COPB2 and cancer: As shown in Figure 5(b), COPB2 expression was positively associated with the infiltration of cancer-associated fibroblasts in CESC, COAD, GBM, HNSC, LGG, LIHC, LUAD, MESO, OV, PAAD, READ, SARC, THYM, and UCS cancer types derived from TCGA database.