A Study of Soticlestat With Itraconazole and Mefenamic Acid in Healthy Adults
Condition: Healthy Volunteers
Intervention: Soticlestat; Itraconazole; Mefenamic acid
Intervention description: Soticlestat tablets.; Itraconazole oral solution.; Mefenamic acid capsule.
Intervention MeSH terms: Itraconazole; Mefenamic Acid
Phase: Phase 1
Study type: Interventional
Primary purpose: Basic Science
Allocation: Non-Randomized
Intervention model: Parallel Assignment
Masking: None (Open Label)
Enrollment: 28.0
Sex: All
Minimum age: 19 Years
Maximum age: 55 Years
Healthy volunteers: Accepts Healthy Volunteers
Keywords: Drug Therapy

Summary:

      The main aim of this study is to check how itraconazole and mefenamic acid affect the way
      soticlestat is processed by the body.

      The study will have 2 parts. Participants can only participate in one study part.

      Part 1: Participants will check into the study clinic to receive soticlestat, four days later
      they will begin receiving itraconazole and will stay in the clinic for 11 more days,
      receiving soticlestat in combination with itraconazole on one of those days. Participants
      will be contacted about 8 days after leaving the clinic for follow-up.

      Part 2: Participants will check into the study clinic to receive soticlestat, four days later
      they will begin receiving mefenamic acid and will stay in the clinic for 7 more days,
      receiving soticlestat in combination with mefenamic acid on one of those days.. Participants
      will be contacted about 9 days after leaving the clinic for follow-up.
    

Eligibility criteria:

        Inclusion Criteria:

          1. Has body mass index (BMI) greater than or equal to (>=) 18.0 and less than or equal to
             (<=) 32.0 kilogram per meter square (kg/m^2) at screening.

          2. Continuous non-smoker who has not used nicotine-containing products for at least 90
             days prior to the first dosing.

          3. Medically healthy with no clinically significant medical history, physical
             examination, laboratory profiles, vital signs or electrocardiograms (ECGs), as deemed
             by the Investigator or designee.

               -  Supine blood pressure is >=90/40 millimeter of mercury (mmHg) and <=140/90 mmHg
                  at screening;

               -  Supine pulse rate is >=45 beats per minute (bpm) and <=100 bpm at screening;

               -  QT interval corrected for pulse rate using Fridericia's formula (QTcF) is <=450
                  millisecond (msec) (males) or <=470 msec (females) and ECG findings considered
                  normal or not clinically significant by the Investigator or designee at
                  screening;

               -  Estimated creatinine clearance >=80 milliliter per minute (mL/min) at screening;

               -  Liver function tests including alanine aminotransferase (ALT) or aspartate
                  aminotransferase (AST) <=1.5*the upper limit of normal (ULN) at screening and
                  check-in.

          4. Able to swallow multiple tablets.

        Exclusion Criteria:

          1. Has history of any illness that, in the opinion of the Investigator or designee, might
             confound the results of the study or poses an additional risk to the participants by
             their participation in the study.

          2. Has history or presence of alcoholism or drug abuse within the past 2 years prior to
             the first dosing.

          3. Has history or presence of hypersensitivity or idiosyncratic reaction to the study
             drugs or related compounds.

          4. Unable to refrain from or anticipates the use of:

             • Any drug, including prescription and non-prescription medications, herbal remedies,
             or vitamin supplements within 14 days prior to the first dosing. Thyroid hormone
             replacement medication may be permitted if the participant has been on the same stable
             dose for the immediate 3 months prior to first dosing.

          5. Has history of alcohol consumption exceeding 2 standard drinks per day on average (1
             glass is approximately equivalent to the following: beer 354 milliliter (mL)/12 Ounce
             [oz], wine [118 mL/4 oz], or distilled spirits [29.5 mL/1 oz] per day).

          6. Consumes excessive amounts, defined as greater than 4 servings (1 serving is
             approximately equivalent to 120 mg of caffeine), of coffee, tea, cola, energy drinks,
             or other caffeinated beverages per day.

          7. Has been on a diet incompatible with the on-study diet, in the opinion of the
             Investigator or designee, within the 30 days prior to the first dosing and throughout
             the study.

          8. Donation of blood or significant blood loss within 56 days prior to the first dosing.

          9. Plasma donation within 7 days prior to the first dosing.

         10. Has participation in another clinical study within 30 days or 5 half-lives prior to
             the first dosing. The 30-day window or 5 half-lives will be derived from the date of
             the last blood collection or dosing, whichever is later, in the previous study to Day
             1 of Period 1 of the current study.