The CEACAM1-S and the CEACAM1-S/CEACAM1-L (S: L) ratio was significantly higher in tumours than in normal tissues (P = 0.023 for CEACAM1-S and 0.016 for the CEACAM1-S/CEACAM1-L (S: L) ratio; Figure 3C and3D, Table 4). The gene discussed is CEACAM1; the disease is neoplasm.