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• W2797105517 abstract "// Mitsuro Kanda 1 , Kenta Murotani 2 , Haruyoshi Tanaka 1 , Takashi Miwa 1 , Shinichi Umeda 1 , Chie Tanaka 1 , Daisuke Kobayashi 1 , Masamichi Hayashi 1 , Norifumi Hattori 1 , Masaya Suenaga 1 , Suguru Yamada 1 , Goro Nakayama 1 , Michitaka Fujiwara 1 and Yasuhiro Kodera 1 1 Department of Gastroenterological Surgery (Surgery II), Nagoya University Graduate School of Medicine, Nagoya, Japan 2 Clinical Research Center, Aichi Medical University Hospital, Nagakute, Japan Correspondence to: Mitsuro Kanda, email: m-kanda@med.nagoya-u.ac.jp Keywords: gastric cancer; expression panel; prognosis; biomarker Received: January 05, 2018      Accepted: February 27, 2018      Published: April 10, 2018 ABSTRACT Most of the proposed individual markers had limited clinical utility due to the inherent biological and genetic heterogeneity of gastric cancer. We aimed to build a new molecular-based model to predict prognosis in patients with gastric cancer. A total of 200 patients who underwent gastric resection for gastric cancer were divided into learning and validation cohorts using a table of random numbers in a 1:1 ratio. In the learning cohort, mRNA expression levels of 15 molecular markers in gastric tissues were analyzed and concordance index (C-index) values of all single and combinations of the 15 candidate markers for overall survival were calculated. The multigene expression panel was designed according to C-index values and the subpopulation index. Expression scores were determined with weighting according to the coefficient of each constituent. The reproducibility of the panel was evaluated in the validation cohort. C-index values of the 15 single candidate markers ranged from 0.506–0.653. Among 32,767 combinations, the optimal and balanced expression panel comprised four constituents ( MAGED2, SYT8, BTG1 , and FAM46 ) and the C-index value was 0.793. Using this panel, patients were provisionally categorized with scores of 1–3, and clearly stratified into favorable, intermediate, and poor overall survival groups. In the validation cohort, both overall and disease-free survival rates decreased incrementally with increasing expression scores. Multivariate analysis revealed that the expression score was an independent prognostic factor for overall survival after curative gastrectomy. We developed an integrated multigene expression panel that simply and accurately stratified risk of patients with gastric cancer." @default.
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• W2797105517 date "2018-04-10" @default.
• W2797105517 modified "2023-09-27" @default.
• W2797105517 title "Integrated multigene expression panel to prognosticate patients with gastric cancer" @default.
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• W2797105517 doi "https://doi.org/10.18632/oncotarget.24661" @default.
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