PTPRF and attention deficit-hyperactivity disorder: A subsequent study utilizing significantly larger datasets from ADHD and EA genome-wide association studies (GWASs), along with additional intelligence data, expanded these findings by identifying 30 loci shared between ADHD, EA, and/or intelligence, including genes such as CALN1, FOXP1, FOXP2, PTPRF, and SORCS3 (30).