HPV Extended Genotyping to Triage Abnormal Cervical Cancer Screens—Balancing the Harms and Benefits of an Additional Triage Test before Direct Colposcopy Referral

Author:

Gottschlich Anna123ORCID,Smith Laurie W.14ORCID,Proctor Lily156ORCID,Ogilvie Gina S.15ORCID

Affiliation:

1. Women’s Health Research Institute, BC Women’s Hospital and Health Services, Vancouver, Canada. 1

2. Department of Oncology, Wayne State University, Detroit, Michigan. 2

3. Population Sciences and Disparities Research Program, Barbara Ann Karmanos Cancer Institute, Detroit, Michigan. 3

4. Cancer Control Research, BC Cancer, Vancouver, Canada. 4

5. Faculty of Medicine, University of British Columbia, Vancouver, Canada. 5

6. British Columbia Cervix Screening Program, BC Cancer, Vancouver, Canada. 6

Abstract

Abstract The Netherlands’ cervical cancer screening program transitioned to primary human papillomavirus (HPV) screening in 2017. After the introduction of HPV-based screening, the country saw increases in colposcopy referral rates and detections of low-grade lesions. In July 2022, genotyping was introduced, and those with borderline or mild dyskaryotic (BMD) cytologic abnormalities were only referred to colposcopy if positive for HPV type 16 or 18, and repeat screening otherwise. In this article, various strategies using extended genotyping (HPV16/18/31/33/45/52/58) as a triage test after an abnormal screen were explored using data from HPV-positive participants with normal or BMD cytology in the Population-Based Screening Study Amsterdam (POBASCAM) trial. The authors assessed positive and negative predictive values and colposcopy referral rates for each strategy using extended genotyping to triage women to either direct referral to colposcopy or repeat screening. Direct referral did not meet positive and negative predictive value thresholds for efficiency for any strategies. However, the authors note that direct referral may nonetheless be useful among those with BMD due to minimal increases in colposcopy referrals and concerns of loss to follow-up at repeat screening. These findings demonstrate the potential utility of extended genotyping as a triage test in primary HPV screening programs. The results should be considered alongside the fact that referral to repeat screening may result in loss of engagement of women who need treatment to prevent invasive cancer. See related article by Kroon et al., p. 1037

Publisher

American Association for Cancer Research (AACR)

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