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- Title
Development and verification of a nomogram for predicting the prognosis of resectable gastric cancer with outlet obstruction.
- Authors
Wei, Chengzhi; Li, Changhua; Chen, Xiaojiang; Chen, Guoming; Nie, Runcong; Zhao, Chongyu; Zhou, Zhiwei; Chen, Yongming
- Abstract
<bold>Background: </bold>The prognosis of patients with gastric cancer (GC) with gastric outlet obstruction (GOO) after gastrectomy is highly variable. In this study, we aimed to develop a nomogram to predict the prognosis of these patients.<bold>Patients and Methods: </bold>Data from 218 GC patients with GOO who underwent gastrectomy at Sun Yat-sen University Cancer Center were retrospectively collected as a training cohort. The data of 59 patients with the same diagnosis who underwent gastrectomy at the First Affiliated Hospital of Guangxi Medical University were collected as an external verification cohort. A nomogram for the overall survival (OS) was developed using the Cox regression model in the training cohort, which was validated in a verification cohort.<bold>Results: </bold>Multivariate analysis showed that the surgical procedure (P < 0.001), period of chemotherapy (P < 0.001), T stage (P = 0.006), N stage (P = 0.040), systemic immune-inflammatory index (SII) (P < 0.001), and fibrinogen level (P = 0.026) were independent factors affecting OS. The nomogram constructed on the aforementioned factors for predicting the 1- and 3-year OS achieved a Harrell's concordance index (C-index) of 0.756 and 0.763 for the training and verification cohorts, respectively. Compared with the 8th American Joint Committee on Cancer (AJCC) Tumour-Node-Metastasis (TNM) staging system, the nomogram had higher C-index values and areas under the curve (AUCs) and slightly higher net clinical benefit.<bold>Conclusion: </bold>Compared to the 8th AJCC staging system, the newly developed nomogram showed superior performance in predicting the survival of GC patients with GOO after gastrectomy.
- Publication
BMC Cancer, 2022, Vol 22, Issue 1, p1
- ISSN
1471-2407
- Publication type
journal article
- DOI
10.1186/s12885-022-10260-9