Another finding in support of this lack of correlation is that serum hepcidin levels as well as the serum hepcidin:ferritin ratio was similar between the AIH and PBC/PSC groups, despite the differences in inflammation severity among them (43.8% with moderate/severe inflammation in AIH vs. 23.5% in PBC/PSC group). This evidence concerns the gene HAMP and pancreatic serous cystadenoma.