We aimed to detect the levels of T-lympho-cyte subsets and serum tumour markers in patients with non-small cell lung cancer (NSCLC) before chemotherapy, and to investigate the predictive value of their combined detection for the prognosis of NSCLC patients undergoing chemotherapy. The clinical data of 110 NSCLC patients treated with chemotherapy from January 2019 to February 2021 were analysed retrospectively. All patients were followed up for one year and divided into good prognosis group (surviving cases) and poor prognosis group (deceased cases). The predictive value of T-lymphocyte subsets combined with serum tumour markers for prognosis was analysed. The proportions of patients with tumour-node-metastasis stages III-IV, lymph node metastasis and poor differentiation were higher in the poor prognosis group than those in the good prognosis group (P < 0.05). Cox regression analysis revealed that high expression of CD4+ and CEA represented protective factors for poor prognosis of NSCLC patients undergoing chemotherapy [odds ratio (OR) < 1, P < 0.05], while high expression of CA125 was a risk factor (OR > 1, P < 0.05). All the areas under the receiver operating characteristic curves of single indicator detection (CD4+, CEA and CA125 levels) and their combined detection for prediction of the poor prognosis of NSCLC patients undergoing chemotherapy were > 0.70, which was highest in the case of combined detection. T-lymphocyte subsets and serum tumour markers are closely related to the prognosis of NSCLC patients undergoing chemotherapy, and their combined detection is of high predictive value.

Laboratory Department Yiwu Central Hospital China

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