Incidence of cervical precancers among HIV-seropositive women
- PMID: 25499260
- PMCID: PMC4416973
- DOI: 10.1016/j.ajog.2014.12.003
Incidence of cervical precancers among HIV-seropositive women
Abstract
Objective: The objective of the study was to estimate the impact of human immunodeficiency virus (HIV) infection on the incidence of high-grade cervical intraepithelial neoplasia (CIN).
Study design: HIV-seropositive and comparison seronegative women enrolled in a prospective US cohort study were followed up with semiannual Papanicolaou testing, with colposcopy for any abnormality. Histology results were retrieved to identify CIN3+ (CIN3, adenocarcinoma in situ, and cancer) and CIN2+ (CIN2 and CIN3+). Annual detection rates were calculated and risks compared using a Cox analysis. Median follow-up (interquartile range) was 11.0 (5.4-17.2) years for HIV-seronegative and 9.9 (2.5-16.0) for HIV-seropositive women.
Results: CIN3+ was diagnosed in 139 HIV-seropositive (5%) and 19 HIV-seronegative women (2%) (P<.0001), with CIN2+ in 316 (12%) and 34 (4%) (P<.0001). The annual CIN3+ detection rate was 0.6 per 100 person-years in HIV-seropositive women and 0.2 per 100 person-years in seronegative women (P<.0001). The CIN3+ detection rate fell after the first 2 years of study, from 0.9 per 100 person-years among HIV-seropositive women to 0.4 per 100 person-years during subsequent follow-up (P<.0001). CIN2+ incidence among these women fell similarly with time, from 2.5 per 100 person-years during the first 2 years after enrollment to 0.9 per 100 person-years subsequently (P<.0001). In Cox analyses controlling for age, the hazard ratio for HIV-seropositive women with CD4 counts less than 200/cmm compared with HIV-seronegative women was 8.1 (95% confidence interval, 4.8-13.8) for CIN3+ and 9.3 (95% confidence interval, 6.3-13.7) for CIN2+ (P<.0001).
Conclusion: Although HIV-seropositive women have more CIN3+ than HIV-seronegative women, CIN3+ is uncommon and becomes even less frequent after the initiation of regular cervical screening.
Keywords: cervical cancer prevention; cervical intraepithelial neoplasia; human immunodeficiency virus in women.
Copyright © 2015 Elsevier Inc. All rights reserved.
Conflict of interest statement
Disclosure of interests: Dr. Darragh reported potential conflicts. These include:
Hologic: Research supplies for anal cytology, honorarium for webinar on anal cancer screening, October 2012 OncoHealth Advisory Board, Stock options, ongoing
Roche, October 2013: Honorarium paid to UCSF, October 2013
No other authors report potential financial conflicts of interest related to the study.
A study of Dr. Strickler’s involves free blinded testing using HPV E6/E7 protein assays by Arbor Vita (CA, USA), p16/Ki67 cytology by MTM Laboratories / Ventura – Roche (Mannheim, Germany), MCM-2/TOP2A cytology, BD Diagnostics (NJ, USA). No financial payments to Dr Strickler or his home institution were received.
No other authors reported potential financial conflicts of interest.
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