期刊
INTERNATIONAL JOURNAL OF COLORECTAL DISEASE
卷 27, 期 3, 页码 277-286出版社
SPRINGER
DOI: 10.1007/s00384-011-1341-2
关键词
Colon cancer; Prognosis; Microsatellite; MSI; Mismatch repair; Replication error
资金
- Taipei Veterans General Hospital [V100E2-008]
- National Science Council [97-2314-B-075-051-MY3]
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. 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. 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). 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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