Even so, mice with tumors showed a reduction in circulating FKN compared with control mice (1.32 ng/ml ± 0.03) at least at early time points with relatively small tumors (67.47 ± 25.39 mm3 in FKN‐producing tumor‐bearing mice vs 516.3 ± 194.1 mm3 in wild‐type control group; Fig 3A). The gene discussed is CX3CL1; the disease is neoplasm.