A: The variant NC_000020.11:g.44407421C>T in gene HNF4A is classified as 'Pathogenic' for Maturity_onset_diabetes_mellitus_in_young|Maturity-onset_diabetes_of_the_young_type_1. Molecular consequence: SO:0001587: nonsense. Variant type: single_nucleotide_variant. Disease database links: Human_Phenotype_Ontology:HP:0004904,MONDO:MONDO:0018911,MedGen:C0342276,OMIM:606391,Orphanet:552|MONDO:MONDO:0007452,MedGen:C1852093,OMIM:125850,Orphanet:552. Review status: criteria provided, multiple submitters, no conflicts.