Gene Therapy With Modified Autologous Hematopoietic Stem Cells for Patients With Mucopolysaccharidosis Type IIIA

Mucopolysaccharidosis Type IIIA Clinical Trial

Official title: A Phase I-II, Study of Autologous CD34+ Haematopoietic Stem Cells Transduced ex Vivo With CD11b Lentiviral Vector Encoding for Human SGSH in Patients With Mucopolysaccharidosis Type IIIA (MPS IIIa, Sanfilippo Syndrome Type A)

Status Active, not recruiting

Clinical Trial Summary

Patients with MPS IIIA have a clinical disorder marked by severe and progressive brain disease and neurological symptoms due to the accumulation of undigested glycosaminoglycans in all cells of the body. This study will be the first in human clinical trial to explore the safety, tolerability and clinical efficacy of ex vivo gene therapy (autologous CD34+ cells transduced with a lentiviral vector containing the human SGSH gene) in MPSIIIA patients. Following treatment with the gene therapy patients will be followed up for a minimum of 3 years.

Clinical Trial Description

MPS IIIA is caused by a deficiency of the heparan-N-sulfatase (SGSH) enzyme, leading to the accumulation of the glycosaminoglycan heparan sulphate in the lysosomes. Untreated patients of MPS IIIA experience rapid and progressive neurologic deterioration. To date, there is no effective disease-modifying treatment for patients suffering from MPS IIIA. This study aims to recruit 3 to 5 patients with MPS IIIA who satisfy the inclusion and exclusion criteria and provide full consent, between 3 months and 24 months of age. The investigational medicinal product (IMP) will be a cell-based gene therapy that uses genetically modified autologous CD34+ haematopoietic stem cells transduced with a lentiviral vector containing the human SGSH gene. Patients will be followed up for a minimum of 3 years after gene therapy. ;

Related Conditions & MeSH terms

• Mucopolysaccharidoses
• Mucopolysaccharidosis III
• Mucopolysaccharidosis Type IIIA

• NCT number: NCT04201405
• Study type: Interventional
• Source: University of Manchester
• Status: Active, not recruiting
• Phase: Phase 1/Phase 2
• Start date: January 7, 2020
• Completion date: October 30, 2024