A: The variant NC_000021.9:g.33774812_33774815del in gene ITSN1 is classified as 'Uncertain_significance' for Autistic_behavior. Molecular consequence: SO:0001589: frameshift_variant. Variant type: Deletion. Disease database links: Human_Phenotype_Ontology:HP:0000729,MedGen:C0856975. Review status: criteria provided, single submitter.