Wide Spectrum Analysis of HPV Genotypes in External Anogenital Warts among Hungarian Patients

Abstract

Background: External anogenital warts (EGW) are primarily associated with the low-risk Human papillomavirus (HPV) genotype 6 and 11, though coinfection with other low-risk and oncogenic high-risk HPV genotypes also occurs. Though the many studies about HPV-associated disease, the epidemiology, and the prevalence of HPV genotypes associated with EGW are not well characterized. The objective of our study was to determine the incidence of HPV genotypes in a Hungarian cohort diagnosed with EGW.Methods: A total number of 94 patients’ archived formalin-fixed paraffin-embedded (FFPE) blocks were enrolled in our retrospective study. HPV genotypes were determined, applying HPV Direct Flow Chip Test.Results: The overall prevalence of HPV DNA in EGW cases was 100%. 72.34% of the cases were mono while 27.65% were multi infections. Cumulative prevalence of HPV 6 and 11 was 98.93%; while a total of 19.4% of the cases occurred with at least one high-risk genotype. The most frequent HPV genotypes were HPV 6 (86.17%), 11 (12.76%), 42 (6.38%) followed by HPV 40, 56, 59, 66, 73 (3.19%).Conclusion: Data of our study could provide invaluable information concerning the relative frequencies of HPV types in the Hungarian population, enabling improved assessment of the actual and future efficacy of vaccination programs and forecast changes in infection patterns.