HNF1A and hepatocellular adenoma: Our observed HNF1A germline mutation in the DNA‐binding homeodomain (amino acids 198‐281) in exon 4, c.815G>A (p.Arg272His) has previously been described.17 The location of the mutation in the DNA‐binding homeodomain could explain the high penetrance of HCA in the family described in this report.12