It helps doctors to determine the pathological results of patients, to guide patients for further treatment, to understand the occurrence and origin of tumors, and to determine the treatment prescription and effectiveness of patients. The following molecular pathology indicators are frequently examined: Methylguanine-DNA methyltransferase (MGMT). MicroRNA (microRNA). Isocitrate dehydrogenase. Epidermal growth factor receptor (EGF). Tumor suppressor protein 53 (P53), phosphatase and tensin homologs.