Human papillomavirus genotypes in human immunodeficiency virus-positive patients with anal pathology in Madrid, Spain
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2013-12-10
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BMC Spirnger Nature
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Background: We studied anal specimens to determine the distribution of human papillomavirus (HPV) genotypes
and co-infection occurrence. This information will contribute to the knowledge of HPV genotype distributions and
provide an estimate of the prevalence of different oncogenic HPV genotypes found in patients in Madrid (Spain).
Methods: We studied a total of 82 anal biopsies from the Hospital General Universitario Gregorio Marañón of
Madrid. These included 4 specimens with benign lesions, 52 specimens with low-grade anal squamous intraepithelial
lesion, 24 specimens with high-grade anal squamous intraepithelial lesions and 2 specimens with invasive anal
carcinoma. HPV genotyping was performed with PCR amplification and reverse dot blot hybridization.
Results: We detected 33 different HPV genotypes, including 16 HPVs associated with a high risk of carcinogenesis, 3
HPVs associated with a highly likely risk of carcinogenesis and 14 HPVs associated with a low-risk of carcinogenesis. In
two specimens, an uncharacterized HPV genotype was detected. The most frequent HPV genotypes found were
HPV-16 (10.3%; 95% CI: 6.6%-15.1%), HPV-52 (8.5%; 95% CI: 5.2%-13%) and HPV-43/44 (7.6%; 95% CI: 4.5%-11.9%).
HPV-18 was only detected in 0.9% (95% CI: 0.1%-3.2%) of the total viruses detected in all lesions. HPV co-infections
were found in 83.9% of all types of lesions. The majority of cases (90.2%) were concomitantly infected with the human
immunodeficiency virus (HIV).
Conclusion: The prevalence of high-risk carcinogenic genotypes in anal pathological samples was remarkable. Therefore,
further studies that include a greater number of samples, particularly invasive carcinoma cases are needed to evaluate
the potential influence of these HPV genotypes in the appearance of anal carcinomas. Also, the influence of other
accompanying infections should be evaluated clarify the appearance of this type of carcinoma.
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García-Espinosa, B., Moro-Rodríguez, E. & Álvarez-Fernández, E. Human papillomavirus genotypes in human immunodeficiency virus-positive patients with anal pathology in Madrid, Spain. Diagn Pathol 8, 204 (2013). https://doi.org/10.1186/1746-1596-8-204
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