A Study to Assess the Safety, Tolerability and Pharmacokinetics of Repeated Dosing Regimens of AL-794 in Healthy Volunteers

A Randomized, Double-blind, Placebo-controlled Study to Assess the Safety, Tolerability and Pharmacokinetics of Repeated Dosing Regimens of AL-794 in Healthy Volunteers

The purpose of this study is to evaluate the safety and tolerability (including incidence of central nervous system [CNS] related events such as lightheadedness and dizziness), of multiple oral doses of AL-794 in healthy volunteers (HV). Also, to evaluate the pharmacokinetics of ALS-033719 and ALS-033927 in plasma after multiple oral doses of AL-794 in HV.

Inclusion Criteria:

• Participant has provided written informed consent
• In the Investigator's opinion, the participant is able to understand and comply with protocol requirements, instructions, and protocol-stated restrictions and is likely to complete the study as planned
• Participant is deemed healthy on the basis of physical examination, medical history, vital signs, 12-lead electrocardiogram (ECG), and clinical laboratory tests performed at screening
• Body mass index (BMI) 18 - 32 kilogram per meter square (kg/m^2), inclusive. The minimum weight is 50 kilogram (kg). No more than 25 percent (%) of participants may be enrolled with a BMI greater than or equal to (>=) 30 kg/m^2
• Female participants must have a negative serum (beta-human chorionic gonadotropin [beta-hCG]) pregnancy test at screening and on Day -1 (admission)

Exclusion Criteria:

• Female who is pregnant as confirmed by a positive beta-human chorionic gonadotropin (beta-hCG) laboratory test, or who was pregnant within 6 months prior to study start, or who is breast-feeding, or who is planning to become pregnant from signing of the informed consent form (ICF) until 90 days after the last dose of study drug
• Male whose female partner is pregnant or contemplating pregnancy from the date of screening until 90 days after their last dose of study drug
• Participant with one or more of the following laboratory abnormalities at screening: aspartate aminotransferase (AST) or alanine aminotransferase (ALT) >= 1.2*upper limit of normal (ULN); Alkaline phosphatase (ALP) >= 1.2*ULN; Total bilirubin >= 1.2*ULN; Clinically significant laboratory abnormalities or abnormalities which are deemed to interfere with the ability to interpret study data
• Creatinine clearance less than (<) 90 milliliter per minute (mL/min) (using the Chronic Kidney Disease Epidemiology Collaboration [CKD-EPI] equation)
• Positive screening test for human immunodeficiency virus type 1 (HIV-1) or HIV-2 antibody, or for current hepatitis A infection (confirmed by hepatitis A antibody immunoglobulin M [IgM]), or hepatitis B virus (HBV) infection (confirmed by hepatitis B surface antigen [HBsAg]), or hepatitis C virus (HCV) infection (confirmed by HCV antibody) at screening