A: The variant NC_000021.9:g.43053336A>G in gene CBS is classified as 'Benign' for not_provided|Classic_homocystinuria. Molecular consequence: SO:0001624: 3_prime_UTR_variant. Variant type: single_nucleotide_variant. Disease database links: MedGen:C3661900|MONDO:MONDO:0009352,MedGen:C0751202,OMIM:236200,Orphanet:394. Review status: criteria provided, multiple submitters, no conflicts.