A: The variant NC_000020.11:g.33443690G>T in gene SNTA1 is classified as 'Uncertain_significance' for Long_QT_syndrome_12. Molecular consequence: SO:0001623: 5_prime_UTR_variant. Variant type: single_nucleotide_variant. Disease database links: MONDO:MONDO:0013062,MedGen:C2751830,OMIM:612955,Orphanet:101016,Orphanet:768. Review status: criteria provided, single submitter.