GENE THERAPY COMPOSITIONS AND METHODS FOR TREATING PARKINSON'S DISEASE

A method of improving motor function and reducing dyskinesia in a subject suffering from a neurodegenerative disease or a disease where endogenous dopamine levels are reduced in the subject comprising administering an effective amount of a viral vector comprising a nucleic acid construct comprising (i) a nucleotide sequence which encodes tyrosine hydroxylase (TH), (ii) a nucleotide sequence which encodes GTP-cyclohydrolase I (CH1), (iii) a nucleotide sequence which encodes Aromatic Amino Acid Dopa Decarboxylase (AADC), or any combination thereof to the subject.