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Chinese Journal of Lung Diseases(Electronic Edition) ›› 2017, Vol. 10 ›› Issue (06): 686-689. doi: 10.3877/cma.j.issn.1674-6902.2017.06.011

Special Issue:

• Original Article • Previous Articles     Next Articles

Value of plasma free DNA in the diagnosis of non-small cell lung cancer

Jie Du1,(), Yongjie Sui1, Hongyan Li1, Shuili Wang1   

  1. 1. Medical examination center, Shanxi Provincial People′s Hospital, Xi′an 710068, China
  • Received:2017-07-16 Online:2017-12-20 Published:2017-12-20
  • Contact: Jie Du
  • About author:
    Corresponding author: Du Jie, Email:

Abstract:

Objective

To evaluate the value of plasma free DNA in the diagnosis of non-small cell lung cancer (NSCLC).

Methods

Plasma was collected from 116 patients with non-small cell lung cancer admitted to respiratory department, and 120 healthy subjects from Medical examination center, Shanxi Provincial People′s Hospital. Plasma free DNA was extracted and detected by fluorescence quantitative polymerase chain reaction, PCR.

Results

The plasma free DNA level of healthy people was (18.65±6.30) ng/ml, and the plasma free DNA level in patients with non-small cell lung cancer was (200.70±88.54) ng/ml, the difference was statistically significant(P<0.01). The plasma free DNA content of stage Ⅰ/Ⅱ non-small cell lung cancer was (172.75±72.87) ng/ml, and the plasma circulating DNA content in stage Ⅲ/Ⅳ non-small cell lung cancer was (221.88±93.86) ng/ml, (P<0.05). There was no significant correlation between sex, age, smoking status and histological type (P>0.05).

Conclusion

Plasma circulating DNA is a potentially valuable biomarker that may be an effective tool for early diagnosis and clinical staging of non-small cell lung cancer.

Key words: Non-small cell lung cancer, Plasma free DNA, Early diagnosis, Tumor marker

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