P4HB and Parkinson disease: Furthermore, βPix interacts with several risk factors for neurological disorders, including Shank (ASD and schizophrenia risk; Park et al. 2003; Zhou et al. 2016), Git (ADHD; Bagrodia et al. 1998; Won et al. 2011), and LRRK2 (Parkinson’s disease; Zimprich et al. 2004; Haebig et al. 2010).