LRRK2 and Parkinson disease: A loss or impairment in dendritic mitochondria is a central feature of PD pathogenesis (Bose and Beal, 2016; Verma et al., 2017; Singh et al., 2019), and other studies on the particular LRRK2 G2019S variant have indicated compromised mitochondrial function (Cooper et al., 2012; Sanders et al., 2014; Hsieh et al., 2016; Schwab et al., 2017; Bose and Beal, 2019; Ludtmann et al., 2019).