In fact, only one gene turned out to be preferentially and robustly upregulated by RhoC induction (0.8 log2 fold after 1 day of stimulation, Supplementary Table 1) but less by RhoA overexpression (0,1 log2 fold induction after 1 day, Supplementary Table 1): PTGS2 (COX-2), that is known to increase cell motility and invasion in breast cancer cells [34]. Here, PTGS2 is linked to breast cancer.