A: The variant NC_000021.9:g.34370622dup in gene KCNE2 is classified as 'Conflicting_classifications_of_pathogenicity' for Cardiovascular_phenotype|Atrial_fibrillation,_familial,_4|Long_QT_syndrome_6. Molecular consequence: SO:0001589: frameshift_variant. Variant type: Duplication. Disease database links: MedGen:CN230736|MONDO:MONDO:0012677,MedGen:C1862394,OMIM:611493|MONDO:MONDO:0013370,MedGen:C3150953,OMIM:613693,Orphanet:101016,Orphanet:768. Review status: criteria provided, conflicting classifications.