Evidence map›Paper›PMID 26224796›Full record

ArticleCancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology2015

Anal Cancer Incidence in the United States, 1977-2011: Distinct Patterns by Histology and Behavior.

Meredith S Shiels, Aimée R Kreimer, Anna E Coghill, Teresa M Darragh, Susan S Devesa

Open access · bronzeAbstract readComparative StudyMulticenter Study
In one paragraph

Article in Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 80 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
80citing papers in PubMed, 3 pooled it
16.2field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

80 citing papers in PubMed, 3 syntheses or guidelines pooled it, 162 citations in OpenAlex.

  1. Anal Carcinoma, Version 2.2018, NCCN Clinical Practice Guidelines in Oncology.Journal of the National Comprehensive Cancer Network : JNCCN · 2018
    Guideline
  2. Pooled it
  3. Pooled it
  4. Trial
  5. Review
  6. Review
  7. Review
  8. An overview of clinical trials in anal cancer 1999-2024.ESMO gastrointestinal oncology · 2026
    Article
  9. Review
  10. Article
  11. Review
  12. Review
  13. Article
  14. Article
  15. Article
  16. Factors Influencing Outcomes and Survival in Anal Cancer.Current oncology (Toronto, Ont.) · 2024
    Article
  17. Article
  18. Article
  19. Article
  20. Article

20 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 1 institution in 1 country.

Meredith S ShielsDivision of Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, Maryland. shielsms@mail.nih.gov.
Aimée R KreimerDivision of Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, Maryland.
Anna E CoghillDivision of Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, Maryland.
Teresa M DarraghDepartment of Pathology, University of California San Francisco, San Francisco, California.
Susan S DevesaDivision of Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, Maryland.
University of California, San Francisco · US

Funding

HPV and cancer at multiple anatomic sitesZIACP010209 · NCI · DIVISION OF CANCER EPIDEMIOLOGY AND GENETICS · PI KREIMER, AIMEE · 2010 to 2025
$7.9M
Intramural NIH HHS Z99 CA999999
6 · The paper itself

Abstract

backgroundAlthough anal squamous cell carcinoma (SCC) and adenocarcinoma (ADC) are generally combined in cancer surveillance, their etiologies likely differ. Here, we describe demographic characteristics and trends in incidence rates (IR) of anal cancer by histology (SCC, ADC) and behavior (invasive, in situ) in the United States.

methodsWith data from the Surveillance, Epidemiology, and End Results (SEER) Program, we estimated age-adjusted anal cancer IRs across behavior/histology by demographic and tumor characteristics for 2000-2011. Trends in IRs and annual percent changes during 1977-2011 were also estimated and compared with rectal cancer.

resultsWomen had higher rates of SCC [rate ratio (RR), 1.45; 95% confidence interval (CI), 1.40-1.50] and lower rates of ADC (RR, 0.68; 95% CI, 0.62-0.74) and squamous carcinoma in situ (CIS; RR, 0.36; 95% CI, 0.34-0.38) than men. Blacks had lower rates of SCC (RR, 0.82; 95% CI, 0.77-0.87) and CIS (RR, 0.90; 95% CI, 0.83-0.98) than non-Hispanic whites, but higher rates of ADC (RR, 1.48; 95% CI, 1.29-1.70). Anal cancer IRs were higher in men and blacks aged <40 years. During 1992-2011, SCC IRs increased 2.9%/year, ADC IRs declined nonsignificantly, and CIS IRs increased 14.2%/year. SCC and ADC IR patterns and trends were similar across anal and rectal cancers.

conclusionsRates of anal SCC and CIS have increased strongly over time, in contrast to rates of anal ADC, similar to trends observed for rectal SCC and ADC. IMPACT: Anal SCC and ADC likely have different etiologies, but may have similar etiologies to rectal SCC and ADC, respectively. Strong increases in CIS IRs over time may reflect anal cancer screening patterns.

Indexed as

ForecastingNeoplasm StagingRegistriesSEER ProgramAdenocarcinomaAdultAgedAge DistributionAge FactorsAnus NeoplasmsCarcinoma, Squamous CellDisease ProgressionFemaleHumansIncidenceMale

Identifiers

PMID26224796
PMCPMC4592448
OpenAlexW2104342315

What OpenQuestion holds

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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.