COMPARATIVE STUDY
JOURNAL ARTICLE

High genotyping concordance between the digene HPV Genotyping RH Test and the Reverse Line Blot genotyping assay on GP5+/6+-PCR products

D T Geraets, D A M Heideman, M N C de Koning, P J F Snijders, C J L M Meijer, L J van Doorn, W G V Quint
Journal of Clinical Virology 2009, 46 Suppl 3: S16-20
20129069

BACKGROUND: Based on epidemiologic studies, 18 mucosal human papillomavirus (HPV) types have been classified as (probably) high-risk (HR) (i.e., HPV 16, 18, 26, 31, 33, 35, 39, 45, 51, 52, 53, 56, 58, 59, 66, 68, 73, and 82). Recognition of HR HPV at the individual type level may be valuable in clinical management of HR HPV-positive women.

OBJECTIVES: The goal of this study was to evaluate the performance of the novel digene HPV Genotyping RH Test (digene RH Test), which uses type-specific probes for the 18 HR HPV genotypes, in comparison to the established in-house Reverse Line Blot (RLB) genotyping assay on PCR products generated with the clinically validated GP5+/6+-PCR method.

STUDY DESIGN: GP5+/6+ amplimers, generated from 493 digene High Risk HPV HC2 DNA Test (HC2)-positive and 95 HC2-negative cervical smears, were genotyped by both the digene RH Test and the RLB assay.

RESULTS: Both genotyping assays demonstrated high concordance for overall HR HPV detection (ú = 0.886) and type-specific identification of the 18 HR types (overall ú = 0.951, individual ú range 0.777 to 1.000) in 493 HC2-positive samples. The digene RH Test revealed positivity for one or more HR HPV type(s) in 86.6% of the HC2-positive women, and negativity was confirmed in 97.9% of the HC2-negative women.

CONCLUSIONS: The digene HPV Genotyping RH Test revealed a high genotyping agreement with the established RLB assay on GP5+/6+ amplimers. Accordingly, this assay following GP5+/6+-PCR could serve as a follow-up test in a clinical setting for women who are HC2-positive to identify the respective HR HPV genotype(s).

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