Part 1: Number of Participants With Non-serious Adverse Event (SAEs) and SAEs
An AE is any untoward medical occurrence in a clinical study participant, temporally associated with the use of a study intervention, whether or not considered related to the study intervention. A SAE is defined as any untoward medical occurrence that, at any dose: results in death and is life-threatening which requires inpatient hospitalization or prolongation of existing hospitalization, results in persistent disability or incapacity and birth defect or congenital anomaly, or any other situation that require medical or scientific judgement. Number of participants with common more than or equal to (>=)5 percent (%) non-serious AEs and SAEs are presented.
Part 2: Number of Participants With Non-SAEs and SAEs
An AE is any untoward medical occurrence in a clinical study participant, temporally associated with the use of a study intervention, whether or not considered related to the study intervention. A SAE is defined as any untoward medical occurrence that, at any dose: results in death and is life-threatening which requires inpatient hospitalization or prolongation of existing hospitalization, results in persistent disability or incapacity and birth defect or congenital anomaly, or any other situation that require medical or scientific judgement. All AEs were planned to be collected from the start of treatment until the follow-up visit.
Part 1: Number of Participants With Clinical Chemistry Parameters by Maximum Grade Increase Post-Baseline
Blood samples were collected for the analysis of following clinical chemistry parameters: Glucose, alkaline phosphatase, alanine aminotransferase (ALT), amylase, aspartate aminotransferase (AST), direct bilirubin, total bilirubin, calcium, creatinine, potassium, lipase and sodium. The clinical chemistry abnormalities were graded using the Division of Acquired immunodeficiency syndrome (DAIDS) criteria and grades were derived based on numeric criteria as defined in DAIDS Version 2.1 and did not take into consideration of clinical signs or symptoms. Grade 1: mild; Grade 2: moderate; Grade 3: severe or medically significant; Grade 4: life-threatening consequences. Higher grade indicates more severe condition. Baseline is defined as the latest pre-dose assessment. Number of participants with clinical chemistry parameters by maximum grade increase post-Baseline is presented.
Part 2: Number of Participants With Clinical Chemistry Parameters by Maximum Grade Increase Post-Baseline
Blood samples were planned to be collected for the analysis of the following clinical chemistry parameters: Glucose, alkaline phosphatase, ALT, amylase, AST, direct and total bilirubin, calcium, creatinine, potassium, lipase and sodium. Baseline is defined as the latest pre-dose assessment.
Part 1: Number of Participants With Hematology Parameters by Maximum Grade Increase Post-Baseline
Blood samples were collected for the analysis of following hematology parameters: Cluster of differentiation (CD) 4 cells, hemoglobin, lymphocytes, neutrophils, platelets and leukocytes. The hematology abnormalities were graded using the DAIDS criteria and grades were derived based on numeric criteria as defined in DAIDS Version 2.1 and did not take into consideration of clinical signs or symptoms. Grade 1: mild; Grade 2: moderate; Grade 3: severe or medically significant; Grade 4: life-threatening consequences. Higher grade indicates more severe condition. Baseline is defined as the latest pre-dose assessment. Number of participants with hematology parameters by maximum grade increase post-Baseline is presented.
Part 2: Number of Participants With Hematology Parameters by Maximum Grade Increase Post-Baseline
Blood samples were planned to be collected for the analysis of the following hematology parameters: CD4 cells, hemoglobin, lymphocytes, neutrophils, platelets and leukocytes. Baseline is defined as the latest pre-dose assessment.
Part 1: Number of Participants With Urinalysis Parameters by Any Increase in Discrete or Character Values Post Baseline
Urine samples were collected for the analysis of urine parameters including bilirubin, glucose, ketones, leukocyte esterase, nitrite, occult blood, protein and urobilinogen. The urinalysis abnormalities were graded using the DAIDS criteria and grades were derived based on numeric criteria as defined in DAIDS Version 2.1 and did not take into consideration of clinical signs or symptoms. Baseline is defined as the latest pre-dose assessment. Number of participants with urinalysis parameters by any increase in discrete or character values post Baseline is presented.
Part 2: Number of Participants With Urinalysis Parameters by Any Increase in Discrete or Character Values Post Baseline
Urine samples were planned to be collected for the analysis of urine parameters including bilirubin, glucose, ketones, leukocyte esterase, nitrite, occult blood, protein and urobilinogen. Baseline is defined as the latest pre-dose assessment.
