In addition, although previous studies have reported that patients carrying DDC rs921451 have a less intense motor response and patients harboring MAOB rs1799836 develop levodopa-induced dyskinesia more frequently (Devos et al., 2014; Sampaio et al., 2018), we did not find any differences in genotype distribution between patients presenting or not with motor fluctuation, dyskinesia, freezing gait, or festinating gait. The gene discussed is MAOB; the disease is Dyskinesia.