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Mismatch‐repair deficiency and microsatellite instability‐high (dMMR/MSI‐H) colorectal cancer (CRC) is treated with programmed death (PD)‐1 antibody regardless of PD‐ligand (L)1 expression in tumor cells. We previously found that abundant CD169+… Click to show full abstract
Mismatch‐repair deficiency and microsatellite instability‐high (dMMR/MSI‐H) colorectal cancer (CRC) is treated with programmed death (PD)‐1 antibody regardless of PD‐ligand (L)1 expression in tumor cells. We previously found that abundant CD169+ macrophages in regional lymph node (RLN) sinuses and CD8+ tumor‐infiltrating lymphocytes (TILs) positively correlated in CRC and were associated with a favorable prognosis. However, associations between dMMR/MSI‐H CRC and CD8+ TILs or prognoses vary among studies. In this study, we attempted to compare the association between MMR status, CD169+ macrophages in RLNs, CD8+ TILs, PD‐L1 scores, and prognoses in CRC.
Journal Title: Cancer Medicine
Year Published: 2023
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