ANG and glioblastoma: Recently, serum ANG level has been found to be a prognostic factor for numerous tumours, such as glioblastoma (Hu et al., 2019), non-Hodgkin lymphoma (Fang et al., 2011), cervical cancer (Landt et al., 2011), and laryngeal carcinoma (Marioni et al., 2010).