A: The variant NC_000020.11:g.33439029G>A in gene SNTA1 is classified as 'Uncertain_significance' for Long_QT_syndrome. Molecular consequence: SO:0001627: intron_variant. Variant type: single_nucleotide_variant. Disease database links: MONDO:MONDO:0002442,MeSH:D008133,MedGen:C0023976. Review status: criteria provided, single submitter.