Within the sporadic tumor subgroup, 10.5% (50 out of 477) of somatotropinomas, 1.5% (3 out of 197) of prolactinomas, and none (0 out of 54) of the NF-PitNET cases were found to harbor a germline AIP mutation (Table 3; all supplementary material and figures are located in a digital research materials repository (17)). The gene discussed is AIP; the disease is growth hormone-producing pituitary gland neoplasm.