A: The variant NC_000020.11:g.63439654T>C in gene KCNQ2 is classified as 'not_provided' for Complex_neurodevelopmental_disorder. Molecular consequence: SO:0001583: missense_variant. Variant type: single_nucleotide_variant. Disease database links: MONDO:MONDO:0100038,MedGen:C5568766,Orphanet:528084. Review status: no classification provided.