 This study enrolled 47 participants and consisted of 6 Cohorts. Participants in Cohorts 1, 2, 3, 5 and 6 were randomized to receive a single dose of TAK-137 or placebo after a 10-hour fast. Participants in Cohort 4 were randomized to receive a single dose of TAK-137 or placebo under fasted conditions, followed by a single dose of TAK-137 or placebo under fed conditions 14 days later. Participants in cohort 4 will receive the same dose in both fasted and fed conditions. The starting dose was 2 mg followed by administrations of 5, 10, 0.5 and 20 mg. 