1. The etiologic role of human papillomavirus in penile cancers: a study in Vietnam.
- Author
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Do HT, Koriyama C, Khan NA, Higashi M, Kato T, Le NT, Matsushita S, Kanekura T, Akiba S, Do, H T T, Koriyama, C, Khan, N A, Higashi, M, Kato, T, Le, N T, Matsushita, S, Kanekura, T, and Akiba, S
- Abstract
Background: We investigated the aetiologic role of human papillomavirus (HPV) in 120 penile squamous cell carcinomas (PSCCs) from Vietnam.Methods: Human papillomavirus DNA was detected by PCR using SPF10 primers and a primer set targeting HPV-16 E6. The INNO-LiPA HPV genotyping kit was used to determine genotype. Human papillomavirus-16 viral load and physical status were determined by real-time PCR. P16(INK4A) protein expression was investigated by immunohistochemistry.Results: Human papillomavirus DNA was detected in 27 of 120 (23%) PSCCs. The most frequently detected genotype was HPV-16 (24 of 27 cases, 89%). In 16 of 18 (89%) HPV-16-positive cases, the HPV DNA was considered to be integrated into the host genome. The geometric mean of the HPV-16 viral load was 0.4 copies per cell. P16(INK4A) overexpression was significantly related to PSCCs infected with high-risk HPV (P=0.018) and HPV-16 copy numbers (P<0.001).Conclusion: Human papillomavirus-16 DNA integration and p16(INK4A) overexpression in high-risk HPV detected PSCCs suggested an aetiologic role of high-risk HPV in the development of PSCCs. [ABSTRACT FROM AUTHOR]- Published
- 2013
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