By contrast, two recent studies by GTE (Groupe d’etude des Tumours Endocrines) have shown a low 10-year survival rate (53,8%) and a high disease-specific risk of death (hazard ratio 4.29) in MEN1 patients, although the data are not referred specifically to glucagonomas, but rather to a miscellaneous group of rare PETs including VIPomas and somatostatinomas [9,26]. Here, MEN1 is linked to neoplasm.