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  • Title: Prognostic significance of CD163+ tumor-associated macrophages in colorectal cancer.
    Author: Xue T, Yan K, Cai Y, Sun J, Chen Z, Chen X, Wu W.
    Journal: World J Surg Oncol; 2021 Jun 24; 19(1):186. PubMed ID: 34167561.
    Abstract:
    BACKGROUND: This study aimed to explore the prognostic significance of tumor-associated macrophage (TAM) infiltration in colorectal cancer (CRC) patients. METHODS: Tissue microarray and immunohistochemistry were used to detect the infiltration of CD163+ TAMs in 209 CRC samples, and the Kaplan-Meier method was used for survival analysis. Cox proportional hazards analysis was used for univariate analysis and multivariate analysis of clinically relevant confounders. RESULTS: The samples were divided into low-level (n = 105) and high-level infiltration groups (n = 104) by the median number of CD163+ TAMs detected. The overall survival (OS) and disease-free survival (DFS) of CRC patients in the low-level CD163+ TAM infiltration group were longer than those in the high-level CD163+ TAM infiltration group (P < 0.001). Infiltration of CD163+ TAMs in CRC tissues was a negative prognostic factor for CRC patients. Risks of death and disease recurrence for CRC patients in the low-level CD163+ TAM infiltration group were lower than those in the high-level CD163+ TAM infiltration group (HROS = 0.183, 95% CI 0.052-0.647, P = 0.008; HRDFS = 0.191, 95% CI 0.078-0.470, P = 0.000). CONCLUSIONS: The infiltration of CD163+ TAMs in CRC tissue is an independent adverse factor for the prognosis of CRC patients. High-level infiltration of CD163+ TAMs is associated with shorter OS and DFS.
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