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학술저널
저자정보
Jiahui Chen (Peking University Cancer Hospital and Institute Beijing China) Anqiang Wang (Peking University Cancer Hospital and Institute Beijing China) Jun Ji (Shandong University Jinan China) Kai Zhou (Peking University Cancer Hospital and Institute Beijing China) Zhaode Bu (Peking University Cancer Hospital and Institute Beijing China) Guoqing Lyu (Peking University Shenzhen Hospital Shenzhen China) Jiafu Ji (Peking University Cancer Hospital and Institute Beijing China)
저널정보
대한암학회 Cancer Research and Treatment Cancer Research and Treatment 제53권 제1호
발행연도
2021.1
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148 - 161 (14page)

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Purpose Gastric cancer (GC) has substantial biological differences between Asian and non-Asian populations, which makes it difficult to have a unified predictive measure for all people. We aimed to identify novel prognostic biomarkers to help predict the prognosis of Asian GC patients. Materials and Methods We investigated the differential gene expression between GC and normal tissues of GSE66229. Univariate, multivariate and Lasso Cox regression analyses were conducted to establish a four-gene-related prognostic model based on the risk score. The risk score was based on a linear combination of the expression levels of individual genes multiplied by their multivariate Cox regression coefficients. Validation of the prognostic model was conducted using The Cancer Genome Atlas (TCGA) database. A nomogram containing clinical characteristics and the prognostic model was established to predict the prognosis of Asian GC patients. Results Four genes (RBPMS2, RGN, PLEKHS1, and CT83) were selected to establish the prognostic model, and it was validated in the TCGA Asian cohort. Receiver operating characteristic analysis confirmed the sensitivity and specificity of the prognostic model. Based on the prognostic model, a nomogram containing clinical characteristics and the prognostic model was established, and Harrell’s concordance index of the nomogram for evaluating the overall survival significantly higher than the model only focuses on the pathologic stage (0.74 vs. 0.64, p < 0.001). Conclusion The four-gene-related prognostic model and the nomogram based on it are reliable tools for predicting the overall survival of Asian GC patients.

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