Safety and Efficacy of Autologous iNSC-DAP in the Treatment of Parkinson's Disease

Parkinson's Disease (PD) is the second most common neurodegenerative disease, caused by progressive depletion of midbrain dopaminergic neurons in the substantia nigra pars compacta. This clinical study will include the preparation of dopaminergic neural precursor cells derived from neural stem cells through reprogramming of patient's peripheral blood mononuclear cells (PBMCs), and transplantation of the obtained cells into the brains of PD patients by stereotaxic injection. Safety, tolerability, evidence of cell survival (using PET scan), and the efficacy on PD symptoms will be assessed at different time points up to 12 months post-transplantation.

Inclusion criteria

Ages between 30 and 85 years, males or females; Diagnosed to be Parkinson's disease patients according to MDS Parkinson's disease diagnostic criteria; Disease history over 3 years; Hoehn and Yahr Stage less than or equal to 4 during the medication "on" time; Responsive to levodopa treatment (Maximum rate of improvement in MDS-UPDRS, part 3, is over 30%).

Exclusion criteria

Atypical Parkinsonian syndrome or secondary Parkinsonian syndrome; Accompanied with other central nervous system diseases; With other severe systemic diseases or dysfunction; With severe psychiatric disorders; Subjects are using hormone or cytotoxic drugs and cannot stop taking the drug during the trial; With cognitive disorders (MMSE<24); With severe dyskinesia (MDS-UPDRS part 4, score in 4.1/4.2 ≥ 2); Subjects have undergone previous brain surgery; Subjects are long-term user of anticoagulant; Subjects have intracranial lesions which may affect the surgery or follow-up studies as assessed by imaging; Subjects are unable to undergo MRI or AV133 PET examination; Pregnancy or in preparation for pregnancy; Not suitable to participate in this clinical trial as assessed by the study investigators/physicians.