A: The variant NC_000021.9:g.43063089C>A in gene CBS is classified as 'Conflicting_classifications_of_pathogenicity' for HYPERHOMOCYSTEINEMIA,_THROMBOTIC,_CBS-RELATED|CBS-related_disorder|not_provided|Classic_homocystinuria. Molecular consequence: SO:0001627: intron_variant. Variant type: single_nucleotide_variant. Disease database links: MedGen:C3150344|.|MedGen:C3661900|MONDO:MONDO:0009352,MedGen:C0751202,OMIM:236200,Orphanet:394. Review status: criteria provided, conflicting classifications.