Clinical Significance of Tryptophanyl-tRNA Synthetase 1 Gene Expression in Patients With Locally Advanced Gastric Cancer

癌症 淋巴血管侵犯 危险系数 内科学 临床意义 转移 生物标志物 胃肠病学 肿瘤科 病态的 医学 癌症研究 基因表达 生物 置信区间 病理 基因 生物化学
作者
Takashi Oshima,Itaru Hashimoto,YUKIHIKO HIROSHIMA,Yayoi Kimura,MIE TANABE,SHIZUNE ONUMA,Junya Morita,Shinsuke Nagasawa,KYOHEI KANEMATSU,Toru Aoyama,Takanobu Yamada,Takashi Ogata,Yasushi Rino,Aya Saito,YOHEI MIYAGI
出处
期刊:Anticancer Research [International Institute of Anticancer Research (IIAR) Conferences 1997. Athens, Greece. Abstracts]
卷期号:44 (2): 673-678
标识
DOI:10.21873/anticanres.16857
摘要

Background/Aim: The tryptophanyl-tRNA synthetase 1 gene (WARS1), encodes a tryptophan-tRNA synthetase involved in the amino acidification of tryptophan-tRNA and has been reported to be involved in cancer cell growth, metastasis promotion, and drug resistance in a variety of cancers. This study investigated the clinical significance of WARS1 expression as a biomarker in gastric cancer tissues obtained from patients with locally advanced gastric cancer (GC) who underwent radical resection. Patients and Methods: WARS1 expression in GC tissues and adjacent normal gastric mucosa of 253 patients with pStage II/III GC who underwent curative resection was determined using quantitative polymerase chain reaction (PCR). Association of WARS1 expression levels, categorized into high and low expression based on the median expression levels, with clinicopathological factors and overall survival (OS) of these patients was assessed. Results: The low-WARS1 expression group had significantly higher serosal invasion, lymph node metastasis, lymphatic invasion, venous invasion, and pathological stage than did the high-WARS1 expression group. OS was significantly worse in the low- than in the high-WARS1 expression group (5-year survival 52.2% vs. 75.9%; p=0.0001). Furthermore, in multivariate analysis, low WARS1 expression was an independent predictor for poor OS (hazard ratio=2.101; 95% confidence interval=1.328-3.322; p=0.002). Conclusion: In patients with locally advanced GC, after curative resection, WARS1 expression in GC tissue may be a useful prognostic marker.

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