P1.05-019 Two Inflammatory Biomarkers MDC/CCL22 and BLC/CXCL13 Are Independently Associated with the Significant Risk of Early Stage Lung Adenocarcinoma

Abstract

This prospective study was designed to investigate the association between multiple inflammatory biomarkers in circulation and the risk for early stage lung adenocarcinoma. We measured 10 inflammatory biomarkers in 228 early stage lung adenocarcinoma patients and 228 age, sex and smoking matched healthy controls by using the Luminex bead-based assay. Only two biomarkers were significantly associated with early stage lung adenocarcinoma risk after Bonferroni correction: the multivariate odd ratio or OR (95% confidence interval or CI) was 0.29 (0.16-0.53) for MDC/CCL22 (P<0.0001) and 4.17 (2.23-7.79) for BLC /CXCL13 (P<0.0001) for the comparison of 4th quartile with 1st quartile. When analysis was restricted to never smokers (196 patients/196 controls), MDC/CCL22 and BLC/CXCL13 were still significantly associated with early stage lung adenocarcinoma risk (OR; 95% CI; P: 0.37; 0.21-0.66; P<0.0001 for MDC/CCL22 and 2.78; 1.48-5.22; P =0.001 for BLC/CXCL13). Additionally, significance persisted after restricting analysis to 159 stage IA lung adenocarcinoma patients and 159 matched controls for MDC/CCL22 (OR; 95% CI; P: 0.37; 0.21-0.66; <0.0001) and BLC/CXCL13 (2.78; 1.48-5.22). Furthermore, elevated BLC/CXCL13 was associated with a 2.90-fold (95% CI: 1.03-8.17; P=0.037) increased risk of subcentimeter lung adenocarcinoma, and there was an increasing trend for BLC/CXCL13 with the progression of subcentimeter lung adenocarcinoma. Our findings demonstrated that MDC/CCL22 and BLC/CXCL13 were independently associated with the significant risk of early stage lung adenocarcinoma, and this association persisted even in non-smokers and in stage IA patients. Moreover, BLC/CXCL13 was identified to play a carcinogenic role in the progression of lung adenocarcinoma.