Barlier et al. analyzed 107 patients (prolactinomas (n = 49), non-functioning tumors (n = 29), somatotropinomas (n = 26), ACTH-secreting tumors (n = 2), and TSH-secreting tumors (n = 1)) and found no germline mutations of AIP. The gene discussed is AIP; the disease is growth hormone-producing pituitary gland neoplasm.