GH1 and primary hypophysitis: Pituitary autoimmunity may play a pivotal role in favoring GHD both in children and in adults, as GH-secreting cells, alone or together with other pituitary hormone-secreting cells, may be aggressed by antipituitary antibodies (APA) in the context of lymphocytic hypophysitis (LYH) or of other forms of autoimmune hypophysitis [2,3,4,5,6,7,8] (Table 1A).