A: The variant NC_000021.9:g.34449407del in gene KCNE1 is classified as 'Pathogenic' for Long_QT_syndrome. Molecular consequence: SO:0001589: frameshift_variant. Variant type: Deletion. Disease database links: MONDO:MONDO:0002442,MeSH:D008133,MedGen:C0023976. Review status: criteria provided, single submitter.