LRRK2 and Platelet storage pool disease: The leucine-rich repeat kinase 2 (LRRK2) gene is one of the best-known genetic contributors to sporadic PD (sPD).9,10LRRK2 R1628P and G2385R are the most common susceptibility variants that increase the risk of sPD in Asiatic populations.11,12 However, 2% and 4.7% of healthy individuals carry the R1628P and G2385R risk variants of LRRK2, respectively.13,14 Thus, the effects of both genetic and environmental factors must co-trigger the pathogenesis of sPD in carriers of LRRK2 risk variants.