Safety, Tolerability, and Pharmacokinetics of Escalating Single Doses of TAK-935

A Phase 1, Randomized, Double-Blind, Placebo-Controlled, Safety, Tolerability and Pharmacokinetic Study of Escalating Single Doses of TAK-935 in Healthy Subjects

The purpose of this study is to characterize the safety and tolerability profile of TAK-935 in healthy participants when administered as a single dose of oral solution at escalating dose levels.

The drug being tested in this study is TAK-935. TAK-935 is being tested to find a safe and well-tolerated dose and to assess how TAK-935 is processed by the body. This study will look at side effects and lab results in people who take TAK-935 and is designed as a randomized dose-rising study.

The study will consist of 6 Cohorts with 8 participants in each Cohort. In each Cohort, 6 participants will receive a single dose of TAK-935 and 2 participants will receive placebo after a 10-hour fast. The starting dose will be 15 mg followed by planned doses of 50, 200, 600, 900 and not to exceed 1350 mg in subsequent cohorts.

This single-center trial will be conducted in the United States. The overall time to participate in this study is up to 51 days. Participants will make 2 visits to the clinic, including one 7-day period of confinement to the clinic. All participants will be contacted by telephone 14 days after the dose of study drug for a follow-up assessment.

Inclusion Criteria:

1. Is a healthy male or female adult who is 19 to 55 years of age inclusive at the time of informed consent.
2. Weighs at least 45 kg and has a body mass index (BMI) between 18.0 and 30.0 kg/m^2, inclusive at the Screening Visit.

Exclusion Criteria:

1. Has uncontrolled, clinically significant neurological (including seizure disorders), cardiovascular, pulmonary, hepatic, renal, metabolic, gastrointestinal, urological, immunologic, endocrine disease, or psychiatric disorder, or other abnormality.
2. Has a known hypersensitivity to any component of the formulation of TAK-935.
3. There is any finding in the participant's medical history, significant results from physical examination, or safety laboratory tests.