Gene Editing as a Therapeutic Approach for Rett Syndrome

Recruiting

• Conditions: Rett Syndrome

• Registration Number: NCT05740761
• Lead Sponsor: University of Siena

Brief Summary

We designed the project to validate CRISPR/Cas9-based gene editing combined with AAV-based delivery for correction of the most common MECP2 mutations both in vitro and in vivo.

Detailed Description

The project aims to validate CRISPR/Cas9-based gene editing combined with AAV-based delivery for correction of the most common MECP2 mutations both in vitro and in vivo. The laboratory of the principal investigator is an active member of the European Reference Network for rare malformation syndromes and rare intellectual and neurodevelopmental disorders (ERN-ITHACA).

Study Timeline

• Study Start: 2021-03-01
• Primary Completion: 2022-03-01
• Status Verified: 2023-01
• Study First Submitted: 2023-02-13
• Study First Submitted QC: 2023-02-13
• Last Update Submitted: 2023-02-13
• Study First Posted: 2023-02-23
• Last Update Posted: 2023-02-23
• Study Completion: 2024-03-01

Recruitment & Eligibility

• Status: RECRUITING
• Sex: Female
• Target Recruitment: 40

Inclusion Criteria

• Patients -exclusively female- since the pathology is linked to the X chromosome, with a clinical diagnosis of Rett syndrome confirmed at the genetic level by the identification, through NGS analysis, for one of the recurrent mutations (mutational hotspots) in the MECP2 gene object of the study:

  c. 473C>T - (p.(T158M)), c.502C>T (p(R168X)), c.763C>T (p.(R255X)), c.916C>T (p.(R306C));

• Age above 6 months;

• Availability of parents or legal guardians to provide free and informed consent to participate in the study

Exclusion Criteria

• NGS diagnosis with the normal outcome;
• Positive NGS diagnosis for mutation in MECP2 but with the presence of a mutation different from those under study.
• Unwillingness of parents or legal guardians to provide free and informed consent to participate in the study;

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Editing efficiency	3 years	Percentage of gene editing achieved for each mutation

Secondary Outcome Measures

Name	Time	Method
Editing specificity	3 years	Evaluation of off-targets

Trial Locations

Locations (1)

University of Siena; 🇮🇹 Siena, Italy