A Double-Blind, Placebo-Controlled, Dose Exploration Study of CTI-1601 in Adult Subjects With Friedreich's Ataxia

Exclusion Criteria

• •1. If the subject previously participated in a study of CTI-1601 (CLIN-1601-101 (NCT04176991) or CLIN-1601-102 (NCT04519567)) the subject may not enroll in this study if they experienced one or more of the following: (a) Serious Adverse Event (SAE) related to study drug; (b) Adverse Event (AE) defined as Grade 3 or higher according to the CTCAE version 5.0 (or higher), related to study drug; (c) some other event that supports the exclusion of the subject from participating in this study as determined by the Sponsor (i.e., an AE considered clinically significant by the Sponsor regardless of whether it met SAE criteria and regardless of CTCAE grade).
• •2. Subject who is confirmed as compound heterozygous (GAA repeat expansion on only one allele) for FRDA.
• •3. Subject used an investigational drug or device within 90 days prior to screening.
• •4. Subject requires use of amiodarone.
• •5. Subject used erythropoietin, etravirine, or gamma interferon 90 days prior to Screening.
• •6. Subject use of biotin supplementation that exceeds 30.0 mcg/day, either as part of a multivitamin or as a standalone supplement, within 7 days prior to the first dose of study drug.
• •7. Subject uses more than 3.0 grams of acetaminophen daily.
• •8. Subject receives medication that requires SC injection in the abdomen or thigh.
• •9. Subject received a vaccination within 14 days of administration of the first dose of study drug or is scheduled to receive a vaccination within 14 days after administration of the last dose of study drug. As an exception, influenza and tetanus vaccines must be administered more than 72 hours prior to the first dose of study drug or 72 hours after the administration of the last dose of study drug.
• •10. Subject has a screening ECHO LVEF \< 45%.
• •11. Male subject has a QTcF \> 450 milliseconds or female subject has a QTcF \> 470 milliseconds on an ECG.
• •12. Subject currently receiving or having received omaveloxolone within 30 days prior to Screening.