Study of N-acetyl-L-leucine for CACNA1A Disorders

This study is testing N-acetyl-L-leucine (a modified amino acid) in people aged 4 and older with a genetically confirmed CACNA1A disorder, which includes conditions like Spinocerebellar Ataxia Type 6, Episodic Ataxia Type 2, and Familial Hemiplegic Migraine-1. The goal is to see if N-acetyl-L-leucine is safe and effective compared to a placebo (an inactive substance). Researchers will measure changes in ataxia (problems with coordination and balance) using a special scale over 24 weeks. This study is currently unclear regarding its recruitment status, but plans to enroll 60 participants.

Study design
This is a randomized, double-blind, placebo-controlled study where participants will receive N-acetyl-L-leucine and a placebo at different times. It is a multinational, cross-over Phase III study.
What's involved
You will participate in a baseline period of about 2 weeks, followed by two 12-week treatment periods where you will receive either N-acetyl-L-leucine or placebo. You will be assessed twice during each study period.
Compensation
Not stated in the trial record.
Follow-up
After the main study, participants may be offered the chance to join an Extension Phase to continue receiving N-acetyl-L-leucine.

AI-generated from the public study record. Only the study team can confirm whether you're eligible — confirm details with them before making decisions.

NCT07221292

Pivotal Study of N-acetyl-L-leucine for CACNA1A

Recruiting
PHASE3Ages 4+InterventionalTreatment
IntraBio Inc
~60 participants
Updated 2026-09-08 on ClinicalTrials.gov
What's tested:N-Acetyl-L-LeucinePlacebo

At a glance

Recruiting sites
11 of 11 listed sites are recruiting right now
RecruitingSuspended, closed, or not yet open
What they're measuring
Scale for the Assessment and Rating of Ataxia
Measured over End of Period I (week 12) vs. End of Period 2 (week 24)
CACNA1A
Spinocerebellar Ataxia Type 6
Episodic Ataxia Type 2
Familial Hemiplegic Migraine-1

NCT07221292

Where you'd take part

This study runs at 11 sites. They're the same protocol — you choose where, and that choice sets who your contact draft is addressed to.

  • Bambino Gesu' Children's Research Hospital

    Rome, Italystudy coordinator listed

    Recruiting

  • Johns Hopkins University

    Baltimore, Marylandstudy coordinator listed

    Recruiting

  • Massachusetts General Hospital

    Boston, Massachusettsstudy coordinator listed

    Recruiting

  • Medical University of Innsbruck

    Innsbruck, Austriastudy coordinator listed

    Recruiting

  • The Newcastle upon Tyne Hospitals NHS Foundation Trust

    Newcastle upon Tyne, United Kingdomstudy coordinator listed

    Recruiting

  • The University of Texas Health (UT Health)

    Houston, Texasstudy coordinator listed

    Recruiting

  • University Hospital Bern Inselspital

    Bern, Switzerlandstudy coordinator listed

    Recruiting

  • University of Athens

    Athens, Greecestudy coordinator listed

    Recruiting

Sites open and close at different times, so the status above is per site — it can differ from the study's overall status.

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  • Scale for the Assessment and Rating of AtaxiaEnd of Period I (week 12) vs. End of Period 2 (week 24)

    The Scale for Assessment and Rating of Ataxia has 8 items that are related to gait, stance, sitting, speech, finger-chase test, nose-finger test, fast alternating movements, and heel-shin test. The range is 0-40 points, with a lower score representing neurological improvement and a higher score representing neurological worsening.