Abstract
Background
In cervical cancer screening programs, women with abnormal cytology are referred for colposcopy for histological evaluation. We examined whether a human papillomavirus (HPV) genotyping assay could be used to identify women who do not need immediate colposcopy and biopsy because of low risk of cervical intraepithelial neoplasia grade 3 or worse (CIN3+).
Methods
We prospectively evaluated test performance for 2 carcinogenic HPV genotypes (HPV16/18), for 8 types (HPV16/18/31/33/35/45/52/58), and for 13 types (HPV16/18/31/33/35/45/51/52/56/58/59/68) for prediction of histological CIN3+ results among 427 screen-positive women referred for colposcopy. The study subjects consisted of 214 women with low-grade squamous intraepithelial lesion (LSIL), 184 with high-grade squamous intraepithelial lesion (HSIL), and 29 with atypical squamous cells, cannot exclude HSIL (ASC-H).
Results
Among women with LSIL cytology, HPV16/18 positivity was 29.4 % and increased to 58.9 % for 8 types and to 74.8 % for 13 types (P < 0.001). The risk of CIN3+ biopsy results was still 7.9 % for women testing negative for HPV16/18, but decreased to 0.0 % for those testing negative for at least eight types of HPV (HPV16/18/31/33/35/45/52/58). Although HPV genotyping results enabled additional risk stratification among women with HSIL/ASC-H cytology, the risk of histological CIN3+ diagnosis among women testing negative for eight types or more was still sufficiently high (>35 %) to warrant immediate colposcopy referral.
Conclusions
Of women with LSIL cytology, those testing negative for at least eight of the highest-risk types of HPV (HPV16/18/31/33/35/45/52/58) may not need immediate colposcopy and biopsy. This would reduce the number of colposcopy referrals by approximately 40 %. However, the HPV genotyping assay is not likely to alter the clinical management of women with HSIL/ASC-H.
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Acknowledgments
The authors thank Chizuko Fukui and Yoko Kuno, for technical assistance, Kokoro Hirai and Chieko Abe, for assistance with data collection, many other researchers who facilitated this study, and all the women who participated as study subjects. This work was supported by grants from the Ministry of Education, Science, Sports and Culture of Japan (grants #25462585 and #24791682) and the Ibaraki Clinical and Epidemiological Cancer Research Project. The supporting organizations were not involved in the design and implementation of the study, in collection, management, analysis, and interpretation of the data, or in preparation, review, or approval of the manuscript.
Conflict of Interest
KM has received lecture fees from Sekisui Medical Co., Ltd, Hologic Japan, Inc., Japan Vaccine Co., Ltd, GlaxoSmithKline K.K., and MSD K.K., and advisory fees from Hologic Japan, Inc. HY has received lecture and advisory fees from Japan Vaccine Co., Ltd, GlaxoSmithKline K.K., and MSD K.K.
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Nakamura, Y., Matsumoto, K., Satoh, T. et al. HPV genotyping for triage of women with abnormal cervical cancer screening results: a multicenter prospective study. Int J Clin Oncol 20, 974–981 (2015). https://doi.org/10.1007/s10147-015-0789-4
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DOI: https://doi.org/10.1007/s10147-015-0789-4