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- W4281729246 abstract "Abstract Background The multidisciplinary treatment including induction chemotherapy plus conversion surgery (CS) has attracted attention as a new strategy to improve the outcome of metastatic gastric cancer (MGC). However, it is unclear which patients achieve a good response to chemotherapy and successful CS. Tumor-infiltrating immune cells (TIICs) have been reported to be both prognostic and predictive biomarkers not only in immunotherapy but also in chemotherapy in many cancer types. However, there have been no reports on the usefulness of TIICs as biomarkers in conversion surgery for MGC. The aim of the present study was to evaluate the association between the TIICs and treatment outcome for the multidisciplinary treatment in MGC. Methods We retrospectively analyzed 68 MGC patients who received docetaxel plus cisplatin plus S-1 (DCS) therapy between April 2006 and March 2019 in our institute. The number of tumor-infiltrating CD4 + , CD8 + , Foxp3 + lymphocytes, CD68 + , CD163 + macrophages in pre-treatment endoscopic biopsy samples were evaluated to investigate their predictive value for multidisciplinary treatment. Results Fifty patients underwent CS following DCS therapy (CS group), whereas 18 patients underwent DCS therapy alone (non-CS group). The median survival time (MST) of CS group was 33.3 months, which was significantly longer than the MST of 9.0 months in non-CS group ( p < 0.01). The number of CD163 + macrophages was extracted as an independent prognostic factor for overall survival in all patients. There were more cases of high infiltration of CD163 + macrophages in non-CS group than in CS group. Furthermore, in CS group, pathological responders to DCS therapy showed low infiltration of CD163 + macrophages, and high infiltration of CD8 + lymphocyte. CD163 low group showed a significant prolonged survival compared with CD163 high group in patients who underwent CS ( p = 0.02). Conclusions The pre-treatment CD163 + macrophages infiltration would be a pivotal biomarker for predicting prognosis and pathological response to multidisciplinary treatment among TIICs in MGC. Thus, for patients with low CD163 + macrophage infiltration in pre-treatment biopsy sample, diagnostic imaging should be performed frequently during chemotherapy to avoid missing the optimal timing for CS, and CS should be aggressively considered as a treatment option if curative resection is deemed feasible." @default.
- W4281729246 created "2022-06-13" @default.
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- W4281729246 date "2022-06-03" @default.
- W4281729246 modified "2023-09-30" @default.
- W4281729246 title "Prognostic value of tumor-infiltrating CD163+macrophage in patients with metastatic gastric cancer undergoing multidisciplinary treatment" @default.
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- W4281729246 doi "https://doi.org/10.1186/s12885-022-09713-y" @default.
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