FMR1 and Parkinson disease: Genetic analysis of the FMR1 gene, suggested as one of the potential causes of parkinsonism, revealed a normal 27 CGG repeats in the 5’ UTR region; however, a missense mutation at the coding region (NM_002024.6: c.1877C>T, p.P626L) was identified in both the patient and his mother (Fig. 1C and D).