期刊
HUMAN PATHOLOGY
卷 51, 期 -, 页码 64-74出版社
W B SAUNDERS CO-ELSEVIER INC
DOI: 10.1016/j.humpath.2015.12.021
关键词
p16; Immunohistochemistry; HPV; Anogenital; Oropharyngeal; Squamous cell carcinoma; Gynecologic
类别
The p16 tumor suppressor gene (CDKN2A) is a member of the INK4 class of cell cycle inhibitors and is located on chromosome 9p21. The p16 protein binds to cyclin-dependent kinases 4 and 6 and maintains the retinoblastoma gene product in its hypophosphorylated state, which in turn binds to E2F transcription factor and prevents cell cycle progression. Expression of p16 protein is increased in aging cells. Immunohistochemistry for pl6ink4a is most widely used as a surrogate maker for high-risk human papilloma virus infection in formalin-fixed, paraffin-embedded tissues. The most widely researched, accepted, and practiced use of p16 immunostain is in the lower anogenital tract. In addition, p16 immunostain is widely used for oropharyngeal squamous cell carcinoma. Its applications have also been extended to gynecologic tumors, which are unrelated to human papillomavirus. This article aims to review the literature on the diagnostic utility of p16 immunohistochemistry and highlight the practical issues in the application and interpretation of this stain. (C) 2016 Elsevier Inc. All rights reserved.
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