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    					| Clinical value of postoperative PNI in prognosis assessment of gastric cancer patients | 
  					 
  					  										
						| Wu Ping1, Du Renjia1, Yu Yun1,Ge Xiaosong2 | 
					 
															
						| 1.Department of Clinical Nutrition, Affiliated Hospital of Jiangnan University, Wuxi 214062, Jiangsu, China;2.Department of Oncology, Affiliated Hospital of Jiangnan University, Wuxi 214062, Jiangsu, China | 
					 
										
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													     		                            						                            																	    Abstract  Objective  The prognostic nutritional index(PNI) is used as a prognostic factor in gastric cancer(GC). Through this retrospective study, we aim to investigate the relationship between the postoperative PNI and prognosis of patients with stage Ⅲ GC.  Methods  The subjects of this retrospective study were 91 patients who underwent resection for stage Ⅲ GC, according to the first chemotherapy after surgery, calculated nutrient comprehensive index, such as PNI, NLR, PLR, SII. Time-dependent receiver operating characteristic curve analyses were used to assess discrimination ability and to determine the optimal cut-off values. Results  According to the optimal cut-off value, they were divided into the low PNI group (PNI<42.3) and the high PNI group (PNI≥42.3).According to the staging, they were divided into Ⅲa, Ⅲb and Ⅲc three substages. All the inflammation-based and/or the nutritional markers of patients of stage Ⅲ GC, multivariate analyses demonstrated PNI and staging were independent prognostic factors for OS (P=0.004 and P=0.009, respectively). Conclusion  PNI is an independent prognostic factor for the prognosis of postoperative chemotherapy patients with gastric cancer, and low PNI and high sub-staging were associated with poor prognosis.
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