The proposed indication for GSK1940029 is topical treatment of acne, the early clinical plan will evaluate the irritation potential of GSK1940029 (Study SCD117225 - 3 Part study); and safety, tolerability and pharmacokinetics of GSK1940029 (Study SCD117226 - 2 Part study), after topical administration on healthy subjects and acne patients. Study SCD117226 will be a randomized, single-blind, dose-rising study to evaluate the safety, tolerability and preliminary pharmacokinetics of single and 14 day repeat topical applications of GSK1940029 gel on the intact skin of healthy human subjects. Part 1: (single-dose) subjects will receive 0.3% or 1% GSK1940029 (or matching vehicle), as a single approximately (App) 24 hour (h) (22.5h) application to a surface area of 400 square centimeter (cm\^2) (0.3%), 400 cm\^2 (1%) or 1200 cm\^2 (1%), respectively, in each of three sequential cohorts. Part 2: (repeat-dose) subjects will receive 0.3% or 1% GSK1940029 (or matching vehicle), as 14 daily App24h (22.5h) application to a surface area of 400 cm\^2 (0.3%), 400 cm\^2 (1%) or 1200 cm\^2 (1%), respectively, in each of three sequential cohorts. Parts within Study SCD117225 and Study SCD117226 will have interdependencies. No significant primary irritation signal in Study SCD117225 Part 1 (primary irritation) would allow initiation of Study SCD117226 Part 1. Once safety, tolerability and exposure information are determined in Study SCD117226 Part 1, then Part 2 (cumulative irritation) of Study SCD117225 may be initiated along with Part 2 of Study SCD117226. No significant cumulative irritation signal (study SCD117225 Part 2) in combination with adequate 14-day safety (study SCD117226 Part 2) would allow initiation of Part 3 (facial irritation) of Study SCD117225.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Enrollment
55
Will be supplied as gel for topical application
Will be supplied as gel for topical application
Will be supplied as gel for topical application
GSK Investigational Site
Adelaide, South Australia, Australia
Safety of GSK1940029 as assessed by physical examination findings.
Complete physical examination will include assessments of the head, eyes, ears, nose, throat, skin, thyroid, neurological, lungs, cardiovascular, abdomen (liver and spleen), lymph nodes and extremities
Time frame: Screening, Day -1, and follow-up (FU) (Days 6 to 8) of Part 1; Screening, Day -1, and FU (Days 20 to 22) of Part 2
Safety of GSK1940029 as assessed by vital signs
Vital signs measurements will include systolic and diastolic blood pressure, heart rate and temperature
Time frame: Screening, Days 1, 2 and FU (Days 6 to 8) of Part 1; Screening, Days 1, 2, 7 14, and FU (Days 20 to 22) of Part 2
Safety of GSK1940029 as assessed by 12-lead electrocardiogram (ECG)
Single 12-lead ECG will be obtained at each timepoint
Time frame: Screening, Day 1 and Day 2 of Part 1; Screening, Day 1, 2, 7, 12, 13 and 14 of Part 2
Safety of GSK1940029 as assessed by dual lead telemetry
Continuous dual lead cardiac telemetry will be performed
Time frame: Pre-dose through 4h post-dose on Day 1 of Part 1 and Part 2
Safety of GSK1940029 as assessed by hematology and chemistry parameters of clinical laboratory test
Time frame: Screening, Days 1, 2 and FU (Days 6 to 8) of Part 1; Screening, Days 1, 4, 7, 14, and FU (Days 20 to 22) of Part 2
Safety of GSK1940029 as assessed by urinalysis parameters of clinical laboratory test
Time frame: Screening, Days -1, 1, 2 and FU (Days 6 to 8) of Part 1; Screening, Days -1, 1, 2, 4, 7, 14, , and FU (Days 20 to 22) of Part 2
Safety of GSK1940029 as assessed by urine albumin:creatinine ratio (ACR)
Time frame: Days -1, 1, 2 and FU (Days 6 to 8) of Part 1; Days -1, 1, 2, 4, 7, 14 and FU (Days 20 to 22) of Part 2
Safety of GSK1940029 as assessed by adverse events
Clinical monitoring/observation will be done for adverse events
Time frame: Day -1 to FU (Days 6-8)of Part 1; Day -1 to FU (Day 20 - 22) of Part 2
Plasma GSK1940029 pharmacokinetics (PK)
Blood samples for PK analysis of GSK1940029 will be collected. PK parameters will include Area under the concentration-time curve: from time zero (pre-dose) to last time of quantifiable concentration within a subject across all treatments \[AUC(0-t)\] and from time zero (pre-dose) extrapolated to infinite time \[AUC(0-infinity)\]; maximum observed concentration (Cmax); time of occurrence of cmax (tmax); and terminal phase half-life (t1/2) as data permit
Time frame: Part1: 1h, 2h, 4h, 6h, 8h, 12h, 16h, 22.5h, 24h and 36h post-dose. Part 2: 1h, 2h, 4h, 6h, 8h, 12h, 16h and 22.5h post-Day 1 dose; Pre-dose on Days 2, 12 and 13; and 1h, 2h, 4h, 6h, 8h, 12h, 16h, 22.5h and 22.5-24h post-Day 14 dose
Ocular tolerability of topical applications of GSK1940029
Eye examination will be performed. Ocular evaluations will include slit lamp examination with fluorscein, tear film breakup time, visual acuity and ocular surface disease index
Time frame: Screening, Days -1, 1, 2 and FU (Days 6 to 8) of Part 1; Screening, Days -1, 7, 14 and FU (Days 20 to 22) of Part 2
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