The active pathways in the COLEC12 high-expression group indicated the possible presence of immune response which is mediated by the regulatory role of COLEC12 in SCLC, and the active pathways in the COLEC12 low-expression group indicated the possible presence of process of cell division which is mediated by the regulatory role of COLEC12 in SCLC. This evidence concerns the gene COLEC12 and small cell lung carcinoma.