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  • Title: Comparison of real-time multiplex human papillomavirus (HPV) PCR assays with INNO-LiPA HPV genotyping extra assay.
    Author: Else EA, Swoyer R, Zhang Y, Taddeo FJ, Bryan JT, Lawson J, Van Hyfte I, Roberts CC.
    Journal: J Clin Microbiol; 2011 May; 49(5):1907-12. PubMed ID: 21068278.
    Abstract:
    Real-time type-specific multiplex human papillomavirus (HPV) PCR assays were developed to detect HPV DNA in samples collected for the efficacy determination of the quadrivalent HPV (type 6, 11, 16, and 18) L1 virus-like particle (VLP) vaccine (Gardasil). Additional multiplex (L1, E6, and E7 open reading frame [ORF]) or duplex (E6 and E7 ORF) HPV PCR assays were developed to detect high-risk HPV types, including HPV type 31 (HPV31), HPV33, HPV35, HPV39, HPV45, HPV51, HPV52, HPV56, HPV58, and HPV59. Here, we evaluated clinical specimen concordance and compared the limits of detection (LODs) between multiplex HPV PCR assays and the INNO-LiPA HPV Genotyping Extra assay, which detects 28 types, for the 14 HPV types common to both of these methods. Overall HPV detection agreement rates were >90% for swabs and >95% for thin sections. Statistically significant differences in detection were observed for HPV6, HPV16, HPV18, HPV35, HPV39, HPV45, HPV56, HPV58, and HPV59 in swabs and for HPV45, HPV58, and HPV59 in thin sections. Where P was <0.05, discordance was due to detection of more HPV-positive samples by the multiplex HPV PCR assays. LODs were similar for eight HPV types, significantly lower in multiplex assays for five HPV types, and lower in INNO-LiPA for HPV6 only. LODs were under 50 copies for all HPV types, with the exception of HPV39, HPV58, and HPV59 in the INNO-LiPA assay. The overall percent agreement for detection of 14 HPV types between the type-specific multiplex HPV PCR and INNO-LiPA genotyping assays was good. The differences in positive sample detection favored multiplex HPV PCR, suggesting increased sensitivity of HPV DNA detection by type-specific multiplex HPV PCR assays.
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