Abstract

To analyze the expression of MCP-1 and CCR2 in newly diagnosed diffuse large B-cell lymphoma (DLBCL), and to evaluate their correlation with clinicopathological features and prognosis. A total of 141 patients with DLBCL diagnosed and treated in the Department of Hematology, the First Affiliated Hospital of Bengbu Medical College from January 2017 to May 2022 were retrospectively collected. The clinical characteristics, pathological data and prognostic factors of the patients were collected. Immunohistochemical staining was used to detect the expression of MCP-1 and CCR2 in the tissues of newly treated DLBCL patients, and to analyze the relationship between MCP-1 and clinical characteristics, prognosis and survival of patients. The expression of MCP-1 and CCR2 were correlated with Ann Arbor stage, IPI score, lactate dehydrogenase (LDH), Ki-67 index and therapeutic effect. There were no significant correlation between the expression of MCP-1 or CCR2 and other clinical histopathological parameters such as gender, age, β2-microglobulin, BCL-2, BCL-6, Hans classification, initial location, B symptoms, bone marrow involvement. There was a statistical difference in OS and PFS between the MCP-1 or CCR2 positive group and the negative group, which was associated to poor prognosis.Univariate Cox regression analysis showed that β2-microglobulin, Ki-67 index, IPI score, MCP-1, CCR2 expression levels and disease remission affected the PFS and OS of DLBCL patients (P < 0.05). Gender, age, LDH, BCL-2, BCL-6, Hans classification, primary tumor site, B symptoms, bone marrow involvement, Ann Arbor stage had no effect on PFS and OS (P >0.05). Multivariate analysis showed that β2-microglobulin, Ki-67 index, IPI score, MCP-1, CCR2 expression levels and disease remission were independent influencing factors of patients (P < 0.05). The expression rate of MCP-1 or CCR2 in newly treated DLBCL is high, and it is correlated with the clinical features of poor prognosis such as stage and LDH of DLBCL patients, which is a poor prognostic factor affecting PFS and OS.

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