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

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.

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.

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.

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.

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.

Plasma samples for quantitative analysis of HIV-1 RNA were collected at indicated time points. Baseline value is the last pre-treatment value observed.

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.

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.

CD4+ cell counts were assessed by flow cytometry. Baseline value is the last pre-treatment value observed.

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.

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.

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.

Number of participants with >=90% adherence to study treatment based on pill count is summarized.

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.

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.

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.

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.

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.

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.

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.

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.

Blood samples were collected for the analysis of ALT, AST and CK. Baseline value is the last pre-treatment value observed.

Blood samples were collected for the analysis of creatinine and total bilirubin (T. bilirubin). Baseline value is the last pre-treatment value observed.

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.

Blood samples were collected for the analysis of hemoglobin level. Baseline value is the last pre-treatment value observed.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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

Blood samples for PK analysis were collected at the indicated time points. The PK parameters were calculated by standard non-compartmental analysis.

Blood samples for PK analysis were collected at the indicated time points. The PK parameters were calculated by standard non-compartmental analysis.

Data was not collected for analysis of rilpivirine PK parameters.

Data was not collected for analysis of rilpivirine PK parameters.

Data was not collected for analysis of rilpivirine PK parameters.