A: The variant NC_000022.11:g.42630899C>T in gene CYB5R3 is classified as 'Uncertain_significance' for not_provided|METHEMOGLOBINEMIA,_TYPE_I. Molecular consequence: SO:0001583: missense_variant. Variant type: single_nucleotide_variant. Disease database links: MedGen:C3661900|MedGen:C2749559. Review status: criteria provided, single submitter.