Safety Study of AADC Gene Therapy (VY-AADC01) for Parkinson's Disease — AADC  

Parkinson's Disease Clinical Trial

Official title: An Open-label Safety and Efficacy Study of VY-AADC01 Administered by MRI-Guided Convective Infusion Into the Putamen of Subjects With Parkinson's Disease With Fluctuating Responses to Levodopa

Status Completed

Clinical Trial Summary

Safety study of AADC gene transfer (VY-AADC01) in subjects with Parkinson's disease.

Clinical Trial Description

Parkinson's disease is a neurodegenerative disorder involving loss of neurons that release dopamine in the striatum. To compensate for the loss of dopamine, patients are typically prescribed levodopa medication which is converted to dopamine by the enzyme Aromatic L-Amino Acid Decarboxylase (AADC). As Parkinson's disease progresses, levodopa therapy becomes less effective and is associated with motor fluctuations, involuntary movements and other complications.

This study will primarily investigate the safety of increasing AADC levels in the striatum via AADC gene delivery. The hAADC gene is packaged into a gene transfer vector derived from a common, non-pathogenic virus (AAV2) to which >90% of humans have been exposed. This investigational drug, termed VY-AADC01, will be injected directly into the striatum during a neurosurgical procedure that is performed with real-time MRI imaging to monitor delivery.

Subjects will continue to take Parkinson's disease medications, including levodopa.

The safety and potential clinical responses to VY-AADC01 will be assessed by repeated clinical evaluations of Parkinson's disease, cognitive tests, laboratory blood tests and neuroimaging. Clinical evaluations will be performed over a 3 year follow-up period. A test to specifically assess the clinical response to levodopa will be performed once before AADC gene delivery and approximately 6 months after. ;

Related Conditions & MeSH terms

• Parkinson Disease
• Parkinson's Disease

• NCT number: NCT01973543
• Study type: Interventional
• Source: Neurocrine Biosciences
• Status: Completed
• Phase: Phase 1
• Start date: October 2013
• Completion date: January 24, 2020