Abstract:
:Anal squamous cell carcinomas are predominantly associated with high-risk human papillomaviruses (HPVs), particularly HPV 16, similar to cervical, vaginal and vulvar cancers. Although the presence of "low-risk" HPVs, in particular genotypes 6 and 11, have occasionally been reported in various HPV-related anogenital cancers, the overall distribution of these genotypes in the anal canal and perianal tissue may differ to that in the cervix. In addition, although the majority of anal and perianal cancers are associated with HPV, some are not; hence, confirmation of direct association of the virus within a lesion is important. Using laser capture microdissection, anal and perianal invasive carcinomas and high-grade squamous intraepithelial lesions (HSILs) in biopsies previously associated with HPV 6 or 11 alone were isolated from tissue sections and HPV genotype tested. Of seven cases tested, four invasive carcinomas were positive for HPV 6 only, one invasive carcinoma was negative for HPV and two HSILs were positive for HPV 11 only. All samples were confirmed as HPV 16/18 negative using two different DNA targets (E6 and L1). From these results, we confirm that HPV 6 and 11 can occasionally be associated with high-grade lesion and anal cancer.
journal_name
Int J Cancerjournal_title
International journal of cancerauthors
Cornall AM,Roberts JM,Garland SM,Hillman RJ,Grulich AE,Tabrizi SNdoi
10.1002/ijc.28228subject
Has Abstractpub_date
2013-11-01 00:00:00pages
2253-8issue
9eissn
0020-7136issn
1097-0215journal_volume
133pub_type
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