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Martinelli M, Latsuzbaia A, Bonde J, Pedersen H, Iacobone AD, Bottari F, Piana AF, Pietri R, Cocuzza CE, Arbyn M. Performance of BD Onclarity HPV assay on FLOQSwabs vaginal self-samples. Microbiol Spectr 2024; 12:e0287223. [PMID: 38323823 PMCID: PMC10913526 DOI: 10.1128/spectrum.02872-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Accepted: 01/02/2024] [Indexed: 02/08/2024] Open
Abstract
This study assessed the accuracy of high-risk human papillomavirus testing of BD Onclarity HPV (Onclarity) assay on vaginal self-collected FLOQSwab versus cervical samples to ensure similar accuracy to detect cervical intraepithelial neoplasia. Testing was performed on two automated platforms, BD Viper LT and BD COR, to evaluate the effect of machine and using two vaginal self-samples to analyze the influence of collection, transport, and freezing-unfreezing on the results. A cervical sample and two self-samples were collected from 300 women. The first collected vaginal and the cervical sample were tested on BD Viper LT, and the second swab was frozen and subsequently tested on both automated systems. Test results on vaginal and cervical specimens were considered the index and comparator, respectively; colposcopy and histology were reference standards. Relative sensitivity for ≥CIN2 on vaginal samples analyzed versus the cervical sample was 1.01 (0.97-1.06), 1.01 (0.97-1.06), and 1.00 (0.95-1.05), for the first, second self-collected sample tested on BD VIPER LT, and second self-collected sample tested on BD COR, respectively. Relative specificity was 0.83 (0.73-0.94), 0.76 (0.67-0.87), and 0.82 (0.73-0.92) using the three different workflows. Cut-off optimization for human papillomavirus (HPV) positivity defined at Ct ≤38.3 for HPV16, ≤ 34.2 for HPV18, and ≤31.5 for all other types showed an increased relative specificity with similar sensitivity. No significant difference was observed between self-samples tested with the two platforms and between first- and second-collected swabs. Onclarity assay on FLOQSwab using both platforms showed similar sensitivity but lower specificity to detect ≥CIN2 compared to cervical samples. By cut-off optimization, non-inferior specificity could be reached. IMPORTANCE Human papillomavirus (HPV) testing on self-collected vaginal samples has been shown to improve women's participation to cervical cancer screening programs, particularly in regions with limited access to health care. Nevertheless, the introduction of self-sampling in cervical cancer screening programs requires prior clinical validation of the HPV assay in combination with a self-sample collection device, including also the laboratory workflow and automation required for high-throughput testing in screening. In this study, the performance of BD Onclarity HPV on FLOQSwab-collected vaginal self-samples has been compared to clinician-taken liquid-based cytology samples, to detect high-grade cervical intraepithelial neoplasia using two high-throughput platforms, BD Viper LT and BD COR. The study findings have shown a similar performance of BD Onclarity on testing self-collected samples, confirming the validation of the proposed pre-analytical and analytical protocols for their use in cervical cancer screening programs based on self-collected vaginal samples.
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Affiliation(s)
- Marianna Martinelli
- Department of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy
| | - Ardashel Latsuzbaia
- Unit of Cancer Epidemiology, Belgian Cancer Centre, Sciensano, Brussels, Belgium
| | - Jesper Bonde
- Department of Pathology, Molecular Pathology Laboratory, Copenhagen University Hospital, AHH-Hvidovre Hospital, Hvidovre, Denmark
| | - Helle Pedersen
- Department of Pathology, Molecular Pathology Laboratory, Copenhagen University Hospital, AHH-Hvidovre Hospital, Hvidovre, Denmark
| | - Anna D. Iacobone
- Preventive Gynecology Unit, European Institute of Oncology IRCCS, Milan, Italy
| | - Fabio Bottari
- Division of Laboratory Medicine, European Institute of Oncology IRCCS, Milan, Italy
| | - Andrea F. Piana
- Department of Medicine, Surgery and Pharmacy, University of Sassari, Sassari, Italy
| | - Roberto Pietri
- U.O. Coordinamento Consultori Familiari, ASSL Sassari – ATS Sardegna, Sassari, Italy
| | | | - Marc Arbyn
- Unit of Cancer Epidemiology, Belgian Cancer Centre, Sciensano, Brussels, Belgium
- Department of Human Structure and Repair, Faculty of Medicine and Health Sciences, University Ghent, Ghent, Belgium
| | - Extended Valhudes Study GroupGiubbiChiara1Brask SonneSi2Korsgaard AndreaseEmilie2MartellaSilvia3PretiEleonora Petra3GuerrieriMaria Elena3PasseriniRita4MuresuNarcisa5SechiIllari5DettoriArianna5GhiMaria Eugenia6BagellaMaria Paola6MarrazzuAdriano6Department of Medicine and Surgery, University of Milano-Bicocca, Monza, ItalyDepartment of Pathology, Molecular Pathology Laboratory, Copenhagen University Hospital, Hvidovre, DenmarkPreventive Gynecology Unit, European Institute of Oncology IRCCS, Milan, ItalyDivision of Laboratory Medicine, European Institute of Oncology IRCCS, Milan, ItalyDepartment of Medicine, Surgery and Pharmacy, University of Sassari, Sassari, ItalyU.O. Coordinamento Consultori Familiari, ASSL Sassari – ATS Sardegna, Sassari, Italy
- Department of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy
- Unit of Cancer Epidemiology, Belgian Cancer Centre, Sciensano, Brussels, Belgium
- Department of Pathology, Molecular Pathology Laboratory, Copenhagen University Hospital, AHH-Hvidovre Hospital, Hvidovre, Denmark
- Preventive Gynecology Unit, European Institute of Oncology IRCCS, Milan, Italy
