Abstract
The present study was to evaluate the value of miRNA-30a in plasma as potential tumor marker in detecting breast cancer (BC). Using a novel approach to extract miRNA-30a from the plasma followed by real-time quantitative polymerase chain reaction (RQ-PCR) analysis, levels of miRNA-30a were quantified in plasma specimens of 100 BCs and 64 age-matched and disease-free healthy controls (HC). And we compared the diagnostic value of plasma miRNA-30a with conventional circulating tumor markers CA153 and CEA. The median levels of miRNA-30a were significantly lower in preoperative BC than those in HC (P < 0.001). The levels of CEA and CA153 were all significantly higher in preoperative BC compared with those in HC (P = 0.008 and P = 0.001, respectively), and only the level of CA153 decreased in postoperative BC compared with preoperative BC (P = 0.015). ROC analysis showed the sensitivity and specificity of miRNA-30a for BC diagnosis at 74.0 and 65.6 %, respectively, whereas the sensitivities of CEA and CA153 were 12.0 and 14.0 %, respectively. The status of ER and triple-negative BC was significantly associated with miRNA-30a level (P = 0.007 and P = 0.005, respectively). And no other clinicopathological features were found to had significant difference. Our findings suggest that plasma miRNA-30a decreased in patients with BC and has great potential to use as novel biomarkers for BC diagnosis.
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Abbreviations
- HC:
-
Healthy controls
- CEA:
-
Carcinoembryonic antigen
- CA153:
-
Carbohydrate antigen 153
- TNM:
-
Tumor-node-metastasis
- AJCC:
-
American Joint Committee on Cancer
- ROC:
-
Receiver operator characteristic
- ER:
-
Estrogen receptor
- LNM:
-
Lymph node metastasis
- BC:
-
Breast cancer
- RQ-PCR:
-
Real-time quantitative polymerase chain reaction
- DCIS:
-
Ductal carcinoma in situ
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This work was supported by Wenzhou Science and Technology Bureau (Grant numbers Y20100008, Y20080081) and Health Bureau of Zhejiang Province (Grant number 2009B106).
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Zeng, Rc., Zhang, W., Yan, Xq. et al. Down-regulation of miRNA-30a in human plasma is a novel marker for breast cancer. Med Oncol 30, 477 (2013). https://doi.org/10.1007/s12032-013-0477-z
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DOI: https://doi.org/10.1007/s12032-013-0477-z