MAOB and Parkinson disease: Till now, clinically used anti-PD medications include monoamine oxidase B (MAO-B) inhibitors (selegiline, rasagiline, and safinamide), catechol-O-methyl transferase (COMT) inhibitors, dopamine precursors (levodopa and carbidopa), and dopamine agonists (pramipexole, ropinirole, rotigotine, and apomorphine) [228].