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To explore whether methylation of the CpG island in the promoter of the p16 tumor suppressor gene was associated with clinicopathological characteristics of the colorectal cancer patients. Methods: Methylation- specific PCR (MSP) was used to detect p16 methylation of the colorectal cancer patients. Results: In 58 sporadic colorectal cancer, 43.1% of the tumors had detectable p16 methylation. Dukes' stage was associated with p16 methylation status. Dukes C, D patients (75%) were more likely to contain methylated p16 compared with Dukes A, B patients (13.3%). Conclusion: p16 methylation plays a role in the carcinogenesis of a subset of colorectal cancer. P16 methylation might be considered as a prognostic indicator.
