Comparison and analysis among expression of CRP and tumor markers in advanced non-small cell lung cancer patients

17126 Background: To investigate the correlation of C-reactive protein (CRP) and tumor markers such as carcinoembryonic antigen (CEA), CA125, cytokeratin 19 antibody (Cyfra 21–1) in non-small cell lung cancer (NSCLC) patients. Methods: CRP, CEA, CA125, Cyfra 21–1 were measured in the serum of 79 patients with advanced non-small cell lung cancer (stage III and IV ) by independent samples t test. Results: It showed statistically significant difference (P < 0.05) in the level of CRP, CEA, CA125, Cyfra211 between lung cancer patients (25.21 ± 19.12 mg/L, 62.89 ± 53.96 ng/L, 46.36 ± 30.03 U/L, 6.85 ± 2.42 ng/L, respectively) and the control subjects. CRP, CA125 showed no significant difference between squamous carcinoma and adenocarcinoma (P = 0.832, 0.406, respectively). CEA was higher in adenocarcinoma than in squamous carcinoma (P = 0.002). Cyfra211 was lower in adenocarcinoma than in squamous carcinoma (P = 0.039). The increase of CRP was accompanied with the increase of CEA, CA125 and Cyfra211 (p < 0.05). At the same time, CRP elevated while CEA, CA125, Cyfra211 increased (p < 0.05). Conclusions: All of CRP, CEA, CA125 and Cyfra211 increased in advanced non-small lung cancer. Combined monitoring on CRP with CEA, CA125, Cyfra211 may be a complementary method in advanced non-small cell lung cancer patients. No significant financial relationships to disclose.