IFNG and small cell lung carcinoma: The concentration of IFN-γ was found to be significantly higher in SCLC patients [median (IQR) = 0.813 {0.369 to 2.088} pg/mL; range = 0.099 pg/mL to 576.4 pg/mL; p-value < 0.001] than healthy controls [median = 0.0165 (0.013 to 0.295) pg/mL].