CCL2 and glioblastoma: In GBM, CMTM6 was positively correlated with 26 chemokines such as CCL2-5, CXCL1-3, CXCL8-14 and 10 chemokine receptors such as CCR1, CCR2, CXCR1, and only negatively correlated with CX3CL1.