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RecruitingNCT07180355FALCONUpdated Nov 6, 2026

A Study of SGT-212 Gene Therapy in Friedreich's Ataxia

A Phase 1 interventional study of SGT-212 in Friedreich's Ataxia (FA), sponsored by Solid Biosciences Inc.. Recruiting at 3 sites in United States. Open to participants aged 18 Years to 40 Years. Per ClinicalTrials.gov, last updated 2026-11-06.

Sponsored by Solid Biosciences Inc. · Phase 1, Interventional, and Treatment

From the registry’s dates

  • Started Oct 2025; still recruiting 1 year later.
Phase
Phase 1
Study type
Interventional
Enrollment
10
Allocation
Non-randomized
Ages
18 Years to 40 Years
Sex
All
01

Study summary

This is a phase 1b, first in-human, open-label, dose-finding study investigating the safety and tolerability of SGT-212 in participants with Friedreich's ataxia (FA). It will be delivered via dual intradentate nucleus (IDN) and intravenous (IV) administration to participants with FA.

All participants will receive SGT-212 and will be enrolled in the study for approximately 5 years.

02

Conditions studied

  • Friedreich's Ataxia (FA)

Keywords

  • SGT-212
  • Gene Therapy
  • Frataxin
  • Repeat Expansion
  • Neuromuscular
  • Cardiac
  • Ataxia
  • Movement Disorder
  • Rare disease
  • AAV
  • AAVhu68
03

In context

Friedreich Ataxia

110 studies on the registry are indexed under Friedreich Ataxia; 27 are open to participants now.

This study's planned enrollment of 10 is below the median of 30 across 75 interventional studies indexed under Friedreich Ataxia.

Browse Friedreich Ataxia studies →

Lead sponsor

Solid Biosciences Inc. is the lead sponsor of 6 studies on the registry; 4 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 40 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Has history of FA symptom onset ≤25 years of age
  • Has a clinical and genetic diagnosis of FA
  • Has a staging score of ≥1 but \<6 on the Friedreich's Ataxia Rating Scale (FARS) Functional Disability Staging Score
  • Is willing to agree to the following rules for use of omaveloxolone (Skyclarys):

    1. For a candidate who is currently taking omaveloxolone, has been on a stable dose for 12 weeks, expects to continue taking omaveloxolone at that dose throughout the study, and is willing to stop taking omaveloxolone at the direction of the Investigator or Sponsor's Medical Monitor if evidence of transaminitis or synthetic liver dysfunction is detected during the study
    2. For a candidate who is not actively taking omaveloxolone, at least 12 weeks have passed since the last dose and the candidate agrees not to resume omaveloxolone during the 18-month period after SGT-212 infusion NOTE: The use of any other approved or medicinal product for the treatment of FA should be discussed with the study team.

Exclusion criteria

Exclusion Criteria:

  • Antibodies against adeno-associated virus serotype 9 (AAV9)
  • Has a modified FARS (mFARS) score \<20
  • Has a body weight ≤25 kilogram (kg) or has (BMI) ≥33 kg/m\^2
  • Has a to endomyocardial (EMB) or cardiac catheterization
  • Is unable to undergo cardiac and brain MRI with contrast, including to gadolinium contrast agent, presence of a non-MRI-compatible cardiac pacemaker, presence of a non-MRI-compatible implantable cardiac defibrillator, or physical condition (e.g., contractures)
  • Has uncontrolled diabetes as defined by a (Hb) A1c >9%
  • Has participated in recent interventional clinical studies or received any therapy administered within 3 months or 5 half-lives (whichever is longer) prior to Screening
  • Has received gene therapy at any time
  • Has contraindications to receiving
  • Has any contraindication to the surgical procedures involved with IDN infusion of SGT-212
  • Has any known cardiac disease not related to FA including known obstructive coronary artery disease (CAD)
  • Other Inclusion/Exclusion criteria to be applied as per protocol.
Terms in these criteria, in plain language(7)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

BMI (body mass index)

Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.

