In our cohort, only one subject had a seizure disorder (subject 1), although his 5 Mb deletion encompassed the entire NRXN1 gene as well as the genes for follicle-stimulating hormone receptor (FSHR), luteinizing hormone/choriogonadotropin receptor (LHCGR), and Stoned B-like factor (STN1). Here, NRXN1 is linked to epilepsy.