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- W2912889886 abstract "196 Background: Naive and memory T cells play a pivotal role in solid tumor pathogenesis but their role in pancreatic cancer progression remains elusive. Thus, we aimed to investigate their clinical potential in advanced pancreatic cancer (APC). Methods: Flow cytometry was performed to evaluate the level of peripheral naive and memory T cells from APC patients. Interrelationships between naive, memory T cells and clinicopathological variables were evaluated using pearson’s correlation. The prognostic impact of naive and memory T cells were assessed by Kaplan-Meier analysis and Cox regression. The correlation between naive/memory T cells and tumor progression was investigated by Student’s t test. Results: CD4+ naive/memory ratio showed close correlations with hemoglobin, red blood cell (RBC), absolute neutrophil count (ANC) and platelet while CD8+ naive/memory ratio was correlated with hemoglobin, RBC and CEA. Higher baseline lever of CD4+CD45RO+/CD4+ was correlated with better overall survival (OS) (P = 0.036). Patients with CD4+ naive/memory ratio ≥ 0.36 had a poorer OS than those with CD4+ naive/memory ratio < 0.36 (P = 0.021). In addition, CD4+ naive/memory ratio showed independent prognostic impact (HR 1.427, 95%CI 1.033-1.973, P = 0.031). Furthermore, poorer clinical response was correlated with higher level of CD8+ naive/memory ratio after the third cycle of chemotherapy (P = 0.01). Besides, patients with an low level of CD8+ naive/memory ratio had longer progression-free survival (PFS) (P = 0.028). Conclusions: We propose CD4+ naive/memory ratio as a novel prognostic biomarker for APC. In addition, CD8+ naive/memory ratio can be a candidate marker for predicting PFS and the change of its level may reflect the progression of APC." @default.
- W2912889886 created "2019-02-21" @default.
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- W2912889886 date "2019-02-01" @default.
- W2912889886 modified "2023-10-18" @default.
- W2912889886 title "The clinical implication of CD45RA+ naive T cells and CD45RO+ memory T cells in advanced pancreatic cancer: A proxy for tumor biology and outcome prediction." @default.
- W2912889886 doi "https://doi.org/10.1200/jco.2019.37.4_suppl.196" @default.
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