title: Clinical and Analytical Performance of the Onclarity HPV Assay Using the VALGENT Framework.
abstract: As the demand for human papillomavirus (HPV)-related cervical screening increases, emerging HPV tests must be evaluated robustly using well-annotated samples, such as those generated in the Validation of HPV Genotyping Tests (VALGENT) framework. Through VALGENT, we assessed the performance of the BD Onclarity HPV assay, which detects 14 high-risk (HR) types and resolves six individual types and three groups of types. Consecutive samples from a screening population (n = 1,000), enriched with cytologically abnormal samples (n = 300), that had been tested previously with the GP5+/6+ PCR enzyme immunoassay (EIA) and the GP5+/6+ PCR LMNX assay (Diassay) were tested with the Onclarity assay. Type-specific HPV prevalences were analyzed according to age and cytological result. The accuracy of the Onclarity assay for the detection of cervical intraepithelial neoplasia grade 2+ (CIN2+) and CIN3+ was assessed relative to the GP5+/6+ EIA results by using noninferiority criteria. Overall agreement and type-specific agreement between the Onclarity assay and the GP5+/6+ LMNX assay were assessed. The prevalence of HPV types 16, 18, 31, and 45 increased with the severity of cytological results (P for trend, <0.05). For the detection of CIN2+, the Onclarity assay had a relative sensitivity of 1.02 (95% confidence interval [CI], 0.99 to 1.05; P < 0.001 for noninferiority) and a relative specificity of 0.99 (95% CI, 0.97 to 1.00; P = 0.186 for noninferiority). The kappa for agreement between the Onclarity assay and the GP5+/6+ LMNX assay for HR-HPV was 0.92 (95% CI, 0.89 to 0.94), and values for the six individual types ranged from 0.78 (95% CI, 0.68 to 0.87) for HPV-52 to 0.96 (95% CI, 0.93 to 0.99) for HPV-16. These data suggest that the Onclarity assay offers applications for clinical workstreams while providing genotyping information that may be useful for risk stratification beyond types 16 and 18.
authors.affiliation: Scottish HPV Reference Laboratory, Royal Infirmary of Edinburgh, Edinburgh, United Kingdom kate.cuschieri@luht.scot.nhs.uk.
authors.forename: K
authors.initials: K
authors.lastname: Cuschieri
authors.affiliation: DDL Diagnostic Laboratory, Rijswijk, The Netherlands.
authors.forename: D T
authors.initials: DT
authors.lastname: Geraets
authors.affiliation: Scottish HPV Reference Laboratory, Royal Infirmary of Edinburgh, Edinburgh, United Kingdom.
authors.forename: C
authors.initials: C
authors.lastname: Moore
authors.affiliation: DDL Diagnostic Laboratory, Rijswijk, The Netherlands.
authors.forename: W
authors.initials: W
authors.lastname: Quint
authors.affiliation: Department of Pathology, Royal Infirmary of Edinburgh, Edinburgh, United Kingdom.
authors.forename: E
authors.initials: E
authors.lastname: Duvall
authors.affiliation: Unit of Cancer Epidemiology and Belgian Cancer Centre, Scientific Institute of Public Health, Brussels, Belgium.
authors.forename: M
authors.initials: M
authors.lastname: Arbyn
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D055088:Early Detection of Cancer / Q000379:methods*; D005260:Female; D060005:Genotyping Techniques / Q000379:methods*; D006801:Humans; D008875:Middle Aged; D027383:Papillomaviridae / Q000145:classification / Q000235:genetics / Q000302:isolation & purification*; D030361:Papillomavirus Infections / Q000150:complications / Q000175:diagnosis* / Q000821:virology; D012680:Sensitivity and Specificity; D055815:Young Adult; D002578:Uterine Cervical Dysplasia / Q000175:diagnosis* / Q000473:pathology / Q000821:virology