Part 1: Number of Participants With Worst Case Pulse Rate Post Baseline
Pulse rate was measured in a semi-supine position after 5 minutes of rest. Participants are counted in the worst case category that their value changes to (low, within range or no change, or high), unless there is no change in their category. Participants whose value category are unchanged (e.g., High to High), or whose value became within range, are recorded in the "To within Range or No Change" category. Participants with missing Baseline value are assumed to have within range value. Participants were counted twice if the participant had both values that changed 'To Low' and 'To High'. Baseline is defined as the latest pre-dose assessment. Number of participants with pulse rate change to low or to high and no change post Baseline is presented.
Part 2: Number of Participants With Worst Case Pulse Rate Post Baseline
Pulse rate was planned to be measured in a semi-supine position after 5 minutes of rest. Baseline is defined as the latest pre-dose assessment.
Part 1: Change From Baseline in Body Temperature
Body temperature was measured in a semi-supine position after 5 minutes of rest. Baseline is defined as the latest pre-dose assessment with a non-missing value, including those from unscheduled visits. Change from Baseline value is defined as post-dose value minus Baseline value.
Part 2: Change From Baseline in Body Temperature
Body temperature was planned to be measured in a semi-supine position after 5 minutes of rest. Baseline is defined as the latest pre-dose assessment with a non-missing value, including those from unscheduled visits.
Part 1: Change From Baseline in Respiratory Rate
Respiratory rate was measured in a semi-supine position after 5 minutes of rest. Baseline is defined as the latest pre-dose assessment with a non-missing value, including those from unscheduled visits. Change from Baseline value is defined as post-dose value minus Baseline value.
Part 2: Change From Baseline in Respiratory Rate
Respiratory rate was planned to be measured in a semi-supine position after 5 minutes of rest. Baseline is defined as the latest pre-dose assessment with a non-missing value, including those from unscheduled visits.
Part 1: Number of Participants With Worst Case Systolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) Post Baseline
SBP and DBP was measured in a semi-supine position after 5 minutes of rest. Participants are counted in the worst case category that their value changes to low, within range or no change, or high), unless there is no change in their category. Participants whose value category are unchanged (e.g., High to High), or whose value became within range, are recorded in the "To within Range or No Change" category. Participants with missing Baseline value are assumed to have within range value. Participants were counted twice if the participant had both values that changed 'To Low' and 'To High'. Baseline is defined as the latest pre-dose assessment. Number of participants with SBP and DBP change to low and to high and no change post Baseline is presented.
Part 2: Number of Participants With Worst Case SBP and DBP Post Baseline
SBP and DBP was planned to be measured in a semi-supine position after 5 minutes of rest. Baseline is defined as the latest pre-dose assessment.
Part 1: Number of Participants With Clinical Significant Abnormal Electrocardiogram (ECG) Findings
A 12-lead ECG was recorded with the participant in a semi-supine position after a rest of 5 minutes. Twelve lead ECGs were obtained by using an automated ECG machine. Number of participants with clinical significant abnormal ECG findings are presented.
Part 2: Number of Participants With Clinical Significant Abnormal ECG Findings
12-lead ECG recordings was planned to be measured.
Part 1: Area Under the Plasma Concentration Time Curve From Zero to t (AUC[0-t]) Following Single Dose Administration of GSK3732394
Blood samples were collected at indicated time points for pharmacokinetic (PK) analysis of GSK3732394. PK parameters were analyzed using standard non-compartmental analysis.
Part 2: AUC(0-t) After Repeat Dosing of GSK3732394 in First Week
Blood samples were planned to be collected at indicated time points for PK analysis of GSK3732394.
Part 1: Area Under the Concentration-time Curve From Time Zero (Pre-dose) Extrapolated to Infinite Time (AUC[0-infinity]) Following Single Dose Administration of GSK3732394
Blood samples were collected at indicated time points for PK analysis of GSK3732394. PK parameters were analyzed using standard non-compartmental analysis.
Part 2: AUC(0-infinity) After Repeat Dosing of GSK3732394 in First Week
Blood samples were planned to be collected at indicated time points for PK analysis of GSK3732394.
