RAB13 and neoplasm: Tumor mutational burden (TMB) was shown to be negatively connected with RAB13 in BRCA (P < 0.001), LGG (P < 0.01), PRAD (P < 0.001), PCPG (P < 0.05), and THYM (P < 0.001), but favorably correlated with RAB13 in SKCM (P < 0.01) (Fig. 4G).