Drug-Drug Interaction Study Between EDP-235, Itraconazole, Carbamazepine and Quinidine in Healthy Subjects.

Inclusion criteria

• An informed consent document signed and dated by the subject
• Healthy male and female subjects of any ethnic origin between the ages of 18 and 55 years, inclusive
• Screening body mass index (BMI) of 18 to 30 kg/m2 with a minimum body weight of 50 kg
• Female subjects of childbearing potential must agree to use two effective methods of contraception from the date of Screening until 90 days after the last dose of EDP-235. A male participant who has not had a vasectomy and is sexually active with a woman of childbearing potential must agree to use effective contraception from the date of Screening to 90 days after his last dose of study drug.

Exclusion criteria

• Clinically relevant evidence or history of illness or disease
• Pregnant or nursing females
• History of febrile illness within 7 days prior to the first dose of study drug or subjects with evidence of active infection
• A positive urine drug screen at Screening or Day -1
• Current tobacco smokers or use of tobacco within 3 months prior to Screening.
• Any condition possibly affecting drug absorption (e.g., gastrectomy, cholecystectomy)
• History of regular alcohol consumption
• Participation in a clinical trial within 30 days prior to the first dose of study drug
• For Part 2 participants:

• Participants of Asian ancestry, given association of carbamazepine and severe rash (Stevens-Johnson Syndrome [SJS and Toxic Epidermal Necrolysis [TEN]) with HLA-B 1502 in this population
• Platelets, white blood cell count or hemoglobin below the lower limit of normal, due to reported incidence of agranulocytosis and aplastic anemia with carbamazepine.
• For Part 2 and Part 3 participants, the following cardiovascular abnormalities:

• QRS duration >110 ms
• Incomplete right bundle branch block or any complete bundle branch block
• Heart rate <40 or >90 beats per minute (per vital sign capture while rested)
• History of unexplained syncope, structural heart disease, or clinically significant arrhythmias
• Personal or family history of long QT syndrome (genetically proven or suggested by sudden death of a close relative due to cardiac causes at a young age) or Brugada syndrome
• PR interval >220 ms or any 2nd or 3rd degree AV block
• Ventricular pre-excitation
• History of drug allergy to itraconazole or other azole antifungals; history of drug allergy to carbamazepine or carboxamide derivatives [e.g. oxcarbazepine]; known hypersensitivity to drugs structurally related to carbamazepine [e.g.: tricyclic antidepressants] or any of its excipients);history or known hypersensitivity to mefloquine, quinine, or quinidine