- Division of Laboratory Medicine, European Institute of Oncology IRCCS, Milan, Italy
- Department of Medicine, Surgery and Pharmacy, University of Sassari, Sassari, Italy
- U.O. Coordinamento Consultori Familiari, ASSL Sassari – ATS Sardegna, Sassari, Italy
- Department of Human Structure and Repair, Faculty of Medicine and Health Sciences, University Ghent, Ghent, Belgium
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Chua B, Lim LM, Ng JSY, Ma Y, Wee HL, Caro JJ. Cost-Effectiveness Analysis of HPV Extended versus Partial Genotyping for Cervical Cancer Screening in Singapore. Cancers (Basel) 2023; 15:1812. [PMID: 36980698 PMCID: PMC10046888 DOI: 10.3390/cancers15061812] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 03/13/2023] [Accepted: 03/14/2023] [Indexed: 03/19/2023] Open
Abstract
Human papillomavirus (HPV) partial genotyping (PGT) identifies HPV16 and HPV18 individually, alongside 12 other high-risk HPV genotypes (hrHPV) collectively. HPV extended genotyping (XGT) identifies four additional hrHPV individually (HPV31, 45, 51, and 52), and reports the remaining eight in three groups (HPV33|58; 56|59|66; 35|39|68). Quality-adjusted life years (QALY), health care resource use, and costs of XGT were compared to PGT for cervical cancer screening in Singapore using DICE simulation. Women with one of the three hrHPV identified by XGT (HPV35|39|68; 56|59|66; 51), and atypical squamous cells of undetermined significance (ASCUS) on cytology, are recalled for a repeat screening in one year, instead of undergoing an immediate colposcopy with PGT. At the repeat screening, the colposcopy is performed only for persistent same-genotype infections in XGT, while with PGT, all the women with persistent HPV have a colposcopy. Screening 500,122 women, aged 30-69, with XGT, provided an incremental cost-effectiveness ratio (ICER) versus PGT of SGD 16,370/QALY, with 7130 (19.4%) fewer colposcopies, 6027 (7.0%) fewer cytology tests, 9787 (1.6%) fewer clinic consultations, yet 2446 (0.5%) more HPV tests. The XGT ICER remains well below SGD 100,000 in sensitivity analyses, (-SGD 17,736/QALY to SGD 50,474/QALY). XGT is cost-effective compared to PGT, utilizes fewer resources, and provides a risk-based approach as the primary cervical cancer screening method.
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Affiliation(s)
- Brandon Chua
- Saw Swee Hock School of Public Health, National University of Singapore, 12 Science Drive 2, Singapore 117549, Singapore
- Health Economics and Outcomes Research, Becton Dickinson Holdings Pte. Ltd., 2 International Business Park Road, The Strategy #08-08, Singapore 609930, Singapore
| | - Li Min Lim
- Division of Gynaecologic Oncology, Department of Obstetrics and Gynecology, National University Hospital, 5 Lower Kent Ridge Rd., Singapore 119074, Singapore
| | - Joseph Soon Yau Ng
- Division of Gynaecologic Oncology, Department of Obstetrics and Gynecology, National University Hospital, 5 Lower Kent Ridge Rd., Singapore 119074, Singapore
| | - Yan Ma
- Health Economics and Outcomes Research, Becton Dickinson Holdings Pte. Ltd., 2 International Business Park Road, The Strategy #08-08, Singapore 609930, Singapore
| | - Hwee Lin Wee
- Saw Swee Hock School of Public Health, National University of Singapore, 12 Science Drive 2, Singapore 117549, Singapore
- Department of Pharmacy, National University of Singapore, 18 Science Drive 4, Singapore 117543, Singapore
| | - J. Jaime Caro
- Saw Swee Hock School of Public Health, National University of Singapore, 12 Science Drive 2, Singapore 117549, Singapore
- School of Global and Population Health, McGill University, Suite 1200, 2001 McGill College Avenue, Montréal, QC H3A 1G1, Canada
- Department of Health Policy, London School of Economics and Political Science, Houghton Street, London WC2A 2AE, UK
- Evidera, 500 Totten Pond Rd., Waltham, MA 02451, USA
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Validation of a New High-Throughput BD COR System Using the BD CTGCTV2 Assay. J Mol Diagn 2022; 24:485-493. [PMID: 35304346 DOI: 10.1016/j.jmoldx.2022.01.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 12/21/2021] [Accepted: 01/12/2022] [Indexed: 11/23/2022] Open
Abstract
This study determined the precision and reproducibility of results for the BD CTGCTV2 (CTGCTV2) assay on the BD COR System (COR). The clinical performance of the CTGCTV2 assay conducted on COR was compared with its performance on the BD MAX System (MAX) for detecting Chlamydia trachomatis, Neisseria gonorrhoeae, or Trichomonas vaginalis. The multiday precision and multisite reproducibility studies were conducted using contrived panels of positive and negative urine and PreservCyt specimens. A total of 433 panel members, generated from remnant clinical specimens, were tested in the clinical comparison study. Each panel member was tested three times on MAX and three times on COR. The results in the same testing group were compared for agreement by target. The cycle threshold scores from MAX and COR were analyzed by paired t-test and Deming regression. The CTGCTV2 assay on COR showed high reproducibility in the multiday and multisite precision analysis. The point estimates of positive percent agreement and negative percent agreement in the clinical comparison study for all three targets were greater than 95%, with all corresponding lower bounds of two-sided 95% CIs greater than 90%. Cycle threshold score comparison showed no systematic difference between the two systems. The results of this study show equivalent performance of the CTGCTV2 assay on the MAX and COR systems.
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