RRAS2 and fibrosarcoma: In contrast to the RRAS2 knockout in A2780 cells (see above, Fig. 2C) or in the fibrosarcoma #2 cell line [18], we did not detect any alteration in the proliferative rates of the cell line derivatives expressing the EGFP-tagged version of endogenous R-RAS2Q72L (LC, IF-P and XRB, unpublished data).