Abstract
Aim To estimate relative contribution and time trends of HPV types in cervical cancer in Cali, Colombia over a 50 years' period. Paraffin blocks of 736 cervical cancer histological confirmed cases were retrieved from the pathology laboratory at Hospital Universitario del Valle (Cali, Colombia) and HPV genotyped using SPF10-PCR/DEIA/LiPA25 (version 1) assay. Marginal effect of age and year of diagnosis in secular trends of HPV type prevalence among HPV+ cases were assessed by robust Poisson regression analysis. 64.7% (95%CI: 59.9-69.2) of squamous cell carcinomas (SCCs) were attributed to HPV 16 and 18, 78.2% (95%CI: 74-82) to HPV 16, 18, 31, 33 and 45 and 84.8% (95%CI: 81-88.1) to HPV 16, 18, 31, 33, 45, 52 and 58 while ninety-three percent of adenocarcinomas (ADCs) were attributed to HPV 16, 18 and 45 only. The prevalence of specific HPV types did not change over the 50-year period. A significant downward trend of prevalence ratios of HPV16 (P=0.017) and α7 but HPV 18 (i.e., HPV 39, 45, 68, 70, P=0.024) with increasing age at diagnosis was observed. In contrast, the prevalence ratio to other HPV genotypes of α9 but HPV 16 genotypes (i.e., HPV 31, 33, 35, 52, 58, 67, P=0.002) increased with increasing age at diagnosis. No ch...Continue Reading
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