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- W2010028045 abstract "Background and Objectives A previous study of ours indicated that platelet-derived growth factor-A (PDGF-A) mRNA expression in biopsy specimens can identify a subgroup of high-risk gastric carcinoma patients, while clinicopathologic studies have shown that lymph node involvement is an important risk factor for predicting overall survival. To identify gastric carcinoma patients at high risk for recurrence, we assessed a two-step evaluation consisting of mRNA expression of tumor growth–related factors and the histopathologic findings. Methods The reverse transcriptase–polymerase chain reaction (RT-PCR) was used to assay the gene expression of PDGF-A and transforming growth factor-β1 (TGF-β1) in 69 gastric carcinoma endoscopic biopsy specimens (prospective cohort). The corresponding gastric carcinoma surgical specimens were classified histologically. Finally, the patients' survival curves were calculated. The relationships among the mRNA expression, histopathologic findings, and survival period were analyzed statistically. Results Nodal involvement correlated with PDGF-A and TGF-β1 mRNA expression in early and advanced carcinomas, respectively. Both PDGF-A mRNA and TGF-β1 mRNA expression were independent preoperative prognostic indicators in advanced cases. The ratio of involved nodes (n1) to total perigastric lymph nodes dissected (percentage of involved nodes) was the most independent postoperative prognostic indicator in advanced cases. Early carcinomas were divided preoperatively into two types. Advanced carcinomas were divided preoperatively into three. These were divided again postoperatively according to the percentage of involved nodes into high- and low-malignacy groups. Conclusions A two-step evaluation of the malignant potential of gastric carcinoma by a combination of preoperative evaluation for PDGF-A and TGF-β1 expression and postoperative pathologic examination would yield a more accurate prognosis for patients with gastric carcinoma. J. Surg. Oncol. 1999;72:142–149. © 1999 Wiley-Liss, Inc." @default.
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- W2010028045 date "1999-11-01" @default.
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- W2010028045 title "New therapeutic strategy for gastric carcinoma: A two-step evaluation of malignant potential from its molecular biologic and pathologic characteristics" @default.
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- W2010028045 doi "https://doi.org/10.1002/(sici)1096-9098(199911)72:3<142::aid-jso6>3.0.co;2-b" @default.
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