We have previously shown that tau phosphorylated Thr175 (pThr175 tau) is present in many tauopathies, including CTE, ALS, ALSci and Parkinson’s disease (PD) (Strong et al., 2006; Gohar et al., 2009; Moszczynski et al., 2017, 2018). This evidence concerns the gene MAPT and Parkinson disease.