In brain tissue homogenate analysis, Bhattacharjee et al. (2019) identified higher concentrations of Ac-α-syn1–6, α-syn13–21, α-syn35–43, α-syn46–58, α-syn61–80, and α-syn81–96 in the Lewy body-enriched α-synuclein fraction from the PD cingulate region compared to controls (Lamontagne-Proulx et al., 2019). This evidence concerns the gene SNCG and Parkinson disease.