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J Clin Virol. 2016 Mar;76 Suppl 1:S49-S55. doi: 10.1016/j.jcv.2015.11.015. Epub 2015 Nov 28.

Triage of HPV positive women in cervical cancer screening.

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Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Rockville, MD, USA. Electronic address:
Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Rockville, MD, USA.
The University of Edinburgh, Edinburgh, UK.
Belgian Cancer Centre/Unit of Cancer Epidemiology, Scientific Institute of Public Health, Brussels, Belgium.


Despite HPV vaccines, screening will remain central for decades to control cervical cancer. Recently, HPV testing alone or with cytology was introduced as an alternative to cytology screening. However, most HPV infections are harmless and additional tests are required to identify women with progressing infections or precancer. With three options for primary screening, and without clear strategies for triage of screen-positive women, there is great confusion about the best approach. Also, increasing HPV vaccination coverage will lead to lower disease prevalence, and force new screening approaches. Currently recommended triage strategies for primary HPV screening include HPV genotyping for HPV16 and HPV18 and cytology. Other alternatives that are currently evaluated include p16/Ki-67 dual stain cytology, host methylation, and viral methylation testing. Clinical management of women with cervical cancer screening results is moving to use risk thresholds rather than individual test results. Specific risk thresholds have been defined for return to primary screening, repeat testing, referral to colposcopy, and immediate treatment. Choice of test algorithms is based on comparison of absolute risk estimates from triage tests with established clinical thresholds. Importantly, triage tests need to be evaluated together with the primary screening test and the downstream clinical management. An optimal integrated screening and triage strategy should reassure the vast majority of women that they are at very low risk of cervical cancer, send the women at highest risk to colposcopy at the right time, when disease can be colposcopically detected, and minimize the intermediate risk group that requires continued surveillance.


Cervical cancer screening; Cytology; HPV; Methylation; Triage; p16/Ki-67

[Available on 2017-03-01]
[Indexed for MEDLINE]
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