To describe the molecular, electrophysiological and morphological expression profile of dopaminergic neurons derived from fibroblasts of patients with Parkinson's disease.

Inclusion Criteria:

1. Subjects aged 18 years or older
2. Patients with Parkinson's disease, according to the most recent diagnostic criteria
3. Evidence of a personally signed and dated informed consent document indicating that the subject has been informed of all pertinent aspects of the study

Exclusion Criteria:

1. Patients affected by drug-induced parkinsonism or atypical parkinsonian disorders
2. Patients with neurological diseases other than Parkinson's disease
3. Inability to sign an informed consent
4. Severe psychiatric diseases