A: The variant NC_000019.10:g.19197625C>T in gene RFXANK is classified as 'Uncertain_significance' for MHC_class_II_deficiency. Molecular consequence: SO:0001627: intron_variant. Variant type: single_nucleotide_variant. Disease database links: MONDO:MONDO:0008855,MedGen:C5447452,OMIM:PS209920,Orphanet:572. Review status: criteria provided, single submitter.