NRXN1 (Neurexin-1) variants and mutations

NRXN1 (also known as Neurexin-1) is a human protein-coding gene encoding a neurexin-1 protein. It helps organize presynaptic adhesion and aligns neurotransmitter-release machinery with postsynaptic partners through interactions with neuroligins and other ligands. Haploinsufficiency and disruptive variants increase risk for neurodevelopmental disorders including intellectual disability, autism, epilepsy, and schizophrenia. This analysis covers 3,001 NRXN1 variants and mutations. Of these, 59% have computational variant effect predictions. Disease context includes Pitt-Hopkins-like syndrome 2, hereditary disease, and autism spectrum disorder. Example NRXN1 variants include M1?, M1I, and M1K.

Variant analysis overview

Variant and mutation evidence

Clinical, disease, and population context

Protein structure and variant hotspots

Data sources

Evidence in this analysis draws on EBI Proteins Variation, UniProt, gnomAD v4, EuropePMC, 3D Hotspot Analysis, Interaction Network Analysis, AlphaFold DB, gnomAD constraint, Open Targets, ClinGen, MaveDB, LitVar.

Notable NRXN1 variants

Examples include M1?, M1I, M1K, M1T, G2E, G2R, G2W, T3K. Listed records include available protein-change notation, database identifiers, clinical classifications, computational predictions, population evidence, experimental measurements, and disease context.