LRRK2 and Parkinson disease: Several autosomal dominant and autosomal recessive genes have been identified, with SNCA (Synuclein Alpha), LRRK2 (Leucine-Rich Repeat Kinase 2), PRKN (Parkin RBR E3 Ubiquitin Protein Ligase), PINK1 (PTEN-induced kinase 1), and GBA1 (glucosylceramidase beta 1) being the most commonly linked genes associated with PD pathology [12].