RHO and neoplasm: This list includes drugs that interfere with microtubule stability, reduce exosome immune suppressive activities against natural killer cells, modulate the pH of the tumor microenvironment, inhibit the Rho/Rock pathway, or interfere with the sorting (sphingomyelinase inhibitors) and expression of endosomal proteins (including Rabs) 2, 3, 9, 41.