A: The variant NC_000019.10:g.46605824C>T in gene CALM3 is classified as 'Uncertain_significance' for Long_QT_syndrome_16|Long_QT_syndrome_1|Congenital_long_QT_syndrome. Molecular consequence: SO:0001627: intron_variant. Variant type: single_nucleotide_variant. Disease database links: MONDO:MONDO:0032915,MedGen:C5394068,OMIM:618782|MONDO:MONDO:0100316,MedGen:C4551647,OMIM:192500,Orphanet:101016,Orphanet:768|MONDO:MONDO:0019171,MedGen:C1141890,OMIM:PS192500,Orphanet:101016,Orphanet:768. Review status: criteria provided, single submitter.