CEACAM5 and lymphopenia: Multivariate logistic regression showed the risk of developing chemotherapy-associated lymphopenia <0.66 × 109/L was found in those with pretreatment CEA ≥10 ng ml-1 (OR, 3.338; 95% CI = 1.523-7.315), and the risk of developing chemotherapy-associated lymphopenia <0.91 × 109/L was found in those with age >60 years (OR, 2.872; 95% CI = 1.344-6.136).