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Routine genotyping of human papillomavirus samples in Denmark

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Johnson T, Bryder K, Corbet S and Fomsgaard A. Routine genotyping of human papillomavirus samples in Denmark. APMIS 2003;111:398–404.

In order to examine a sensitive unbiased consensus PCR with routine sequencing for HPV typing, we analysed Danish male and female patients suspected of having an HPV infection. We used the well-characterised nested PCR setting with MY09/MY11 and GP5+/GP6+ primers, followed by routine cycle sequencing. Of 1,283 clinical samples from female patients based on suspected HPV infection, we found 379 (29%) negatives and 894 (70%) positives. Samples containing >5000 HPV copies/ml were genotyped by sequencing. Of the 552 HPV genotyped samples from women >15 years of age, 398 were characterised as high-risk types and the remaining 154 as low-risk types. The most commonly found high-risk types were HPV-16, HPV-31, HPV-33, HPV-18, HPV-58, and HPV-52, and the most commonly found low-risk types were HPV-6, HPV-53 and HPV-11. In addition, we observed that other typing assays could not perform as sensitively or accurately as the nested PCR/cycle sequencing method used in this study. For instance, 87 out of 552 genotyped samples could not have been typed correctly in the Hybrid Capture II assay. Of these 87 samples, 46 (53%) were considered as high-risk types.

Keywords: HPV; genotyping; nested-PCR

Document Type: Research Article


Affiliations: Department of Virology, Statens Serum Institut, Copenhagen, Denmark

Publication date: March 1, 2003


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