Conditions: Hypertension
Allocation: RANDOMIZED | Intervention model: SINGLE_GROUP
Enrollment: 25
Healthy volunteers: yes

Brief summary:
A three panel study, to determine if MK-8266 given as a single dose is sufficiently safe and well tolerated. Panel A and B will consist of healthy young males and Panel C will consist of subjects with mild to moderate hypertension. The primary hypotheses for the study are that MK-8266 given as single doses is sufficiently safe and well tolerated to permit continued clinical investigation in healthy young male volunteers and male participants with mild-to-moderate hypertension and that in males with mild to moderate hypertension, at a single oral dose of MK-8266 that is sufficiently safe and well-tolerated, postdose mean time-weighted average across 24 hours of aortic augmentation index (TWA0-12hrs AIx) is reduced compared to placebo. A mean decrease of ≥ 5 percentage points is considered clinically meaningful.

Detailed description:
Three panels, each consisting of either 8 or 9 participants (8 healthy young males in Panel A and Panel B; and 9 participants with mild to moderate hypertension in Panel C) will be randomized to receive either MK-8266 or matching placebo in either a 6:2 ratio (Panel A and Panel B) or 6:3 ratio (Panel C), respectively, in up to 5 treatment (1 to 5) periods in Panel A and up to 4 treatment (1 to 4) periods in Panel B and Panel C. In all panels, doses will be escalated in a rising, fixed sequence. Some participants took study drug after fasting and some with food.

Arms:
arm 1: MK-8266 in Period 1: 0.1 mg/ Period 2: 0.2 mg/ Period 3: placebo/ Period 4: 1.0 mg/ Period 5: 1.0 mg dose followed in 6 hours by a 0.8 mg dose. arm 2: MK-8266 in Period 1: 0.1 mg/ Period 2: 0.2 mg/ Period 3: 0.5 mg/ Period 4: placebo/ Period 5: 1.0 mg dose followed in 6 hours by a 0.8 mg dose. arm 3: MK-8266 in Period 1: 0.1 mg/ Period 2: placebo/ Period 3: 0.5/ Period 4: 1.0 mg/ Period 5: placebo. arm 4: MK-8266 in Period 1: placebo/ Period 2: 0.2 mg/ Period 3: 0.5 mg/ Period 4: 1.0 mg/ Period 5: 1.0 mg dose followed in 6 hours by a 0.8 mg dose. arm 5: MK-8266 in Period 1: 0.4 mg/ Period 2: 1.2 mg/ Period 3: placebo/ Period 4: 0.4 mg fed/ Period 5: na. arm 6: MK-8266 in Period 1: 0.4 mg/ Period 2: placebo/ Period 3: 1.2 mg dose followed in 6 hours by a 0.6 mg dose/ Period 4: 0.4 mg fed/ Period 5: na. arm 7: MK-8266 in Period 1: 0.4 mg/ Period 2: 1.2 mg/ Period 3: 1.2 mg dose followed in 6 hours by a 0.6 mg dose/ Period 4: 0.4 mg fed/ Period 5: na. arm 8: MK-8266 in Period 1: placebo/ Period 2: 1.2 mg/ Period 3: 1.2 mg dose followed in 6 hours by a 0.6 mg dose/ Period 4: placebo/ Period 5: na. arm 9: Period 1: placebo/ Period 2 1.2 mg dose followed in 8 hours by a 1.0 mg dose/ Period 3: 1.0 mg dose followed in 6 hours by a 0.6 mg dose followed in 6 hours by a 0.6 mg dose/ Period 4: 1.0 mg dose followed in 6 hours by a 1.0 mg dose followed in 6 hours by a 0.6 mg dose/ Period 5: na arm 10: Period 1: placebo/ Period 2 1.2 mg dose followed in 8 hours by a 1.0 mg dose/ Period 3: 1.0 mg dose followed in 6 hours by a 0.6 mg dose followed in 6 hours by a 0.6 mg dose/ Period 4: placebo/ Period 5: na arm 11: Period 1: 1.0 mg dose followed in 8 hours by a 0.8 mg dose/ Period 2 placebo/ Period 3: 1.0 mg dose followed in 6 hours by a 0.6 mg dose followed in 6 hours by a 0.6 mg dose/ Period 4: 1.0 mg dose followed in 6 hours by a 1.0 mg dose followed in 6 hours by a 0.6 mg dose/ Period 5: na arm 12: Period 1: 1.0 mg dose followed in 8 hours by a 0.8 mg dose/ Period 2: placebo/ Period 3: 1.0 mg dose followed in 6 hours by a 0.6 mg dose followed in 6 hours by a 0.6 mg dose/ Period 4: placebo/ Period 5: na arm 13: Period 1: 1.0 mg dose followed in 8 hours by a 0.8 mg dose/ Period 2: 1.2 mg dose followed in 8 hours by a 1.0 mg dose// Period 3: placebo/ Period 4: 1.0 mg dose followed in 6 hours by a 1.0 mg dose followed in 6 hours by a 0.6 mg dose/ Period 5: na arm 14: Period 1: 1.0 mg dose followed in 8 hours by a 0.8 mg dose/ Period 2: 1.2 mg dose followed in 8 hours by a 1.0 mg dose// Period 3: placebo/ Period 4: placebo/ Period 5: na

Interventions: intervention 1: MK-8266 0.1 mg intervention 2: MK-8266 1.0 mg intervention 3: Placebo
Intervention descriptions: intervention 1: Single oral doses of 0.1 to 1.2 mg of MK-8266 in 0.1 capsule form. Participants will fast for 8 hours prior to dosing. There will be at least a 7- day washout period between doses for any given participant. Some participants will receive study drug with food. intervention 2: MK-8266 1.0 mg oral capsule. Participants will fast for 8 hours prior to dosing. There will be at least a 7- day washout period between doses for any given participant. intervention 3: Placebo to match MK-8266 0.1 or 1.0 mg. Participants will fast for 8 hours prior to dosing. There will be at least a 7- day washout period between doses for any given participant.

Protocol document: