Cervical adenocarcinoma in situ: Human papillomavirus types and incidence trends in five states, 2008-2015

Int J Cancer. 2020 Feb 1;146(3):810-818. doi: 10.1002/ijc.32340. Epub 2019 May 6.

Abstract

Primary prevention through the use of human papillomavirus (HPV) vaccination is expected to impact both cervical intraepithelial neoplasia (CIN) and adenocarcinoma in situ (AIS). While CIN is well described, less is known about the epidemiology of AIS, a rare cervical precancer. We identified AIS and CIN grade 3 (CIN3) cases through population-based surveillance, and analyzed data on HPV types and incidence trends overall, and among women screened for cervical cancer. From 2008 to 2015, 470 AIS and 6,587 CIN3 cases were identified. The median age of women with AIS was older than those with CIN3 (35 vs. 31 years; p < 0.01). HPV16 was the most frequently detected type in both AIS and CIN3 (57% in AIS; 58% in CIN3), whereas HPV18 was the second most common type in AIS and less common in CIN3 (38% vs. 5%; p < 0.01). AIS lesions were more likely than CIN3 lesions to be positive for high-risk types targeted by the bivalent and quadrivalent vaccines (HPV16/18, 92% vs. 63%; p < 0.01), and 9-valent vaccine (HPV16/18/31/33/45/52/58, 95% vs. 87%; p < 0.01). AIS incidence rates decreased significantly in the 21-24 year age group (annual percent change [APC] overall: -22.1%, 95% CI: -33.9 to -8.2; APC among screened: -16.1%, 95% CI: -28.8 to -1.2), but did not decrease significantly in any older age group. This report on the largest number of genotyped AIS cases to date suggests an important opportunity for vaccine prevention of AIS, and is the first to document a decline in AIS incidence rates among young women during the vaccine era.

Keywords: AIS; HPV; adenocarcinoma in situ; cervical cancer; cervical intraepithelial lesions.

Publication types

  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Adenocarcinoma in Situ / epidemiology*
  • Adenocarcinoma in Situ / prevention & control
  • Adenocarcinoma in Situ / virology
  • Adolescent
  • Adult
  • Age Factors
  • DNA, Viral / isolation & purification
  • Female
  • Human papillomavirus 16 / genetics
  • Human papillomavirus 16 / isolation & purification*
  • Human papillomavirus 18 / genetics
  • Human papillomavirus 18 / isolation & purification*
  • Humans
  • Incidence
  • Mass Screening / statistics & numerical data
  • Papillomavirus Infections / epidemiology*
  • Papillomavirus Infections / prevention & control
  • Papillomavirus Infections / virology
  • Papillomavirus Vaccines / therapeutic use
  • Precancerous Conditions / epidemiology*
  • Precancerous Conditions / prevention & control
  • Precancerous Conditions / virology
  • Uterine Cervical Dysplasia / epidemiology*
  • Uterine Cervical Dysplasia / prevention & control
  • Uterine Cervical Dysplasia / virology
  • Uterine Cervical Neoplasms / diagnosis
  • Uterine Cervical Neoplasms / prevention & control
  • Uterine Cervical Neoplasms / virology
  • Young Adult

Substances

  • DNA, Viral
  • Papillomavirus Vaccines