A: The variant NC_000021.9:g.34370631G>T in gene KCNE2 is classified as 'Conflicting_classifications_of_pathogenicity' for Cardiovascular_phenotype|Congenital_long_QT_syndrome|Long_QT_syndrome_6|Atrial_fibrillation,_familial,_4. Molecular consequence: SO:0001819: synonymous_variant. Variant type: single_nucleotide_variant. Disease database links: MedGen:CN230736|MONDO:MONDO:0019171,MedGen:C1141890,OMIM:PS192500,Orphanet:101016,Orphanet:768|MONDO:MONDO:0013370,MedGen:C3150953,OMIM:613693,Orphanet:101016,Orphanet:768|MONDO:MONDO:0012677,MedGen:C1862394,OMIM:611493. Review status: criteria provided, conflicting classifications.