PROM1 and cervical cancer: G-CSF overexpression in cervical cancer could generate more PMN-MDSC and ALDH+ CSCs compared with control; YAP activation in prostate cancer is responsible for CXCL5 upregulation to attract CXCR2+ PMN-MDSC [129], and TGF-β secretion by CD133+ melanoma cells could increase surrounding PMN-MDSCs and TAM infiltration (Figure 2) [130].