J Cancer 2016; 7(14):2148-2156. doi:10.7150/jca.16455

Research Paper

A Novel Prognostic Score, Based on Preoperative Nutritional Status, Predicts Outcomes of Patients after Curative Resection for Gastric Cancer

Xuechao Liu1,2*, Haibo Qiu1,2*, Jianjun Liu1,2, Shangxiang Chen1,2, Dazhi Xu1,2, Wei Li1,2, Youqing Zhan1,2, Yuanfang Li1,2, Yingbo Chen1,2, Zhiwei Zhou1,2, Xiaowei Sun1,2✉

1. Sun Yat-sen University Cancer Center; State Key Laboratory of Oncology in South China; Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, China;
2. Department of Gastric and Pancreatic Surgery, Sun Yat-sen University Cancer Center, Guangzhou, China.
* Xuechao Liu and Haibo Qiu contributed equally to this work.

Abstract

PURPOSE: We aimed to determine whether preoperative nutritional status (PNS) was a valuable predictor of outcome in patients with gastric cancer (GC).

METHODS: We retrospectively evaluated 1320 patients with GC undergoing curative resection. The PNS score was constructed based on four objective and easily measurable criteria: prognostic nutritional index (PNI) score 1, serum albumin <35 g/L, body mass index (BMI) <18.5 kg/m2, or preoperative weight loss ≥5% of body weight. The PNS score was 2 for patients who met three or four criteria, 1 for those who met one or two criteria, and 0 for those who didn't meet all of these criteria.

RESULTS: The overall survival (OS) rates in patients with PNS scores 0, 1, and 2 were 59.1%, 42.4%, and 23.4%, respectively (P < 0.001). Multivariate analyses revealed the PNS was an independent predictor for OS (HR for PNS 1 and PNS 2: 1.497, 95 % CI: 1.230-1.820 and 2.434, 95 % CI: 1.773-3.340, respectively; p < 0.001). Furthermore, 5-year OS ranged from 92% (stage I) to 37% (stage III), while the combination of TNM and PNS stratified 5-year OS from 95% (TNM I, PNS 0) to 19% (TNM III, PNS 3). Of note, the prognostic significance of PNS was still maintained when stratified by TNM stage, age, sex, tumor size, anemia and adjuvant chemotherapy (All P < 0.05).

CONCLUSIONS: The PNS, a novel nutritional-based prognostic score, is independently associated with OS in GC. Prospective studies are needed to validate its clinical utility.

Keywords: preoperative nutritional status, prognosis, gastric cancer, adjuvant chemotherapy

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How to cite this article:
Liu X, Qiu H, Liu J, Chen S, Xu D, Li W, Zhan Y, Li Y, Chen Y, Zhou Z, Sun X. A Novel Prognostic Score, Based on Preoperative Nutritional Status, Predicts Outcomes of Patients after Curative Resection for Gastric Cancer. J Cancer 2016; 7(14):2148-2156. doi:10.7150/jca.16455. Available from http://www.jcancer.org/v07p2148.htm