This will be a two-part study in healthy adults. Part A is a phase 1, non-randomized, open label, single-dose, single-centre mass balance study utilizing a radiolabeled dose to investigate the recovery, excretion, and pharmacokinetics of oral GSK1265744 in a cohort of 6 healthy adult male subjects. Subjects will undergo a pre-study screening visit within 30 days of the first dose and those who successfully pass pre-study assessments and meet eligibility criteria will be enrolled into the study to receive the equivalent of a 30 mg dose of GSK1265744 as an oral solution, containing approximately 70 microcuries (mcg Ci) \[0.96 millisieverts (mSv)\] of radioactivity under fasted conditions. Blood, urine and fecal samples will be collected for a maximum of 504 hours (21 days) following study drug administration. In Part B, approximately 10 healthy male and female subjects will be enrolled to evaluate the single-dose safety, tolerability and PK of supratherapeutic dose of GSK1265744 150 mg compared with placebo. Each subject will receive a single dose of GSK1265744 150 mg or placebo on Day 1 under fasting conditions in the morning. Blood, urine and fecal samples will be collected for 336 hours (14 days) following dosing.
Age range
18 Years – 60 Years
Sex
ALL
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Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
Part A: Percent recovery of total radioactive [14C] GSK1265744 in urine and feces.
Timeframe: Up to 21 days
Part A: Composite of plasma GSK1265744 PK parameters to access total radioactivity in blood
Timeframe: Pre-dose, 0.5, 1, 2, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120, 144, 168, 192, 216, 240, 288, 312 and 336 hours post dose.
Part B: Number of participants with the use of concurrent medication as a measure of safety and tolerability
Timeframe: Up to 14 days
Part B: Absolute values and changes over time of hematology as a measure of safety and tolerability.
Timeframe: Up to 14 days
Part B: Absolute values and changes over time of clinical chemistry as a measure of safety and tolerability.
Timeframe: Up to 14 days
Part B: Absolute values and changes over time of urinalysis as a measure of safety and tolerability.
Timeframe: Up to 14 days
Part B: Absolute values and changes over time of vital signs as a measure of safety and tolerability.
Timeframe: Up to 14 days
Part B: Absolute values and changes over time of ECG intervals and ECG rhythm as a measure of safety and tolerability.
Timeframe: Up to 14 days
Part B: Number of participants with adverse events as a measure of safety and tolerability
Timeframe: Up to 14 days
Part B: Composite of plasma GSK1265744 PK parameters
Timeframe: Up to 14 days