Concentrations of IL‐18 were around 30 times higher in MUE dogs (median 3 pg/mL, range 0.52 pg/mL) compared to IE (median 0.09, range 0.15 pg/mL) and 12 times higher compared to dogs with neoplasia (median 0.25 pg/mL, range 0.15 pg/mL); (p < 0.001; Table 2). The gene discussed is IL18; the disease is neoplasm.