Part 1: Maximum Observed Concentration (Cmax) Following Single Dose Administration of GSK3732394
Blood samples were collected at indicated time points for PK analysis of GSK3732394. PK parameters were analyzed using standard non-compartmental analysis.
Part 2: Cmax After Repeat Dosing of GSK3732394 in First Week
Blood samples were planned to be collected at indicated time points for PK analysis of GSK3732394.
Part 2: Cmax After Repeat Dosing of GSK3732394 in Last Week
Blood samples were planned to be collected at indicated time points for PK analysis of GSK3732394.
Part 1: Time of Occurrence of Cmax (Tmax) After Single Dose Administration of GSK3732394
Blood samples were collected at indicated time points for PK analysis of GSK3732394. PK parameters were calculated using standard non-compartmental analysis.
Part 2: Tmax After Repeat Dosing of GSK3732394 in First Week
Blood samples were planned to be collected at indicated time points for PK analysis of GSK3732394.
Part 2: Tmax After Repeat Dosing of GSK3732394 in Last Week
Blood samples were planned to be collected at indicated time points for PK analysis of GSK3732394.
Part 1: Lag Time Before Observation of Drug Concentrations (Tlag) After Single Dose Administration of GSK3732394
Blood samples were collected at indicated time points for PK analysis of GSK3732394. PK parameters were calculated using standard non-compartmental analysis.
Part 2: Tlag After Repeat Dosing of GSK3732394 in First Week
Blood samples were planned to be collected at indicated time points for PK analysis of GSK3732394.
Part 1: Last Observable Concentration (Clast) After Single Dose Administration of GSK3732394
Blood samples were collected at indicated time points for PK analysis of GSK3732394. PK parameters were analyzed using standard non-compartmental analysis.
Part 1: Time of Last Observable Concentration (Tlast) After Single Dose Administration of GSK3732394
Blood samples were collected at indicated time points for PK analysis of GSK3732394. PK parameters were analyzed using standard non-compartmental analysis.
Part 1: Apparent Terminal Phase Half-life (t1/2) After Single Dose Administration of GSK3732394
Blood samples were collected at indicated time points for PK analysis of GSK3732394. PK parameters were analyzed using standard non-compartmental analysis.
Part 2: T1/2 After Repeat Dosing of GSK3732394 in Last Week
Blood samples were planned to be collected at indicated time points for PK analysis of GSK3732394.
Part 1: Apparent Clearance (CL/F) After Single Dose Administration of GSK3732394
Blood samples were collected at indicated time points for PK analysis of GSK3732394. PK parameters were analyzed using standard non-compartmental analysis.
Part 2: CL/F After Repeat Dosing of GSK3732394 in Last Week
Blood samples were planned to be collected at indicated time points for PK analysis of GSK3732394.
Part 2: Area Under the Concentration Time Curve at Steady State Within the Dosing Interval (AUC[0-tau]) After Repeat Dosing of GSK3732394 in Last Week
Blood samples were planned to be collected at indicated time points for PK analysis of GSK3732394.
Part 2: Trough Concentration (Ctrough) After Repeat Dosing of GSK3732394 in Last Week
Blood samples were planned to be collected at indicated time points for PK analysis of GSK3732394.
Part 2: Accumulation Ratio Using AUC(0-tau) (RAUC[0-tau]) After Repeat Dosing of GSK3732394
Blood samples were planned to be collected at indicated time points for PK analysis of GSK3732394. RAUC(0-tau) was planned to be calculated as the ratio of AUC(0-tau) on week 4 to AUC(0-tau) on week 1 .
Part 2: Accumulation Ratio Using Cmax (RCmax) After Repeat Dosing of GSK3732394
Blood samples were planned to be collected at indicated time points for PK analysis of GSK3732394. RCmax was planned to be calculated as the ratio of Cmax on Week 4 to Cmax on Week 1.
Part 2: Accumulation Ratio Using Ctrough (RCtrough) After Repeat Dosing of GSK3732394
Blood samples were planned to be collected at indicated time points for PK analysis of GSK3732394. RCtrough was planned to be calculated as the ratio of Ctrough on Week 4 to Ctrough on Week 1.
