The synuclein alpha gene (SNCA) encodes for α‐synuclein (α‐syn), the small protein mainly known for its implications in PD (Houlden & Singleton, 2012) and principal component of the Lewy Bodies aggregates (Spillantini et al., 1997), the second fundamental hallmark of PD (Poewe et al., 2017). Here, SNCA is linked to Parkinson disease.