RAB32 and Parkinson disease: To determine whether this is a common phenotype for PD-associated genes that are believed to be involved in vesicle trafficking,51 we performed electrophysiological analysis and ultrastructural observation of synaptic boutons using flies harboring LOF alleles for Rab32, Lrrk, VPS35, Aux, INPP5F, Synaptojanin (Synj), and RME-8 (Figure 6).