Among these were genes associated with IFNγ signaling, including Cxcl9 and the intracellular GTPase Gbp10. Increased Cxcl9 expression was also supported by protein analysis, revealing higher levels of CXCL9 protein in serum from WT versus Mcpt6−/− tumor‐bearing animals. Here, CXCL9 is linked to neoplasm.