SLC32A1 was previously considered a candidate gene for human hyperekplexia, but eight missense variants in SLC32A1 have recently been reported in families with genetic epilepsy with febrile seizures plus or idiopathic generalized epilepsy (Heron and others 2021), making it unlikely that mutations in SLC32A1 are associated with SD. Here, SLC32A1 is linked to idiopathic generalized epilepsy.