Laboratory Medicine ›› 2021, Vol. 36 ›› Issue (1): 34-38.DOI: 10.3969/j.issn.1673-8640.2021.01.007

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Diagnostic value of miR-124a and miR-449a in plasma of non-small cell lung cancer

PENG Jiaowu1, SUN Chengmou2()   

  1. 1.Department of Clinical Laboratory,Zhijiang People's Hospital,Zhijiang 443200,Hubei,China
    2.Department of Clinical Laboratory,Yiling Hospital,Yichang 443100,Hubei,China
  • Received:2020-01-12 Online:2021-01-30 Published:2021-02-05

Abstract:

Objective To explore the diagnostic value of microRNA-124a(miR-124a)and microRNA-449a(miR-449a) in non-small cell lung cancer(NSCLC). Methods Ninety patients with NSCLC who underwent surgical resection and were followed up for 36 months were assigned to NSCLC group and subdivided into relapsed group(56 cases)and non-relapsed group(34 cases). In addition,60 patients with benign lung nodules(benign nodules group) and 80 healthy persons(normal control group) were enrolled in this study. General information of all the subjects was collected. Serum neuron specific enolase(NSE),miR-124a and miR-449a levels were detected. Spearman correlation analysis was applied to evaluate the relevance of indicators. The receiver operating characteristic(ROC) curve was used to evaluate the effectiveness of the indicators in the diagnosis of NSCLC. Results Compared with those in the normal control group and benign nodule group, serum NSE was significantly increased in the NSCLC group (P<0.05),but the serum levels of miR-124a and miR-449a were significantly decreased(P<0.05). There was no statistically significant difference in serum levels of NSE,miR-124a or miR-449a between the normal control group and benign nodule group(P>0.05). Compared with those in the non-relapsed group,serum NSE of the relapsed group increased(P<0.05),while the levels of miR-124a and miR-449a decreased(P<0.05). There was no significant difference in age,gender,body mass index(BMI),smoking status,tumor diameter,pathological type and TNM stage between the two groups(P>0.05). ROC curve analysis results showed that the area under curve(AUC)of NSE,miR-124a and miR-449a for single diagnosis of NSCLC were 0.660,0.703 and 0.759,respectively. The combined detection of NSE+miR-124a+miR-449a had the highest AUC(0.895) and sensitivity(96.25%) for the diagnosis of NSCLC. The combined detection of miR-124a+miR-449a had the highest specificity(90.31%) for the diagnosis of NSCLC. Conclusion miR-124a and miR-449a may be used as auxiliary diagnostic indicators for NSCLC.

Key words: MicroRNA-124a, MicroRNA-449a, Neuron specific enolase, Non-small cell lung cancer

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