A Phase 1, Open-label, 3-Part Study to Assess Potential Drug-Drug Interactions of E2086 When Coadministered Orally With Itraconazole, Carbamazepine, Midazolam, Dextromethorphan, Bupropion, or Combined Oral Contraceptives in Healthy Subjects

Inclusion Criteria: 1. Body Mass Index (BMI) greater than or equal to (≥) 18 and less than (\<) 30 kilograms per square meter (kg/m2) at Screening 2. Non-smoking and non-vaping, healthy male or female, age ≥18 years and ≤55 years old at the time of informed consent (only Parts A and B). 3. Non-smoking and non-vaping, healthy female, age ≥18 years and ≤55 years old at the time of informed consent (only Part C). Exclusion Criteria: 1. Females who are breastfeeding or pregnant at Screening or Baseline (as documented by a positive beta-human chorionic gonadotropin \[ß-hCG\] or human chorionic g…