What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.

Contraindication

A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.

Biopsy and archival tissue

A biopsy takes a small piece of tissue to examine. “Archival tissue” is a sample already taken, for example at diagnosis, and kept by the hospital.

Whether a stored sample will do depends on when it was taken, how much there is and what the study needs. Ask whether the study accepts your stored sample or needs a new biopsy.

Hypersensitivity

An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.

Hemoglobin (Hb)

The protein in red blood cells that carries oxygen. A low level is anaemia, which can cause tiredness and breathlessness. Measured in g/dL or g/L (9 g/dL is 90 g/L).

Corticosteroids (steroids)

Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.

Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.

05

Study design

Phase
Phase 1
Primary purpose
Treatment
Allocation
Non-randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
10 participants (estimated)

Study arms

  • Experimental
    Cohort 1 (Non-Ambulatory)

    Non-ambulatory participants will receive bilateral intradentate infusion (IDN) followed by systemic intravenous (IV) infusion.

    Drug: SGT-212

  • Experimental
    Cohort 2 (Ambulatory)

    Ambulatory participants will receive bilateral IDN infusion followed by systemic IV infusion.

    Drug: SGT-212

  • Experimental
    Cohort 3 (Ambulatory and Non-Ambulatory)

    Participants will receive bilateral IDN followed by systemic IV infusion.

    Drug: SGT-212

Interventions

  • DrugSGT-212

    Adeno-associated virus serotype AAVhu68 containing a codon-optimized complementary DNA (cDNA)

06

What researchers measure

Primary outcomes

  1. Incidence and Severity of Treatment Emergent Adverse Events (TEAEs)

    Time frame: Month 12

Secondary outcomes

  1. Incidence and Severity of TEAEs

    Time frame: Months 18 and 60

  2. Incidence and Severity of Treatment-emergent Serious adverse events (SAEs)

    Time frame: Months 18 and 60

  3. Number of Treatment-emergent deaths

    Time frame: Months 18 and 60

  4. Change from Baseline in Columbia-Suicide Severity Rating Scale (C-SSRS)

    Time frame: Baseline, Months 18 and 60

  5. Number of Participants with Change from Baseline in Significant Abnormalities in Laboratory Tests

    Time frame: Baseline, Months 18 and 60

  6. Number of Participants with Change from Baseline in Significant Abnormalities in Vital Signs

    Time frame: Baseline, Months 18 and 60

  7. Number of Participants with Change from Baseline in Significant Abnormalities in Physical Examination Findings

    Time frame: Baseline, Months 18 and 60

  8. Number of Participants with Change from Baseline in Innate and Adaptive Immune Responses

    Time frame: Baseline, Months 18 and 60

  9. Change from Baseline in Blood Biomarkers Including Inflammatory Markers

    Time frame: Baseline, Month 12

07

Study locations

3 of 3 sites recruiting
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

2 registry updates since Sep 25, 2026
Site contacts
Changed at 1 site. See the sites
Show the site
  • The University of California, Los Angeles (UCLA) · Los Angeles, United StatesContact person changed (no phone or email listed)
Nov 6, 2026
Show all 2 updates
  1. Nov 6, 2026
    Site contacts Changed at 1 site. See the sites
    Show the site
    • The University of California, Los Angeles (UCLA) · Los Angeles, United StatesContact person changed (no phone or email listed)
    + 1 other change: verification date
  2. Sep 29, 2026
    Minor edits only
    + 1 other change: verification date

From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗

10

Registry details

Key details

Study ID
NCT07180355
Lead sponsor
Solid Biosciences Inc.
Responsible party
Sponsor
First posted
Sep 18, 2025
Start date
Oct 22, 2025
Primary completion
Mar 21, 2028 (estimated)
Completion
Feb 29, 2032 (estimated)
Last update
Nov 6, 2026

Study contacts

Solid Biosciences Clinical Trials
Contact
clinicaltrials@solidbio.com
+1617-337-4680

Oversight

Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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