Study to Evaluate Properties of Radiprodil Given in Oral Solution to Healthy Volunteers

A Single Oral Dose Study of the Safety, Tolerability, and Pharmacokinetic Profile of Radiprodil in Adult Healthy Volunteers

To evaluate the pharmacokinetics (PK) profile of Radiprodil in suspension form in healthy adult subjects.

UP0027 is a Phase 1, single-center, open-label study to investigate the safety, tolerability, and PK profile of radiprodil in healthy adult male and female subjects after a single fasting oral dose of radiprodil 30 mg suspension formulation. A total of 10 subjects will be enrolled in the study.

The primary objective of the study is to evaluate the PK profile of oral radiprodil in suspension form in healthy adult subjects.

The secondary objective of the study is to evaluate the safety and tolerability of oral radiprodil in suspension form in healthy adult subjects.

The exploratory objectives of the study are to evaluate the comparative PK profile of radiprodil from samples collected using 2 alternative microsampling techniques (MITRA™ and Drummond capillary tubes) with that of conventional venous blood samples, and to test the perception of the taste and texture of the oral radiprodil suspension.

Inclusion Criteria:

• Subject is male or female, ≥ 18 years to ≤ 45 years of age
• Subject smokes < 10 cigarettes per day and has a score of < 4 on the Fagerström Test for Nicotine Dependence (Heatherthon et al., 1991). The Fagerström Test is not required for nonsmokers (ie, no smoking for at least 6 months)
• Subject has a body mass index (BMI) of 18 to 30 kg/m² (inclusive), with a body weight of at least 50 kg (male) or 45 kg (female)
• Subject has a blood pressure and pulse rate within the normal range in supine position after 5 minutes rest (systolic blood pressure: 90 mmHg to 140 mm Hg, diastolic blood pressure: 45 mmHg to 90 mmHg, pulse rate: 45 bpm to 90 bpm)

Exclusion Criteria:

• Subject has a known hypersensitivity to any components of Radiprodil liquid formulation including the excipients or a history of drug or other allergy that, in the opinion of the Investigator or UCB Study Physician, contraindicates his/her participation

• Subject has received prescription or nonprescription medicines (including over-the-counter medicines and herbal and dietary supplements [including St John's Wort]) within 14 days. Exceptions:

  • Paracetamol for the treatment of mild symptoms (eg, headache or other pain), given at most every 6 h to 8 h, not exceeding 2 g/day, and with a total of no more than 5 g over 7 days
  • Inhaled corticosteroids for seasonal rhinitis
  • Vitamins within recommended daily dose Limits

• Subject has consumed any grapefruit, grapefruit juice, grapefruit-containing products, or star fruit within 14 days prior to administration of Radiprodil

• Subject has a history of unexplained syncope or a family history of sudden death due to long QT syndrome