GIGYF2 and Parkinson disease: The Grb10-Interacting GYF Protein 2 (GIGYF2) gene is located on human chromosome 2q37, a region linked to familial Parkinson’s disease, and an intimate association between GIGYF2 mutations and Parkinson’s disease has been revealed (Ruiz-Martinez et al. 2015; Sutherland et al. 2009).