RAC2 and central nervous system cancer: Seven Rho GTPases (RND1, RND3, RAC3, RHOA, RAC2, RAC1 and RHOC) showed a significantly greater connectivity in grade IV glioma and seven (CHP, RHOD, RHOF, RHOB, RHOQ, RND2, RHOBTB3) showed greater connectivity in grade II glioma.