A Study of Vatiquinone for the Treatment of Participants With Friedreich Ataxia

Study Overview
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Brief Summary
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The primary objective of the study is to assess the pharmacokinetics (PK) and safety of vatiquinone administered in participants with Friedreich ataxia (FA) younger than 7 years.

Official Title
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An Open-Label Study to Evaluate Pharmacokinetics, Safety, and Efficacy of Vatiquinone in Children With Friedreich Ataxia Younger Than 7 Years of Age

Conditions
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Friedreich Ataxia

Intervention / Treatment
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* Drug: Vatiquinone


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Friedreich ataxia diagnosis (homozygous for GAA repeat expansion in intron-1 of FXN gene), confirmed by clinical genetic testing. Must be able to abstain from anticoagulants and any aspirin (including 81 mg) for 30 days before the Baseline Visit and for the duration of the study; any possible discontinuation of anticoagulants should be monitored and indicated by a specialist (for example, cardiologist, neurologist, or hematologist), and discontinuation will be noted by the prescribing physician. Must be able to abstain from strong cytochrome P450 (CYP) 3A4 inducers/inhibitors (for example, ketoconazole, rifampin, St. John's wort, grapefruit juice, or any grapefruit product) for at least 30 days prior to enrollment and for the duration of the study. Must be able to take vatiquinone oral solution with food. Exclusion Criteria: Previous treatment with vatiquinone. Allergy to vatiquinone or sesame oil. Ejection fraction <50%. Participation in any other interventional clinical trial or receipt of any study drug in any other clinical trial within 60 days prior to the Baseline Visit. Participants may be rescreened after the exclusionary period of 60 days has passed. Concomitant use of interventional CoQ10, vitamin E, or any approved or non-approved medication for FA within 30 days prior to the Baseline Visit. These prohibited medications can be discontinued at the Screening Visit. Note: Other inclusion and exclusion criteria may apply.

Ages Eligible for Study
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Maximum Age: 6 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Vatiquinone<br>Participants will receive an oral solution (100 milligrams [mg]/milliliter [mL]) of vatiquinone (15 mg/kilogram [kg] if body weight <13 kg and 200 mg if body weight ≥13 kg) 3 times a day (TID) for 72 weeks. | Drug: Vatiquinone<br>* Vatiquinone will be administered per dose and schedule specified in the arm.<br>* Other names: EPI-743;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Plasma Concentration of Vatiquinone |  | Pre-morning dose (0 hour) at Week 4; 1 to 3 hours and 3 to 6 hours post-morning dose at Weeks 4, 12, and 24 | 
| Area Under the Curve (AUC) of Vatiquinone |  | Pre-morning dose (0 hour) at Week 4; 1 to 3 hours and 3 to 6 hours post-morning dose at Weeks 4, 12, and 24 | 
| Number of Participants With Adverse Events |  | Baseline up to Week 76 |