A: The variant NC_000021.9:g.34370641_34370643dup in gene KCNE2 is classified as 'Uncertain_significance' for Long_QT_syndrome_6|not_provided|Cardiovascular_phenotype. Molecular consequence: SO:0001821: inframe_insertion. Variant type: Duplication. Disease database links: MONDO:MONDO:0013370,MedGen:C3150953,OMIM:613693,Orphanet:101016,Orphanet:768|MedGen:C3661900|MedGen:CN230736. Review status: criteria provided, multiple submitters, no conflicts.