Part 1: Change From Baseline in Percent of CD4 Receptor Occupancy (RO) After Single Dose Administration of GSK3732394
Blood samples were collected at indicated time points for Pharmacodynamic (PD) analysis of CD4 receptors occupied by GSK3732394 on CD4+ T cells. Baseline is defined as the latest pre-dose assessment with a non-missing value, including those from unscheduled visits. Change from Baseline value is defined as post-dose value minus Baseline value.
Part 2: Change From Baseline in Percent of CD4 RO After Multiple Dose Administration of GSK3732394
Blood samples were planned to be collected at indicated time points for PD analysis of CD4 receptors occupied by GSK3732394 on CD4+ T cells. Baseline is defined as the latest pre-dose assessment with a non-missing value, including those from unscheduled visits.
Part 1: Change From Baseline in CD3+ Cells Following Single Dose Administration of GSK3732394
Blood samples were collected at indicated time points for analysis of CD3+ cells. Baseline is defined as the latest pre-dose assessment with a non-missing value, including those from unscheduled visits. Change from Baseline value is defined as post-dose value minus Baseline value.
Part 2: Change From Baseline in CD3+ Cells Following Multiple Dose Administration of GSK3732394
Blood samples were planned to be collected at indicated time points for analysis of CD3+ cells. Baseline is defined as the latest pre-dose assessment with a non-missing value, including those from unscheduled visits.
Part 1: Change From Baseline in CD4+ Cells Following Single Dose Administration of GSK3732394
Blood samples were collected at indicated time points for analysis of CD4+ cells. Baseline is defined as the latest pre-dose assessment with a non-missing value, including those from unscheduled visits. Change from Baseline value is defined as post-dose value minus Baseline value.
Part 2: Change From Baseline in CD4+ Cells Following Multiple Dose Administration of GSK3732394
Blood samples were planned to be collected at indicated time points for analysis of CD4+ cells. Baseline is defined as the latest pre-dose assessment with a non-missing value, including those from unscheduled visits.
Part 1: Change From Baseline in CD8+ Cells Following Single Dose Administration of GSK3732394
Blood samples were collected at indicated time points for analysis of CD8+ cells. Baseline is defined as the latest pre-dose assessment with a non-missing value, including those from unscheduled visits. Change from Baseline value is defined as post-dose value minus Baseline value.
Part 2: Change From Baseline in CD8+ Cells Following Multiple Dose Administration of GSK3732394
Blood samples were planned to be collected at indicated time points for analysis of CD8+ cells. Baseline is defined as the latest pre-dose assessment with a non-missing value, including those from unscheduled visits.
Part 1: Change From Baseline in CD4+ Cell Median Fluorescence Intensity (MFI) Following Single Dose Administration of GSK3732394
Blood samples were collected at indicated time points for analysis of CD4+ cell MFI. Baseline is defined as the latest pre-dose assessment with a non-missing value, including those from unscheduled visits. Change from Baseline value is defined as post-dose value minus Baseline value.
Part 2: Change From Baseline in CD4+ Cell MFI Following Multiple Dose Administration of GSK3732394
Blood samples were planned to be collected at indicated time points for analysis of CD4+ cell MFI. Baseline is defined as the latest pre-dose assessment with a non-missing value, including those from unscheduled visits.
Part 1: Number of Participants With Anti-GSK3732394 Antibodies on Day 28
Serum samples were collected to analyze antibodies against GSK3732394. The presence of anti-GSK3732394 antibodies was determined in serum samples using a validated bioanalytical method, which included a screening assay, confirmation assay and titer analysis. Positive samples were further characterized with additional assays to determine the specificity of the anti-GSK3732394 antibodies. Number of participants with presence of anti-GSK3732394 antibodies are presented.
Part 2: Number of Participants With Anti-GSK3732394 Antibodies
Serum samples were planned to be collected to analyze antibodies against GSK3732394.
Part 1: Titer of Anti-drug Antibodies (ADAs) Against GSK3732394 on Day 28
Serum samples were collected to analyze the titers of antibodies against GSK3732394. The presence of anti-GSK3732394 antibodies was determined in serum samples using a validated bioanalytical method, which included a screening assay, confirmation assay and titer analysis. Positive samples were further characterized with additional assays to determine the specificity of the anti-GSK3732394 antibodies. Positive samples were titrated to obtain the titers of antibodies.
Part 2: Titer of ADAs Against GSK3732394
Serum samples were planned to be collected to analyze the titers of antibodies against GSK3732394.