Prognostic DNA methylation marker in serum of cancer patients

Annals of the New York Academy of Sciences
Hannes M MüllerMartin Widschwendter

Abstract

Changes in the status of DNA methylation are among the most common molecular alterations in human neoplasia. Recent demonstrations of tumor-derived methylated DNA in the blood stream of cancer patients allow the use of these epigenetic markers for risk assessment in cancer patients. We were interested in evaluating the prognostic value of several methylated genes in the serum of cancer patients. Using MethyLight, a high-throughput DNA methylation assay, we analyzed 215 serum samples from patients with cervical (n = 93) or breast cancer (n = 122) for DNA methylation changes. In cervical cancer, hypermethylation of three genes (MYOD1, CDH1, and CDH13) in pretreatment sera was statistically significantly associated with a poorer disease outcome. Additionally, for the first time we used a so-called gene evaluation set to identify the most important DNA methylation changes in the serum of breast cancer patients from a long list of candidate genes. In the gene evaluation set, we detected five genes (ESR1, APC, HSD17B4, HIC1, and RASSF1A) using our criteria for further analysis. Finally, two of the evaluated genes (APC and RASSF1A) proved to be independent prognostic parameters in breast cancer patients. In summary, we detected severa...Continue Reading

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Citations

May 22, 2010·Tumour Biology : the Journal of the International Society for Oncodevelopmental Biology and Medicine·Feng JingHu Lihua
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