SLC6A1 and epilepsy: In the current three largest genomic screens of individuals with epilepsy (8565, 9170 and 9769 patients, respectively), SLC6A1 was listed among the top 10–20 genes with the highest number of pathogenic variants (Lindy et al., 2018; Epi25 Collaborative, 2019, p. 25; Truty et al., 2019).