PIGL and Parkinson disease: Recently, more multi‐ancestry studies have been conducted in PD, nominating novel loci for disease risk and age at onset including ITGA8, SV2C, and WBSCR1720, 26, 27 The largest meta‐GWAS for PD, which included four ancestral populations, replicated 66 loci previously nominated in European studies as well as identified 12 novel loci: MTF2, PIK3CA, ADD1, SYBU, IRS2, USP8, PIGL, FASN, MYLK2, USP25, EP300, and PPP6R2.7