Such a result may be explained by the fact that MSCs play a supporting role in tumorigenesis through the secretion of factors such as IL6, IL8, VEGF, platelet-derived growth factor (PDGF), fibroblast growth factor (FGF)-7, TGF-β, and vimentin, supporting the growth and chemoresistance of the tumor [26]. Here, IL6 is linked to neoplasm.