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Clinicopathologic features and prognostic analysis of MSI-high colon cancer

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International Journal of Colorectal Disease Aims and scope Submit manuscript

Abstract

Purpose

The objectives of the study were to estimate the incidence and clarify the clinicopathologic feature of sporadic microsatellite instability (MSI)-high (MSI-H) colon cancer. Furthermore, the role of MSI in colon cancer prognosis was also investigated.

Methods

Microsatellite status was identified by genotyping. The clinicopathologic differences between two groups (MSI-H vs. MSI-L/S) and the prognostic value of MSI were analyzed.

Results

From 1993 to 2006, 709 sporadic colon cancer patients were enrolled. MSI-H colon cancers showed significant association with poorly differentiated (28.3% vs. 7.2%, p = 0.001), proximally located (76.7% vs. 34.5%, p = 0.001), more high mucin-containing tumor (10.0% vs. 5.1%, p = 0.001) and female predominance (56.7% vs. 30.2%, p = 0.001). In multivariate analysis, MSI-H is an independent factor for better overall survival (HR, 0.459; 95% CI, 0.241–0.872, p = 0.017).

Conclusions

Based on the hospital-based study, MSI-H colon cancers demonstrated distinguished clinicopathologic features from MSI-L/S colon cancers. MSI-H is an independent favorable prognostic factor for overall survival in colon cancer.

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Acknowledgments

We thank the Cancer Registry of Cancer Center, Taipei Veterans General Hospital for providing part of patient follow-up information. The research was supported by Taipei Veterans General Hospital: V100E2-008 and National Science Council 97-2314-B-075-051-MY3

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Correspondence to Shih-Ching Chang.

Additional information

Chun-Chi Lin and Yi-Ling Lai equally contributed to this study.

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Lin, CC., Lai, YL., Lin, TC. et al. Clinicopathologic features and prognostic analysis of MSI-high colon cancer. Int J Colorectal Dis 27, 277–286 (2012). https://doi.org/10.1007/s00384-011-1341-2

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  • DOI: https://doi.org/10.1007/s00384-011-1341-2

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