A Study Comparing Two Different Capsules, APL-101 and PLB-1001 Capsules, in Healthy Chinese and Caucasian Participants

Major Inclusion Criteria: * Must be Chinese (1st generation or 2nd generation Chinese with both Chinese parents), or Caucasian. * Body mass index between 18.0 and 30.0 kg/m2, inclusive. * In good health, determined by no clinically significant findings from medical history, physical examination, 12 lead ECG, vital sign measurements, and clinical laboratory evaluations at screening and at check-in as assessed by the Investigator (or designee). Screening clinical laboratory evaluations may be repeated once at the discretion of the Investigator. * Alanine aminotransferase (ALT) or aspartate aminotransferase (AST) ≤ 1.5 × the upper limit of normal (ULN), total bilirubin ≤ 1.5 × ULN at screening and check-in. Subjects with ALT or AST \>1.0 × ULN combined with total bilirubin \>1.0 × ULN are excluded. * QT interval corrected for heart rate using Fridericia's method (QTcF) ≤ 450 msec confirmed by calculating the mean of the triplicate measurements within 4 weeks prior to Day 1. * Systolic blood pressure between 100 and 140 mmHg or diastolic blood pressure between 50 and 90 mmHg, confirmed by calculating the mean of the triplicate measurements within 4 weeks prior to Day 1. Major Exclusion Criteria: * Significant history or clinical manifestation of any metabolic, allergic, dermatological, hepatic, renal, hematological, pulmonary, cardiovascular, gastrointestinal, neurological, respiratory, endocrine, or psychiatric disorder, as determined by the Investigator. * History of significant hypersensitivity, intolerance, or allergy to any drug compound, food, or other substance, unless approved by the Investigator. * Have positive Coronavirus Disease 2019 (COVID-19) test at screening and/or at check-in, have clinical signs or symptoms of COVID-19 as determined by the Investigator, or have ongoing significant complication(s) from prior COVID-19 infection. * Use or intend to use any nonprescription medications/products including vitamins, minerals, and phytotherapeutic/herbal/plant derived preparations within 14 days prior to check in, unless deemed acceptable by the Investigator. * Have previously completed or withdrawn from this study or any other study investigating APL 101 or similar drug product, and/or have previously received APL 101 or similar drug product.