CCR5 and Parkinson disease: Increased expression of CCR5 in the CNS is an inflammatory response to many neuropathological diseases, e.g., stroke (Joy et al., 2019), Parkinson’s disease (Huerta et al., 2004), multiple sclerosis (SRensen et al., 1999; Trebst et al., 2001), and Rasmussen encephalitis (Bien Christian et al., 2013; Varadkar et al., 2014).