He Cheng1, Guopei Luo2, Yu Lu2, Kaizhou Jin2, Meng Guo2, Jin Xu2, Jiang Long2, Liang Liu2, Xianjun Yu3, Chen Liu4. 1. Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, No. 270 DongAn Road, Shanghai 200032, PR China; Department of Oncology, Shanghai Medical College, Fudan University, No. 270 DongAn Road, Shanghai 200032, PR China; Pancreatic Cancer Institute, Fudan University, No. 270 DongAn Road, Shanghai 200032, PR China; Collaborative Innovation Center for Cancer Medicine, 651 Dongfeng East Road, Guangzhou, PR China. 2. Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, No. 270 DongAn Road, Shanghai 200032, PR China; Department of Oncology, Shanghai Medical College, Fudan University, No. 270 DongAn Road, Shanghai 200032, PR China; Pancreatic Cancer Institute, Fudan University, No. 270 DongAn Road, Shanghai 200032, PR China. 3. Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, No. 270 DongAn Road, Shanghai 200032, PR China; Department of Oncology, Shanghai Medical College, Fudan University, No. 270 DongAn Road, Shanghai 200032, PR China; Pancreatic Cancer Institute, Fudan University, No. 270 DongAn Road, Shanghai 200032, PR China; Collaborative Innovation Center for Cancer Medicine, 651 Dongfeng East Road, Guangzhou, PR China. Electronic address: yuxianjun@fudanpci.org. 4. Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, No. 270 DongAn Road, Shanghai 200032, PR China; Department of Oncology, Shanghai Medical College, Fudan University, No. 270 DongAn Road, Shanghai 200032, PR China; Pancreatic Cancer Institute, Fudan University, No. 270 DongAn Road, Shanghai 200032, PR China. Electronic address: liuchen@fudanpci.org.
Abstract
BACKGROUND: The systemic inflammation response and immune impairment are closely related to the development and progression of various tumours, such as pancreatic cancer. In this study, we evaluated circulating inflammation factors and circulating regulatory T cells (Tregs) as markers of immunosuppression in a cohort of Chinese patients with resectable pancreatic cancer. METHODS: Samples were retrospectively collected from a series of 195 pathological stage I/II pancreatic cancer patients who underwent potentially curative surgery between June 2010 and April 2014. To examine the prognostic factors, circulating systemic inflammation-based markers and Tregs, detected by flow cytometry, were analysed. RESULTS: Univariate analyses revealed that the neutrophil-lymphocyte ratio (NLR), TNM stage, differentiation, chemotherapy, CA19-9 levels and presence of Tregs are significantly associated with overall survival in patients with resectable pancreatic cancers. NLR (p = 0.001, HR = 0.538), TNM stage (p = 0.004, HR = 0.593), differentiation (p = 0.011, HR = 0.46), chemotherapy (p = 0.006, HR = 0.516) and Tregs (p = 0.001, HR = 0.558) are identified as independent prognostic markers by multivariate analyses. Interestingly, we also found that high NLR levels combined with a high proportion of Tregs (p < 0.001, HR = 3.521) correlate strongly with worse survival, with a greater than 3.5-fold increased risk of death compared with those with concurrent low levels of NLR and Tregs. CONCLUSIONS: The preoperative NLR and circulating regulatory T cells are potentially independent prognostic factors for overall survival in resectable pancreatic cancer patients. High NLR levels combined with poor immune state before surgery, as measured by Tregs, are associated with an extremely poor prognosis.
BACKGROUND: The systemic inflammation response and immune impairment are closely related to the development and progression of various tumours, such as pancreatic cancer. In this study, we evaluated circulating inflammation factors and circulating regulatory T cells (Tregs) as markers of immunosuppression in a cohort of Chinese patients with resectable pancreatic cancer. METHODS: Samples were retrospectively collected from a series of 195 pathological stage I/II pancreatic cancerpatients who underwent potentially curative surgery between June 2010 and April 2014. To examine the prognostic factors, circulating systemic inflammation-based markers and Tregs, detected by flow cytometry, were analysed. RESULTS: Univariate analyses revealed that the neutrophil-lymphocyte ratio (NLR), TNM stage, differentiation, chemotherapy, CA19-9 levels and presence of Tregs are significantly associated with overall survival in patients with resectable pancreatic cancers. NLR (p = 0.001, HR = 0.538), TNM stage (p = 0.004, HR = 0.593), differentiation (p = 0.011, HR = 0.46), chemotherapy (p = 0.006, HR = 0.516) and Tregs (p = 0.001, HR = 0.558) are identified as independent prognostic markers by multivariate analyses. Interestingly, we also found that high NLR levels combined with a high proportion of Tregs (p < 0.001, HR = 3.521) correlate strongly with worse survival, with a greater than 3.5-fold increased risk of death compared with those with concurrent low levels of NLR and Tregs. CONCLUSIONS: The preoperative NLR and circulating regulatory T cells are potentially independent prognostic factors for overall survival in resectable pancreatic cancerpatients. High NLR levels combined with poor immune state before surgery, as measured by Tregs, are associated with an extremely poor prognosis.