Gene Therapy for Cardiomyopathy Associated With Friedreich's Ataxia

NCT ID: NCT05445323

Last Updated: 2025-12-23

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

ACTIVE_NOT_RECRUITING

Clinical Phase

PHASE1/PHASE2

Total Enrollment

8 participants

Study Classification

INTERVENTIONAL

Study Start Date

2022-08-24

Study Completion Date

2029-09-30

Brief Summary

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This is a Phase 1/2, open-label, dose-ascending, multicenter study of the safety and efficacy of LX2006 for participants who have Friedreich's Ataxia with evidence of cardiomyopathy. The study will evaluate up to three doses of single administration of LX2006 (AAVrh.10hFXN), an adeno-associated virus (AAV) gene therapy designed to intravenously deliver the human frataxin (hFXN) gene to cardiac cells over a 52-week period. Long-term safety and efficacy will be evaluated for an additional 4-years for a total of 5-years post LX2006 treatment.

Detailed Description

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Friedreich's ataxia (FA) is a rare, autosomal recessive disease caused by a mutation in the autosomal frataxin (FXN) gene. Progressive cardiomyopathy with cardiac hypertrophy and fibrosis is observed in most individuals with FA. The disease is more severe in those with earlier onset. Presently, there is no therapy that alters the progression of cardiomyopathy in FA, which is responsible for 59% of FA-related deaths.

The primary objective of this dose escalation study is to assess the safety and tolerability of three ascending doses of LX2006 in patients with FA-associated cardiomyopathy. LX2006 is designed to restore hFXN levels in order to improve mitochondrial function. Assessments of cardiac function, biomarkers and other preliminary efficacy endpoints are also included in this study.

Conditions

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Friedreich Ataxia Cardiomyopathy, Secondary

Keywords

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Friedreich's Ataxia Cardiomyopathy FA Gene therapy FXN Gene Frataxin Gene LX2006

Study Design

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Allocation Method

NA

Intervention Model

SEQUENTIAL

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Cohort 1/ Cohort 2/ Cohort 3

Group Type EXPERIMENTAL

Low dose LX2006

Intervention Type GENETIC

Adeno-associated viral vector encoding the FXN gene (AAVrh.10hFXN)

Mid Dose LX2006

Intervention Type GENETIC

Adeno-associated viral vector encoding the FXN gene (AAVrh.10hFXN)

High Dose LX2006

Intervention Type GENETIC

Adeno-associated viral vector encoding the FXN gene (AAVrh.10hFXN)

Interventions

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Low dose LX2006

Adeno-associated viral vector encoding the FXN gene (AAVrh.10hFXN)

Intervention Type GENETIC

Mid Dose LX2006

Adeno-associated viral vector encoding the FXN gene (AAVrh.10hFXN)

Intervention Type GENETIC

High Dose LX2006

Adeno-associated viral vector encoding the FXN gene (AAVrh.10hFXN)

Intervention Type GENETIC

Eligibility Criteria

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Inclusion Criteria

* Confirmed genetic diagnosis of FA, with onset being before 25 years of age
* Protocol specified ranges for antibodies
* Protocol specified measures of FA cardiomyopathy

Exclusion Criteria

* Protocol specified ranges for left ventricular ejection fraction (LVEF) as measured by cardiac ECHO
* Uncontrolled diabetes
* Abnormal liver function
* Active infection of any type, including hepatitis virus (A, B or C) or human immunodeficiency virus (HIV-1 and HIV-2)
* Contraindication to cardiac MRI
* Contraindications to cardiac biopsies
* Participants who are receiving systemic corticosteroids or other immunosuppressive medications
* History of significant coronary artery disease or any structural heart or vascular disease other than FA cardiomyopathy
* Presence of clinically significant, hemodynamically unstable arrhythmias, requiring physician intervention
* Presence of clinically significant abnormalities as determined by the investigator, other than ECG abnormalities related to FA
* Uncontrolled psychiatric disease
Minimum Eligible Age

18 Years

Maximum Eligible Age

50 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Lexeo Therapeutics

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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LEXEO Clinical Trials

Role: STUDY_DIRECTOR

Lexeo Therapeutics

Locations

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Ataxia Center and HD Center of Excellence, University of California

Los Angeles, California, United States

Site Status

University of South Florida

Tampa, Florida, United States

Site Status

Mayo Clinic

Rochester, Minnesota, United States

Site Status

Countries

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Canada United States

Other Identifiers

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LX2006-01

Identifier Type: -

Identifier Source: org_study_id