NRXN1 and schizophrenia: NRXN1 deletions are also associated with attention deficit hyperactivity disorder (ADHD), schizophrenia, anxiety, and Tourette syndrome (Béna et al., 2013; Dabell et al., 2013; Al Shehhi et al., 2019), and in some cases obsessive compulsive disorder, epilepsy, macrocephaly, congenital anomalies and hypotonia (Møller et al., 2013; Al Shehhi et al., 2019; Castronovo et al., 2020).