine kinase (CK), creatinine, glucose, low density lipoprotein (LDL) cholesterol, lipase, inorganic phosphorus, potassium, sodium, total bilirubin and triglycerides. A toxicity is considered treatment emergent if it developed or increased in intensity from Baseline while on-treatment. Laboratory toxicities were graded using the Division of AIDS (DAIDS) Table for Grading the Severity of Adult and Pediatric Adverse Events, where Grade 1=Mild, Grade 2=moderate, Grade 3=severe and Grade 4=potentially life-threatening.
Absolute Values for Platelet Count, Total Neutrophils and WBC Count During Double-blind Randomized Treatment Until Week 96	Baseline (Day 1), Weeks 2, 4, 8, 12, 16, 20, 24, 26, 28, 32, 36, 40, 48, 60, 72, 84 and 96	Blood samples were collected for the analysis of platelet count, total neutrophils (T. neutrophils) and WBC count. Baseline value is the last pre-treatment value observed.
Percentage of Participants Who Discontinued Investigational Product Due to Adverse Events	Up to Week 324	AE is defined as any untoward medical occurrence in a clinical investigation participant, temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product. The percentage of participants with adverse events leading to withdrawal/permanent discontinuation of investigational product is presented.
Percentage of Participants Who Discontinued Treatment Due to Adverse Events-Induction Phase	Up to Week 24	AE is defined as any untoward medical occurrence in a clinical investigation participant, temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product. The percentage of participants with adverse events leading to withdrawal/permanent discontinuation of investigational product is presented.
Percentage of Participants Who Discontinued Treatment Due to Adverse Events-Maintenance Phase	Week 24 to Week 96	AE is defined as any untoward medical occurrence in a clinical investigation participant, temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product. The percentage of participants with adverse events leading to withdrawal/permanent discontinuation of investigational product is presented.
Area Under the Concentration Time Curve Over the Dosing Interval (AUC[0-tau]) for GSK1265744 at Week 2	pre-dose, 1, 2, 3, 4, 8 and 24 hours post-dose at Week 2	Blood samples for pharmacokinetic (PK) analysis were collected at the indicated time points. The PK parameters were calculated by standard non-compartmental analysis. The PK Summary Population comprised of all participants who received GSK1265744 or with Rilpivirine, underwent intensive and/or limited/sparse PK sampling during the study, and provided evaluable GSK1265744 and Rilpivirine plasma concentration data
Maximum Observed Concentration (Cmax) for GSK1265744 at Week 2	pre-dose, 1, 2, 3, 4, 8 and 24 hours post-dose at Week 2	Blood samples for PK analysis were collected at the indicated time points. The PK parameters were calculated by standard non-compartmental analysis.
Percentage of Participants With HIV-1 RNA <50 Copies/mL at Week 16 and Week 24 Using MSDF Algorithm-Induction Phase	Week 16 and Week 24	Plasma samples were collected for quantitative analysis of HIV-1 RNA. Percentage of participants with HIV-1 RNA \<50 copies/mL over time was determined using the MSDF algorithm based on the current US FDA definition of the Snapshot algorithm. This algorithm treats all participants without HIV-1 RNA data at the visit of interest (due to missing data or discontinuation of investigational product prior to visit window) as well as participants who switch their concomitant antiretroviral therapy prior to the visit of interest as non-responders. Virological response within an analysis window was determined by the last available HIV-1 RNA measurement in that window while the participant was on-treatment. MSDF response rate was calculated as number of responders in the analysis window divided by the number of participants in the analysis population.
Number of Participants With AEs and SAEs Over Time	Up to Week 324	An AE is defined as any untoward medical occurrence in a clinical investigation participant, temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product. An SAE is any untoward medical occurrence that, at any dose: results in death; is life-threatening; requires hospitalization or prolongation of existing hospitalization; results in disability/incapacity; is a congenital anomaly/birth defect; other medical events that may jeopardize the participant or may require medical or surgical intervention to prevent one of the outcomes mentioned before; all events of possible drug-induced liver injury with hyperbilirubinemia. Safety Population comprised of all randomized participants who were exposed to investigational products with the exception of any participants with documented evidence of not having consumed any amount of investigational product.
Absolute Values for Creatinine and Total Bilirubin During Double-blind Randomized Treatment Until Week 96	Baseline (Day 1), Weeks 2, 4, 8, 12, 16, 20, 24, 26, 28, 32, 36, 40, 48, 60, 72, 84 and 96	Blood samples were collected for the analysis of creatinine and total bilirubin (T. bilirubin). Baseline value is the last pre-treatment value observed.
Absolute Values for Estimated Creatinine Clearance During Double-blind Randomized Treatment Until Week 96	Baseline (Day 1), Weeks 2, 4, 8, 16, 20, 24, 26, 40, 48, 60 and 96	Blood samples were collected for the analysis of estimated creatinine clearance. Estimated creatinine clearance was calculated using Cockcroft-Gault formula. Baseline value is the last pre-treatment value observed.
