A Clinical Pharmacology Study of TS-142 in Patients with Obstructive Sleep Apnea Hypopnea.

Inclusion Criteria: * Japanese male and female, age 20 years or older at the time of informed consent * Patients who meet the Diagnostic and Statistical Manual of Mental Disorders, fifth edition (DSM-5) criteria for obstructive sleep apnea hypopnea * Other protocol defined inclusion criteria could apply Exclusion Criteria: Subjects who meet any of the following criteria will be excluded from this study: * Patients who meet the Diagnostic and Statistical Manual of Mental Disorders, fifth edition (DSM-5) criteria excepting obstructive sleep apnea hypopnea and insomnia disorder * Patients who have clinically significant respiratory dysfunction (bronchiectasis, emphysema, asthma, etc.) other than obstructive sleep apnea hypopnea * Patients with percutaneous arterial oxygen saturation (SpO2) \<94% by pulse oximetry at visit 1 * Other protocol defined exclusion criteria could apply