Other mutations described in MPN but also in other haematological malignancies are mutations in the thrombopoietin receptor at codon 515 (MPL) [22], the isocitrate dehydrogenase family genes (IDH), the additional sex combs like 1 gene (ASXL1), the casitas B-lineage lymphoma proto-oncogene (CBL), the TET oncogene family member 2 (TET2), and the Ikaros family zinc finger 1 gene (IKZF1) [23]. Here, TET2 is linked to myeloproliferative disorder.