Conditions: Pharmacokinetics
Allocation: RANDOMIZED | Intervention model: PARALLEL
Enrollment: 16
Healthy volunteers: yes

Brief summary:
The purpose of this randomized, double-blind, placebo-controlled study is to evaluate the safety, pharmacokinetics and pharmacodynamics of rising, single oral doses MK-1064 in healthy, young, male participants. The primary pharmacokinetic hypothesis is that at least one dose of MK-1064 that is generally safe and well tolerated produces an average MK-1064 plasma concentration from 0 to 4 hours of ≥2.2 μM. Since this is an early Phase I assessment of MK-1064 in humans, the study protocol allows for modifications to the outlined dose, dosing regimen and/or clinical or laboratory procedures, if required to address study objectives and/or to ensure appropriate safety monitoring of participants.

Detailed description:
Two panels (Panels A and B), will receive alternating single rising oral doses of MK-1064/placebo (i.e., order of administration will be Panel A 5 mg, Panel B 10 mg, Panel A 25 mg, Panel B 50 mg, and continuing in this alternating sequence). Following dosing for a given treatment period, a minimum of 3 days will elapse before administration of the next scheduled dose. After administration of each dose, safety and tolerability will be reviewed. The decision to proceed to the next Panel/Period in the alternating sequence will be contingent on acceptable safety and tolerability data from the preceding Panels/Periods.

Arms:
arm 1: Within each of up to 4 treatment periods, 6 participants were randomly assigned to receive single oral doses of MK-1064 5 mg in a fasted state. There was to be a minimum 7-day washout between treatment periods for any given participant. arm 2: Within each of up to 4 treatment periods, 6 participants were randomly assigned to receive single oral doses of MK-1064 10 mg in a fasted state. There was to be a minimum 7-day washout between treatment periods for any given participant. arm 3: Within each of up to 4 treatment periods, 6 participants were randomly assigned to receive single oral doses of MK-1064 25 mg in a fasted state. There was to be a minimum 7-day washout between treatment periods for any given participant. arm 4: Within each of up to 4 treatment periods, 6 participants were randomly assigned to receive single oral doses of MK-1064 50 mg in a fasted state. There was to be a minimum 7-day washout between treatment periods for any given participant. arm 5: Within each of up to 4 treatment periods, 6 participants were randomly assigned to receive single oral doses of MK-1064 100 mg in a fasted state. There was to be a minimum 7-day washout between treatment periods for any given participant. arm 6: Within each of up to 4 treatment periods, 6 participants were randomly assigned to receive single oral doses of MK-1064 150 mg in a fasted state. There was to be a minimum 7-day washout between treatment periods for any given participant. arm 7: Within each of up to 4 treatment periods, 6 participants were randomly assigned to receive single oral doses of MK-1064 200 mg in a fasted state. There was to be a minimum 7-day washout between treatment periods for any given participant. arm 8: Within each of up to 4 treatment periods, 6 participants were randomly assigned to receive single oral doses of MK-1064 250 mg in a fasted state. There was to be a minimum 7-day washout between treatment periods for any given participant. arm 9: In Period 5, participants received a single MK-1064 dose of 25 mg administered in the evening following a standard high-fat breakfast. arm 10: In Period 5, participants received a single MK-1064 dose of 50 mg administered in the evening after a 4-hour fast. arm 11: Within each of up to 5 treatment periods, 2 participants were randomly assigned to receive single oral doses of matching placebo in a fasted stated. There was to be a minimum 7-day washout between treatment periods for any given participant.

Interventions: intervention 1: MK-1064 intervention 2: Placebo
Intervention descriptions: intervention 1: Dose for each period administered as oral MK-1064 tablets (1, 10 and 50 mg strengths) intervention 2: Dose for each period administered as oral placebo tablets matching active MK-1064 tablets

Protocol document: