Abstract:ObjectivesColorectal cancer is one of the most common cancers. It is a heterogeneous tumor. The aim of this study was to investigate MMR protein expression, KRAS-NRAS-BRAF gene mutation, HER-2 and PD-L1 status in large Chinese CRC patients. MethodsWe reviewed all CRC patients who underwent surgery in Peking University Cancer Hospital between 2010 and 2018 from a prospective collected medical database. We analyzed the clinic-pathological factors associated with immunohistochemistry profiles. We analyzed KRAS-NR… Show more
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