A: The variant NC_000020.11:g.18507907G>A in gene SEC23B is classified as 'Uncertain_significance' for Congenital_dyserythropoietic_anemia. Molecular consequence: SO:0001627: intron_variant. Variant type: single_nucleotide_variant. Disease database links: MONDO:MONDO:0019403,MedGen:C0002876,OMIM:PS224120,Orphanet:85. Review status: criteria provided, single submitter.