Human Epidermal Growth Factor Receptor 2-Positive, Claudin-18 Isoform 2-Positive, Mismatch Repair-Deficient Gastric Cancer Revealed by Immunohistochemical Analysis of Surgical Specimens: A Case Report
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Background: Human epidermal growth factor receptor 2 (HER2), mismatch repair (MMR) proteins, claudin-18 isoform 2 (CLDN18.2), and the programmed cell death ligand-1 combined positive score (PD-L1 CPS) are predictive biomarkers fo... ...
