Genes related to iron regulation, included Hfe (Del-Castillo-Rueda et al., 2012), Slc40a1 (Del-Castillo-Rueda et al., 2012), Hmox1 (Song et al., 2012), Tfrc (Del-Castillo-Rueda et al., 2012) and Gdf15 (Cui et al., 2014), all of which are directly involved in hemochromatosis and iron overload (Figure 8c). This evidence concerns the gene GDF15 and hemochromatosis.