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Prognostic value of peripheral blood CD+8T lymphocytes for stage Ⅲ-Ⅳ non-small cell lung cancer patients treated with chemoradiotherapy
Wang Haojie, Wang Lixue, Ouyang Weiwei, Ma Zhu, Li Qingsong, Yang Wengang, Li Huiqin, Su Shengfa, Lu Bing
Department of Oncology, Affiliated Hospital of Guizhou Medical University, Guizhou Cancer Hospital, Teaching and Research Section of Oncology, Guiyang 550004, China
AbstractObjective To explore the changes of CD+8 T cells in stage Ⅲ-Ⅳ non-small cell lung cancer (NSCLC) patients before and after radiochemotherapy and evaluate its clinical value in predicting survival. Methods A total of 795 patients with stage Ⅲ-Ⅳ NSCLC who completed CD+8 T cell testing from January 2011 to December 2017 were recruited (249 patients completed 1-3 tests within 6 months after treatment). The survival difference of patients with different levels of CD+8 T cells and the prognostic value of the changes in the CD+8 T cell level were analyzed. The survival analysis was performed by Kaplan-Meier method and log-rank test or univariate analysis. The multivariate survival analysis was conducted by Cox’s regression model. Results Before treatment, the levels of CD+8 T cells in the peripheral blood did not significantly differ among patients with different clinical factors. The survival time of stage Ⅲ NSCLC patients with CD+8 T cell levels of<26.44% was significantly prolonged (P=0.043). After treatment, the levels of CD+8 T cells were significantly higher than those before treatment. The levels were similar within 1-3 months, decreased after 4-6 months but still significantly higher than those before treatment. The median survival time of patients with CD+8cell levels of<43.90% after treatment was 22 months, significantly longer than 16 months of those with CD+8cell levels of ≥43.90%(P=0.032). Stratified analysis demonstrated no significant difference in the survival time at 1 month and 2-3 months after treatment (P>0.05), whereas the survival time significantly differed at 4-6 months (P=0.001). The multivariate survival analysis showed that CD+8 cell levels of<43.90% after treatment was an independent prognostic factor (HR=0.714, P=0.031). Conclusions The effect of CD+8 T cells on prognosis of patients with stage Ⅲ-Ⅳ NSCLC is limited. After treatment, CD+8 T cell levels are increased significantly. A certain increase in the CD+8 T cell levels can prolong the survival time. The detection of CD+8 T cell subtypes plays a more significant role.
Corresponding Authors:
Lu Bing, Email:lbgymaaaa@163.com
Cite this article:
Wang Haojie,Wang Lixue,Ouyang Weiwei et al. Prognostic value of peripheral blood CD+8T lymphocytes for stage Ⅲ-Ⅳ non-small cell lung cancer patients treated with chemoradiotherapy[J]. Chinese Journal of Radiation Oncology, 2020, 29(10): 849-854.
Wang Haojie,Wang Lixue,Ouyang Weiwei et al. Prognostic value of peripheral blood CD+8T lymphocytes for stage Ⅲ-Ⅳ non-small cell lung cancer patients treated with chemoradiotherapy[J]. Chinese Journal of Radiation Oncology, 2020, 29(10): 849-854.
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