A Double-Blind, Placebo-Controlled, Dose Exploration Study of CTI-1601 in Adult Subjects With Friedreich's Ataxia
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ClinicalTrials.gov Identifier: NCT05579691 |
Recruitment Status :
Recruiting
First Posted : October 14, 2022
Last Update Posted : October 14, 2022
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Condition or disease | Intervention/treatment | Phase |
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Friedreich Ataxia | Biological: CTI-1601 Other: Placebo | Phase 2 |
This is a double-blind, placebo-controlled, study evaluating a 25 mg dose of CTI-1601.
This study will consist of 1 cohort with 12 to 15 subjects participating in the cohort. Subjects will be dosed once daily (QD) for 14 days followed by dosing every other day (QOD) through Day 28.
Study Type : | Interventional (Clinical Trial) |
Estimated Enrollment : | 15 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Masking: | Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor) |
Primary Purpose: | Treatment |
Official Title: | A Phase 2, Randomized, Double-Blind, Placebo-Controlled, Dose Exploration Study to Assess the Safety, Pharmacokinetics, and Pharmacodynamics of Subcutaneous CTI-1601 in Adult Subjects With Friedreich's Ataxia |
Actual Study Start Date : | September 21, 2022 |
Estimated Primary Completion Date : | December 31, 2023 |
Estimated Study Completion Date : | December 31, 2023 |

Arm | Intervention/treatment |
---|---|
Experimental: CTI-160l
CTI-1601 is a recombinant fusion protein and is intended to deliver human frataxin, the protein deficient in Friedreich's ataxia
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Biological: CTI-1601
CTI-1601 is a recombinant fusion protein and is intended to deliver human frataxin, the protein deficient in Friedreich's ataxia |
Placebo Comparator: Placebo
Placebo Comparator
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Other: Placebo
Placebo Comparator |
- Number of Participants with Treatment Emergent Adverse Events [ Time Frame: Through study completion, an average of 86 days ]Overall summary of Participants with Treatment Emergent Adverse Events
- Maximum observed plasma concentration (Cmax) of CTI-1601 after multiple doses [ Time Frame: At baseline and up to 29 days ]Summary assessment of changes in the maximum observed plasma concentration (Cmax) of CTI-1601 after multiple doses
- Area under the concentration time curve (AUC) of CTI-1601 from time 0 through the last measurable time point [ Time Frame: At baseline and up to 29 days ]Summary assessment of changes in the AUC of CTI-1601 from time 0 to the last measurable time point and during the dosing interval
- Time to maximum observed plasma concentration (tmax) of CTI-1601 after multiple doses [ Time Frame: At baseline and up to 29 days ]Summary assessment of the time to maximum observed plasma concentration (tmax) of CTI-1601 after multiple doses
- Time to last observed plasma concentration (tlast) of CTI-1601 after multiple doses [ Time Frame: At baseline and up to 29 days ]Summary assessment of the time to last observed plasma concentration (tlast) of CTI-1601 after multiple doses
- Changes from baseline in frataxin levels in buccal cells [ Time Frame: At baseline and up to 58 days ]Summary assessment of changes in frataxin levels in buccal cells
- Changes from baseline in frataxin levels in skin punch cells [ Time Frame: At baseline and up to 29 days ]Summary assessment of changes in frataxin levels in skin punch cells

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Ages Eligible for Study: | 18 Years and older (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- Subject has a genetically confirmed diagnosis of FRDA manifested by homozygous GAA repeat expansions, with repeat sizing (if available) included on the diagnosis report.
- Subject is biologically male or female, 18 years of age or older at screening.
- Subject must have a mFARS score ≥ 20 and be able to traverse a distance of 25 feet with or without some assistive device (e.g., cane, walker, crutches, self-propelled wheelchair), and (a) be able to sit upright with thighs together and arms crossed without requiring support on more than two sides; (b) be able to transfer from bed to chair independently or with assistance if, in the opinion of the PI, the degree of physical disability does not result in undue risk to the subject while participating in the study; and (c) perform basic daily care, such as feeding themselves and personal hygiene, with minimal assistance.
- Subject must weigh > 40.0 kg.
Exclusion Criteria:
Subjects are excluded from the study if any of the following exclusion criteria are met:
- 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).
- Subject who is confirmed as compound heterozygous (GAA repeat expansion on only one allele) for FRDA.
- Subject used an investigational drug or device within 90 days prior to screening.
- Subject requires use of amiodarone.
- Subject used erythropoietin, etravirine, or gamma interferon 90 days prior to Screening.
- 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.
- Subject uses more than 3.0 grams of acetaminophen daily.
- Subject receives medication that requires SC injection in the abdomen or thigh.
- 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.
- Subject has a screening ECHO LVEF < 45%.
- Male subject has a QTcF > 450 milliseconds or female subject has a QTcF > 470 milliseconds on an ECG.

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT05579691
Contact: Amber Farwig | 212-994-4567 ext 66407 | afarwig@clinilabs.com |
United States, New Jersey | |
Clinilabs Drug Development Corporation | Recruiting |
Eatontown, New Jersey, United States, 07724 | |
Contact: Amber Farwig 212-994-4567 ext 66407 afarwig@clinilabs.com |
Principal Investigator: | Magdy Shenouda, M.D. | Clinilabs, Inc. |
Responsible Party: | Larimar Therapeutics, Inc. |
ClinicalTrials.gov Identifier: | NCT05579691 |
Other Study ID Numbers: |
CLIN-1601-200 |
First Posted: | October 14, 2022 Key Record Dates |
Last Update Posted: | October 14, 2022 |
Last Verified: | October 2022 |
Studies a U.S. FDA-regulated Drug Product: | Yes |
Studies a U.S. FDA-regulated Device Product: | No |
Ataxia Cerebellar Ataxia Friedreich Ataxia Dyskinesias Neurologic Manifestations Nervous System Diseases Cerebellar Diseases Brain Diseases |
Central Nervous System Diseases Spinocerebellar Degenerations Spinal Cord Diseases Heredodegenerative Disorders, Nervous System Neurodegenerative Diseases Genetic Diseases, Inborn Mitochondrial Diseases Metabolic Diseases |