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Clinical Trials/NCT06152237
NCT06152237Active, not recruitingPhase 1

A Multicenter, Open Label, Randomized, Dose-Escalation and Dose-Expansion Study of the Safety, Tolerability, and Efficacy of a Single Intrathecal Administration of TSHA-102, an AAV9-Delivered Gene Therapy, for the Treatment of Pediatric Females With Rett Syndrome

Taysha Gene Therapies, Inc.5 sites in 3 countries6 target enrollmentStarted: December 12, 2023Last updated:
Conditions
Interventions

Trial Snapshot

Phase
Phase 1
Status
Active, not recruiting
Enrollment
6
Locations
5
Primary Endpoint
Primary Safety

Study Overview

Brief Summary

The REVEAL Pediatric Study is a multi-center, Phase 1/2 open-label, dose-escalation and dose-expansion study of TSHA-102, an investigational gene therapy, in pediatric females with Rett Syndrome.

The safety, tolerability, and preliminary efficacy of two dose levels will be evaluated. The study duration is up to 6 years.

Study Design

Study Type
Interventional
Allocation
Randomized
Intervention Model
Sequential
Primary Purpose
Treatment
Masking
None

Eligibility Criteria

Ages
5 Years to 8 Years (Child)
Sex
Female
Accepts Healthy Volunteers
No

Inclusion Criteria

  • •Participant has a confirmed diagnosis of classical/typical Rett Syndrome with a documented mutation of the MECP2 gene that results in loss of function.
  • •Participant is between ≥5 to ≤8 years of age at the time of consent.
  • •Participant must be up to date with all relevant local vaccination requirements, with last vaccination dose received at least 42 days prior to the start of the immunosuppression regimen.
  • •Participant's parent/caregiver must be willing to allow participant to receive blood or blood products for the treatment of an AE if medically needed.

Exclusion Criteria

  • •Participant has another neurodevelopmental disorder independent of the MECP2 gene loss of function mutation, or any other genetic syndrome with a progressive course.
  • •Participant has a history of brain injury that causes neurological problems.
  • •Participant had grossly abnormal psychomotor development in the first 6 months of life.
  • •Participant has a diagnosis of atypical Rett syndrome.
  • •Participant has an MECP2 mutation that does not cause Rett syndrome.
  • •Participant requires non-invasive and invasive ventilatory support.
  • •Participant has contraindications for IT administration of TSHA-102 or lumbar puncture procedure, other medical conditions, or contraindications to any medications required for IT administration.
  • •Participant has acute or chronic hepatitis B or C infections.

Arms & Interventions

Cohort 2

Experimental

Dose Level 2

Intervention: TSHA-102 (Genetic)

Cohort 1

Experimental

Dose Level 1

Intervention: TSHA-102 (Genetic)

Outcomes

Primary Outcomes

Primary Safety

Time Frame: Baseline through week 52

The incidence of participants experiencing any treatment-emergent adverse events (AEs) and serious adverse events (SAEs)

Secondary Outcomes

  • Exploratory Efficacy(Baseline through week 52)

Investigators

Sponsor Class
Industry
Responsible Party
Sponsor

Study Sites (5)

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