Many cancers are associated with an increased serum hepcidin such as: breast cancer, colangiocarcinoma, squamous cell carcinoma of the oral cavity, gastrointestinal cancer, non-Hodgkin's lymphoma, brain cancer, small cell lung cancer, mesothelioma, multiple myeloma, ovarian cancer, liver cancer, prostate cancer, kidney cancer, leukemia, multiple myeloma. Here, HAMP is linked to plasma cell myeloma.