The prognostic value of the preoperative albumin/globulin and monocyte ratio in resected early-stage non-small cell lung cancer

Abstract

ObjectiveThis study investigated the prognostic value of the preoperative albumin/globulin to monocyte ratio (AGMR) in patients with resected non-small cell lung cancer (NSCLC). MethodsThe study retrospectively enrolled patients with resected NSCLC from the Department of Thoracic Surgery, China–Japan Union Hospital of Jilin University from January 2016 to December 2017. Baseline demographic and clinicopathological data were collected. The preoperative AGMR was calculated. Propensity score matching (PSM) analysis was applied. The receiver operating characteristic curve was used to determine the optimal AGMR cut-off value. The Kaplan–Meier method was used to calculate the overall survival (OS) and disease-free survival (DFS). The Cox proportional hazards regression model was used to evaluate the prognostic value of the AGMR. ResultsA total of 305 NSCLC patients were included. The optimal AGMR value was 2.80. Before PSM. The high AGMR (>2.80) group had a significantly longer OS (41.34 + 11.32 vs. 32.03 + 17.01 months; P < 0.01) and DFS (39.00 + 14.49 vs. 28.78 + 19.13 months; P < 0.01) compared with the low AGMR (≤2.80) group. Multivariate analyses showed that AGMR (P < 0.01) in addition to sex (P < 0.05), body mass index (P < 0.01), history of respiratory diseases (P < 0.01), lymph node metastasis (P < 0.01), and tumor size (P < 0.01) were associated with OS and DFS. After PSM, AGMR remained as an independent prognostic factor for OS (hazard ratio [HR] 2.572, 95% confidence interval [CI]: 1.470–4.502; P = 0.001) and DFS (HR 2.110, 95% CI: 1.228–3.626; P = 0.007). ConclusionThe preoperative AGMR is a potential prognostic indicator for OS and DFS in resected early-stage NSCLC.