Albumin and Neutrophil-to-Lymphocyte Ratio Score in Neoadjuvant Concurrent Chemoradiotherapy for Esophageal Cancer: Comparison With Prognostic Nutritional Index

Background/Aim: Neoadjuvant concurrent chemoradiotherapy (CCRT) for esophageal cancer is often overwhelming due to its toxic effects. This study aimed to establish a prognostic indicator based on pretreatment albumin and neutrophil-to-lymphocyte (NLR) ratio score (ANS) in comparison to the Prognostic Nutritional Index (PNI) in patients with esophageal cancer. Patients and Methods: A total of 123 patients who received neoadjuvant CCRT for esophageal cancer were prospectively and consecutively recruited between August 2016 and December 2017 from three medical institutes in Taiwan. Patients were assigned to ANS 0, 1, and 2 groups based on their pretreatment albumin and NLR values. ANS and PNI performances were compared for prediction of survival outcome. Results: Compared with ANS 0 (39 patients) and ANS 1 (51 patients), ANS 2 (33 patients) cases showed worse overall survival (hazard ratio=2.96; 95% confidence interval=1.45-6.05; log-rank p=0.003; hazard ratio=3.79; 95% confidence interval=1.79-8.02, p<0.001, respectively). ANS had better performance in overall survival evaluation and discrimination ability than PNI and individual albumin and NLR. Patients in the ANS 0, 1, and 2 had radiotherapy incompletion rates of 2.6%, 3.9%, and 18.2%, respectively, and chemotherapy incompletion rates of 5.1%, 7.8%, and 30.3%, respectively. Patients in the ANS 2 group were significantly associated with a higher incidence of infection (30.3%) than those in the ANS 0 (10.3%) and ANS 1 groups (9.8%). Conclusion: Pre-treatment ANS was significantly associated with CCRT safety profiles, CCRT completion rate, and survival outcome in patients with esophageal cancer with excellent performance compared to PNI and NLR.