Functionless Pituitary Adenoma, also known as non-secretory adenoma of the pituitary gland, is related to gastric cardia adenocarcinoma and thyroid cancer, nonmedullary, 1. An important gene associated with Functionless Pituitary Adenoma is HOTAIR (HOX Transcript Antisense RNA), and among its related pathways/superpathways are Signal Transduction and GPCR downstream signalling. Affiliated tissues include pituitary, and related phenotypes are renal/urinary system and endocrine/exocrine gland