MAOB and drug-induced dyskinesia: 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.