A: The variant NC_000020.11:g.44355851dup in gene HNF4A is classified as 'Pathogenic' for Hyperinsulinism_due_to_HNF1A_deficiency. Molecular consequence: SO:0001587: nonsense,SO:0001623: 5_prime_UTR_variant. Variant type: Duplication. Disease database links: MONDO:MONDO:0017935,MedGen:C4303475,Orphanet:324575. Review status: criteria provided, single submitter.