A: The variant NC_000020.11:g.33443459G>C in gene SNTA1 is classified as 'Likely_benign' for Cardiovascular_phenotype|Long_QT_syndrome. Molecular consequence: SO:0001819: synonymous_variant. Variant type: single_nucleotide_variant. Disease database links: MedGen:CN230736|MONDO:MONDO:0002442,MeSH:D008133,MedGen:C0023976. Review status: criteria provided, multiple submitters, no conflicts.