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Hypermethylation of promoter regions of the APC1A and p16INK4a genes in relation to prognosis and tumor characteristics in cervical cancer patients
Department of Laboratory Medicine, Clinical Chemistry and School of Health and Medicine, Örebro University, Örebro, Sweden.
2011 (English)In: International Journal of Oncology, ISSN 1019-6439, Vol. 39, no 3, 683-688 p.Article in journal (Refereed) Published
Abstract [en]

Hypermethylation of the O6-MGMT, p14ARF, p16INK4a, RASSF1A and APC1A genes are unfavourable prognostic markers in colorectal cancer (CRC). We hypothesized that they could be related to prognosis also in cervical cancer. Methylation was studied in DNA extracts from surgical specimens of cancer tissue by novel pyrosequencing methods. In 109 patients (90 squamous cell carcinomas, 19 adenocarcinomas), we found that hypermethylation of the APC1A gene promoter occurred in 8.3% of patients, and of p16INK4a in 1.8%. APC1A hypermethylation was significantly related to more advanced FIGO stage of the tumor (P=0.013), larger tumor diameter (P=0.049) and distant recurrence-free survival (P=0.0007), but not with locoregional recurrence rate, age, HPV status, DNA ploidy, tumor grade or malignancy grading score. We conclude that methylation of the APC1A promoter in cervical cancer, as diagnosed by pyrosequencing, is significantly related to major biological characteristics of the tumor, and may be a new predictor of poor prognosis in cervical cancer.

Place, publisher, year, edition, pages
2011. Vol. 39, no 3, 683-688 p.
National Category
Cancer and Oncology
Identifiers
URN: urn:nbn:se:umu:diva-79797DOI: 10.3892/ijo.2011.1078PubMedID: 21674126OAI: oai:DiVA.org:umu-79797DiVA: diva2:644885
Available from: 2013-09-02 Created: 2013-09-02 Last updated: 2017-12-06Bibliographically approved

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CiteExportLink to record
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