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Dedifferentiated adenoid cystic carcinoma is an extremely rare and highly aggressive tumor. We describe the first reported case of dedifferentiated adenoid cystic carcinoma of the trachea and analyze the expression profiles of mammalian target of rapamycin pathway proteins. A 66-year-old Japanese man was incidentally found to have stenosis of the trachea, and a bronchial biopsy revealed low-grade...
The alteration of DNA methylation is one of the most common epigenetic changes in human cancers. Three genes, namely, DNA methyltransferase 1, 3a, and 3b, which code for DNA methyltransferases that affect promoter methylation status, are thought to play an important role in the development of cancers and may be good anticancer therapy targets. The methylation of tumor suppressor genes has been reported...
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