STAT3 and glioblastoma: Intriguingly, p-STAT5, p-ERK, and p-STAT3 signaling profiles reminiscent of the negative prognostic cells from glioblastoma have been seen in leukemia (Irish et al., 2004; Kotecha et al., 2008; Levine et al., 2015) and ovarian cancer (Gonzalez et al., 2018).