Singh et al. revealed that the transfer of exosomes from MDA-MB-231 cells promotes invasion in non-malignant HMLE cells mediated by the inhibition of the tumor suppressor miR-10b homeobox D10 (HOXD10) and Krüppel-like factor 4 (KLF4) protein expression [34]. Here, KLF4 is linked to neoplasm.