A Study Comparing the Pharmacokinetics and Palatability of Two Candidate Pediatric Powder-for-Oral-Suspension Formulations of Maribavir to the Current Maribavir Tablet Formulation Administered in Healthy Adult Participants
Condition: Healthy Volunteers
Intervention: Maribavir
Intervention description: Participants in both part 1 and part 2 of the study will receive maribavir tablet or suspension orally depending upon the treatment sequence allocation for a total of 7 and 10 days respectively.
Intervention MeSH terms: Maribavir
Phase: Phase 1
Study type: Interventional
Primary purpose: Treatment
Allocation: Randomized
Intervention model: Crossover Assignment
Masking: None (Open Label)
Enrollment: 20.0
Sex: All
Minimum age: 18 Years
Maximum age: 50 Years
Healthy volunteers: Accepts Healthy Volunteers

Summary:

      The Purpose of this study is to assess the relative bioavailability, dose proportionality,
      the impact of food on the rate and extent of absorption, palatability of the selected
      pediatric formulation of maribavir and the safety and tolerability of two candidate pediatric
      formulations and the adult tablet formulation of maribavir in healthy participants.
    

Eligibility criteria:

        Inclusion Criteria:

          -  An understanding, ability, and willingness to fully comply with study procedures and
             restrictions.

          -  Ability to voluntarily provide written, signed, and dated (personally or via a
             legally-authorized representative) informed consent/and assent as applicable to
             participate in the study.

          -  Age 18-50 years, inclusive at the time of consent.

          -  Male, or non-pregnant, non-breastfeeding female who agrees to comply with any
             applicable contraceptive requirements of the protocol or females of non-childbearing
             potential.

          -  Healthy as determined by the investigator on the basis of screening evaluations.

          -  Hemoglobin for males greater than or equal to (> or =)135.0 gram per liter (g/L) and
             females > or = 120.0 g/L at screening and on Day -1.

          -  Body mass index (BMI) between 18.0 and 30.0 kilogram per meter square (kg/m2)
             inclusive with a body weight greater than (>) 50 kg (110 lbs).

        Exclusion Criteria:

          -  History of any hematological, hepatic, respiratory, cardiovascular, renal,
             neurological or psychiatric disease, gallbladder removal, or current recurrent
             disease.

          -  Current or relevant history of physical or psychiatric illness, any medical disorder
             that may require treatment or make the participant unlikely to fully complete the
             study, or any condition that presents undue risk from the investigational product or
             procedures.

          -  Known or suspected intolerance or hypersensitivity to the investigational product(s),
             closely-related compounds, or any of the stated ingredients.

          -  Significant illness, as judged by the investigator, within 2 weeks of the first dose
             of investigational product.

          -  Donation of blood or blood products (e.g., plasma or platelets) within 60 days prior
             to receiving the first dose of investigational product.

          -  Within 30 days prior to the first dose of investigational product:a) Have used an
             investigational product, b) Have been enrolled in a clinical study (including vaccine
             studies) that, in the investigator's opinion, may impact this study, c) Have had any
             substantial changes in eating habits, as assessed by the investigator.

          -  Confirmed systolic blood pressure >139 millimetre of mercury (mmHg) or < 89 mmHg, and
             diastolic blood pressure > 89 mmHg or < 49 mmHg.

          -  Twelve-lead ECG demonstrating QTc > 450 millisecond (msec).

          -  Known history of alcohol or other substance abuse within the last year.

          -  Male participants who consume more than 21 units of alcohol per week or 3 units per
             day. Female participants who consume more than 14 units of alcohol per week or 2 units
             per day.

          -  A positive screen for alcohol or drugs of abuse at screening or on Day -1 of Treatment
             Period.

          -  A positive human immunodeficiency virus (HIV), HBsAg, or Hepatitis C virus (HCV)
             antibody screen.

          -  Use of tobacco in any form (e.g., smoking or chewing) or other nicotine-containing
             products in any form (e.g., gum, patch).

          -  Routine consumption of more than 2 units of caffeine per day or participants who
             experience caffeine withdrawal headaches.

          -  Prior screen failure, randomization, enrollment, participation in this study or
             participation in Part 1 of this study.

          -  Current use of any prescription medication with the exception of hormonal replacement
             therapy. (Current use is defined as use within 30 days of the first dose of
             investigational product.) Current use of any over the counter medication (including
             herbal, or homeopathic preparations) within 14 days of the first dose of
             investigational product.

          -  Current use of antacids and H2 antagonists.

          -  Ingestion of known CYP3A modulators within 7 days of Day 1, Period 1.

          -  Inability or unwillingness to consume 100 percent of high-fat meal in Part 2
             (including participants with lactose or gluten intolerance).

          -  History of oral/nasal cavity infections, gastroesophageal reflux, asthma treatment
             with albuterol, zinc supplementation.

          -  Participants with dry mouth syndrome or burning mouth syndrome or menopausal women
             suffering from dysgeusia.