PINK1 and Parkinson disease: Interestingly, variants unique to a specific racial or ethnic background are reported for PD (e.g., PINK1 in Asians; Nuytemans et al., 2010) as well as AD (e.g., ABCA7 frameshift deletion in African Americans; Farrer et al., 1997; Collins, 1999; Calderon et al., 2006; Reitz et al., 2013; Cukier et al., 2016; Feliciano et al., 2016), indicating a clear need to increase research in non-white populations.