A: The variant NC_000019.10:g.35033828G>A in gene SCN1B is classified as 'Pathogenic' for Conduction_system_disorder. Molecular consequence: SO:0001587: nonsense,SO:0001627: intron_variant. Variant type: single_nucleotide_variant. Disease database links: EFO:EFO_0005137,MONDO:MONDO:0005449,MedGen:C2748542. Review status: no assertion criteria provided.