The independent risk factors for cancer recurrence or all-cause mortality included age ≥60 years old, male patients, perioperative blood transfusion, segmental/wedge resection and pneumonectomy, thoracotomy, postoperative complications, lung adenocarcinoma, TNM stages, elevated CEA and CYFRA211 values, and postoperative radiotherapy (Table 3). Here, CEACAM5 is linked to cancer.