LRRK2 and Parkinson disease: Although the clinical features of the LRRK2 Gly2019Ser carriers compared with patients with idiopathic PD in literature are conflicting [meta-analysis in (25)], even for the same ethnic PD population [i.e., of North-African origin; (26–31)], our data are consistent with those of 724 LRRK2 mutation carriers listed in the MDSGene database.