Rab29 was originally highlighted in PD research as a gene located within PD risk locus PARK16 (Satake et al., 2009), and the variants at PARK16 have been suggested to function coordinately with the common variants at LRRK2 locus to increase PD risk (MacLeod et al., 2013; Pihlstrom et al., 2015). Here, LRRK2 is linked to Parkinson disease.