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Combined preoperative CEA and CD44v6 improves prognostic value in patients with stage I and stage II colorectal cancer

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Abstract

Aim

Combination of biomarkers may improve diagnosis and have better prognostic value than single markers. The purpose of this study was to investigate whether combined CEA and CD44v6 improves prognostic value in stage I and stage II (stage I/II) colorectal cancer (CRC).

Methods

Preoperative serum CEA level and the expression of CD44v6 in CRC tissues were examined by electrochemiluminescence immunoassay and immunohistochemistry, respectively. The association of CEA and CD44v6 with clinicopathological features and their possible prognostic values was analyzed.

Results

The preoperative elevated serum CEA level and positive CD44v6 expression were detected in 30.1 % (52/173) serum samples and 60.5 % (101/167) CRC tissues, respectively. Patients with an elevated-CEA level or a CD44v6-negative tumor had a worse disease-specific survival (DSS) than those with a normal-CEA level or CD44v6-positive tumor (P = 0.024, P = 0.012, respectively). Moreover, CD44v6 expression could be used in discriminating patients from good to poor prognosis in normal-CEA subgroup (P = 0.043), but not in elevated-CEA subgroup (P = 0.563). Multivariate analysis revealed that combined CEA and CD44v6 was an independent prognostic factor for patients with stage I/II CRC (P = 0.023). However, serum CEA level only retained a borderline significance for correlation with a worse DSS (P = 0.059), and CD44v6 expression alone was not an independent prognostic factor for DSS in multivariate analysis (P = 0.123).

Conclusion

These results suggested that combined CEA/CD44v6 had better prognostic value than CEA or CD44v6 alone for patients with stage I/II CRC.

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Acknowledgments

We thank Dr. Li Sun and Yiqiang Liu for histopathological diagnosis. We thank Dr. Jiabo Di for critical reading of the manuscript. This study was supported by the grants from the National Natural Science Foundation of China (No. 81272766 and No. 81071658), Capital Medical Development and Research Foundation (No. 2009-2093), Clinical Characteristics and Application Research of Capital (Beijing Municipal Science & Technology Commission No. Z121107001012130), Beijing Natural Science Foundation (No. 7132054), New Star of Science and Technology Program of Beijing (Beijing Municipal Science & Technology Commission No. 2011060).

Conflict of interest

The authors declare that they have no conflict of interest.

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Authors and Affiliations

  1. Key laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Minimally Invasive Gastrointestinal Surgery, Peking University Cancer Hospital & Institute, 52 Fucheng Road, Haidian District, Beijing, 100142, China

    L. Chen, B. Jiang, Z. Wang, M. Liu, H. Yang, J. Xing, C. Zhang, Z. Yao, N. Zhang, M. Cui & X. Su

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  1. L. Chen
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  2. B. Jiang
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  3. Z. Wang
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  4. M. Liu
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  7. C. Zhang
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  9. N. Zhang
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  11. X. Su
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Corresponding author

Correspondence to X. Su.

Additional information

L. Chen and B. Jiang contributed equally to this work.

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Chen, L., Jiang, B., Wang, Z. et al. Combined preoperative CEA and CD44v6 improves prognostic value in patients with stage I and stage II colorectal cancer. Clin Transl Oncol 16, 285–292 (2014). https://doi.org/10.1007/s12094-013-1069-2

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  • DOI: https://doi.org/10.1007/s12094-013-1069-2

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