Abstract
Purpose
To determine the sensitivity and specificity of serum Cyr61 as a potential biomarker for the diagnosis of colorectal cancer (CRC) and to assess the association between serum Cyr61 level and CRC clinicopathological status.
Methods
We used an enzyme-linked immunosorbent assay to measure serum Cyr61 in patients with CRC, patients with colorectal adenomas, and healthy controls. We also analyzed the relationship between serum Cyr61 and clinicopathological features of CRC patients. The levels of serum carcinoembryonic antigen (CEA) and carbohydrate antigen 19-9 (CA19-9) were quantified using the Roche Cobas 6000 Analyzer. The sensitivity and specificity of Cyr61, CEA, CA19-9 and CEA + CA19-9 were evaluated by receiver operating characteristic (ROC) analysis.
Results
The serum level of Cyr61 was significantly increased in CRC patients compared with colorectal adenoma patients and healthy controls (p < 0.001). Furthermore, the area under the ROC curve for Cyr61 was 0.935 (95 % confidence interval 0.902–0.968), higher than that for CEA + CA19-9 (0.827, 95 % confidence interval: 0.783–0.871). Use of a Cyr61 cutoff value of 92.0 pg/mL allowed distinguishing CRC patients and healthy controls with a sensitivity of 83 % and a specificity of 97 %. Among CRC patients, an elevated level of serum Cyr61 was significantly associated with more advanced TNM stage (p < 0.0042), lymph node metastasis (p < 0.0088), and vascular invasion (p = 0.0027).
Conclusion
Cyr61 has potential as a serum biomarker for the diagnosis of CRC and for assessment of the clinicopathological status of CRC.
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Acknowledgments
This work was supported by Natural Science Foundation of Fujian Province (2015J01400, 2016J01569).
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Informed consent was obtained from all individual participants included in the study.
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All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
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Y. F. Song and Z. B. Xu contributed equally to this work.
B. Song and Q. Lin both corresponding authors contributed equally to this work.
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Song, Y.F., Xu, Z.B., Zhu, X.J. et al. Serum Cyr61 as a potential biomarker for diagnosis of colorectal cancer. Clin Transl Oncol 19, 519–524 (2017). https://doi.org/10.1007/s12094-016-1560-7
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DOI: https://doi.org/10.1007/s12094-016-1560-7