Change From Baseline in Creatinine and Total Bilirubin Over Time by Visit	Baseline (Day 1) and Weeks 2, 4, 8, 12, 16, 20, 24, 26, 28, 32, 36, 40, 48, 60, 72, 84, 96, 108, 120, 132, 144, 156, 168, 180, 192, 204, 216, 228, 240, 252, 264, 276, 288, 300, 312 and 324	Blood samples were collected for the analysis of creatinine and total bilirubin. Baseline value is the last pre-treatment value observed. Change from Baseline is calculated as value at indicated time point minus Baseline value.
Number of Participants With Clinically Significant Electrocardiogram (ECG) Findings	Up to Week 324	Twelve lead ECG was performed after the participants had rested in a semi-supine position for at least 5 minutes using an ECG machine that automatically calculated the heart rate and measured PR, QRS, QT, and corrected QT (QTc) intervals. Clinically significant abnormal findings are those which are not associated with the underlying disease, unless judged by the investigator to be more severe than expected for the participant's condition. Data for worst case results at any time on-treatment is presented.
Number of Participants With Adverse Events (AEs) and Serious Adverse Events (SAEs)-Maintenance Phase	Week 24 to Week 96	An AE is defined as any untoward medical occurrence in a clinical investigation participant, temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product. An SAE is any untoward medical occurrence that, at any dose: results in death; is life-threatening; requires hospitalization or prolongation of existing hospitalization; results in disability/incapacity; is a congenital anomaly/birth defect; other medical events that may jeopardize the participant or may require medical or surgical intervention to prevent one of the outcomes mentioned before; all events of possible drug-induced liver injury with hyperbilirubinemia. Maintenance Safety Population comprised of all participants randomized to GSK1265744 and who were exposed to investigational products during the maintenance phase of the study with the exception of any participants with documented evidence of not having consumed any amount of investigational product.
Number of Participants With Maximum Treatment-emergent Clinical Chemistry Toxicities Over Time	Up to Week 324	Blood samples were collected for the analysis of following clinical chemistry parameters: ALT, albumin, ALP, AST, CO2/bicarbonate, cholesterol, CK, creatinine, glucose, LDL cholesterol, lipase, inorganic phosphorus, potassium, sodium, total bilirubin and triglycerides. Laboratory toxicities were graded using the DAIDS Table for Grading the Severity of Adult and Pediatric Adverse Events, where Grade 1=Mild, Grade 2=moderate, Grade 3=severe and Grade 4=potentially life-threatening.
Number of Participants With Maximum Treatment-emergent Hematology Toxicities Over Time	Up to Week 324	Blood samples were collected for the analysis of following hematology parameters: APTT, hemoglobin, INR, platelet count, PT, total neutrophils and WBC count. Laboratory toxicities were graded using the DAIDS Table for Grading the Severity of Adult and Pediatric Adverse Events, where Grade 1=Mild, Grade 2=moderate, Grade 3=severe and Grade 4=potentially life-threatening.
Change From Baseline in Hemoglobin Level Over Time by Visit	Baseline (Day 1) and Weeks 2, 4, 8, 12, 16, 20, 24, 26, 28, 32, 36, 40, 48, 60, 72, 84, 96, 108, 120, 132, 144, 156, 168, 180, 192, 204, 216, 228, 240, 252, 264, 276, 288, 300, 312 and 324	Blood samples were collected for the analysis of hemoglobin level. Baseline value is the last pre-treatment value observed. Change from Baseline is calculated as value at indicated time point minus Baseline value.
Number of Participants With Maximum Treatment-emergent Hematology Toxicities-Induction Phase	Up to Week 24	Blood samples were collected for the analysis of following hematology parameters: APTT, basophils, eosinophils, hematocrit, hemoglobin, INR, lymphocytes, mean corpuscle volume (MCV), monocytes, platelet count, PT, red blood cell (RBC) count, total neutrophils and WBC count. A toxicity was considered treatment emergent if it developed or increased in intensity from Baseline while on-treatment. Laboratory toxicities were graded using the DAIDS Table for Grading the Severity of Adult and Pediatric Adverse Events, where Grade 1=Mild, Grade 2=moderate, Grade 3=severe and Grade 4=potentially life-threatening.
Concentration at the End of a Dosing Interval (Ctau) for GSK1265744 at Week 2	pre-dose, 1, 2, 3, 4, 8 and 24 hours post dose at Week 2	Blood samples for PK analysis were collected at the indicated time points. The PK parameters were calculated by standard non-compartmental analysis.
Cmax for Rilpivirine	pre-dose and 2 to 4 hours post-dose at Weeks 26 and 36	Data was not collected for analysis of rilpivirine PK parameters.
AUC(0 to Tau) for Rilpivirine	pre-dose and 2 to 4 hours post-dose at Weeks 26 and 36	Data was not collected for analysis of rilpivirine PK parameters.
Ctau for Rilpivirine	pre-dose and 2 to 4 hours post-dose at Weeks 26 and 36	Data was not collected for analysis of rilpivirine PK parameters.