In this study, a comprehensive collection of 180-spot tissue array chips was obtained from Shanghai Outdo Biotech, Ltd. The tissue array chip contains a total of 97 GC samples and 83 corresponding normal tissues. Importantly, these samples were accompanied by 5 years of prognosis data. All patients’ samples were collected with their permission, and our research protocol received ethical approval from the Ethics Committee of The Second Affiliated Hospital of Jianghan University.
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