SNCA and Parkinson disease: Several lipid families (fatty acyls, glycerolipids, glycerophospholipids, sphingolipids, and sterols) have been so far identified as regulators of the PD aetiological processes such as SNCA aggregation, oxidative- and endoplasmic reticulum-stress, endosomal-lysosomal dysfunction, and immune response (Xicoy et al., 2019b).