AHO combined with hormone resistance is called PHP1a, pseudohypoparathyroidism type 1a, whereas AHO that occurs on paternal inheritance of an inactivating GNAS mutation without hormone resistance or severe obesity is called PPHP, pseudopseudohypoparathyroidism [11]. The gene discussed is GNAS; the disease is pseudohypoparathyroidism type 1A.