The drug being tested in this study is called TAK-020. TAK-020 is being tested to evaluate safety and tolerability of single doses and 7 days multiple doses of TAK-020 in healthy volunteers. This study will look at the PK characteristics (how the drug acts throughout the body) of the drug and safety and tolerability (lab results, vital signs, ECG, and side effects) in healthy participants who take TAK-020.~The study will enroll a total of approximately 120 participants. This study is designed to consist of 2 sequential parts: Part 1-a SRD, and Part 2-a MRD. Healthy participants for Part 1 will be enrolled into 9 cohorts. Each cohort will have 8 randomized participants with receiving a single dose of TAK-020, and 2 receiving matching placebo under fasted conditions. In Cohorts 1-9 doses of 0.1, 0.5, 2.5, 4.4, 8.8, 17.5, 35, 70 and 105 mg will be evaluated.~Healthy participants for Part 2 will be enrolled into 7 cohorts. Each cohort will have 8 randomized participants, with participants receiving one dose of TAK-020 on Day 1, followed by a washout on Day 2, then daily dosing on Days 3-9 of TAK-020 with 2 participants receiving matching placebo under fasted conditions. In Cohorts 1-4 doses of 3.75, 5.75, 13 and 25 mg will be evaluated. For Cohorts 5-7, the subsequent dose level is to be determined based on data from Part 1 and review of safety, tolerability and PK data from Part 2 Cohorts 1-4.~This single-center trial will be conducted in the United States. The overall time to participate in this study is up to 45 days. Participants in Part 1 will make multiple visits to the clinic including a period of confinement to the clinic and will be contacted by telephone 14 days after the last dose of study drug for a follow-up assessment. Participants in Part 2 will make multiple visits to the clinic including a period of confinement to the clinic and will be observed at the clinic 17 days after the last dose of study drug for a follow-up assessment.
The purpose of this study is to evaluate the safety, tolerability, and pharmacokinetics of ascending single- and multiple-doses of TAK-020 in healthy participants.