Furthermore, it has been shown that HMGA2 (High Mobility Group AT-hook 2), which is a well-known non-transcription factor with oncogenic properties, is highly expressed in several benign tumors of mesenchymal origin, e.g., pituitary adenomas [7,8] and several malignancies, including thyroid cancer [6]. The gene discussed is HMGA2; the disease is pituitary gland adenoma.