AZD8108 SAD/MAD in Healthy Volunteers

This is a randomized, double-blind, placebo-controlled study of single and multiple ascending dosage levels of AZD8108 in healthy volunteers. The study includes an up to 28-day screening period, an in-house period during which AZD8108 or placebo will be administered orally as a solution, and a 4- to 10-day follow-up period after discharge.

Inclusion Criteria: Inclusion Criteria: 1. Subjects must understand the nature of the study and must provide signed and dated written informed consent in accordance with local regulations before the conduct of any study-specific procedures. 2. Men and postmenopausal or surgically sterile women age 18-55 years inclusive. 3. Subjects must have a body mass index (BMI) between 19 and 30, inclusive and weigh between 50kg and 100kg inclusive. 4.Subjects must be fluent in English. - Exclusion Criteria:1. A history or presence of a clinically significant hepatic, renal, gastrointestinal, cardiovascular, endocrine, respiratory, immunologic, hematologic, dermatologic, or neurologic abnormality. 2. A clinically significant abnormality on physical examination, neurological examination, EEG, ECG, vital signs or laboratory evaluations at screen or between screen and dose administration. 3. A history of seizure. 4.A history of head trauma, including closed head injury with loss of consciousness. 5.Any history of suicide attempt or suicidal behavior, or, in the opinion of the investigator, clinically significant risk of suicide or violent behavior. 6. Urine drug screen positive for a drug of abuse 7. A family history of schizophrenia, schizoaffective disorder, or psychosis in first degree relatives.