PTTG1 and lung carcinoma: Investigated in tumors, PTTG-1 has been found over expressed in pituitary tumors, thyroid cancer [16,17], esophageal squamous cancer [18,19], uterine leioma [20], lung cancer [21,22], lymphoid cancer [23,24], colon cancer [25], gastric carcinoma [26] testicular cancer [27], breast cancer [28], astrocytoma cancer [29,30].