GRPEL1 and central nervous system cancer: In addition, compared with grp‐E (left glioma, 0.331 ± 0.019; right glioma, 0.393 ± 0.033), local efficiency was weaker in grp‐nE (left glioma, 0.275 ± 0.005, p = 0.0056; right glioma, 0.286 ± 0.014, p = 0.0063) and grp‐GnE (left glioma, 0.276 ± 0.013, p = 0.0432; right glioma, 0.272 ± 0.009, p = 0.0046).