Evidence map›Paper›PMID 22337533›Full record

Trial reportCancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology2012

Postmenopausal hormone therapy and colorectal cancer risk in relation to somatic KRAS mutation status among older women.

Paul J Limburg, David Limsui, Robert A Vierkant, Lori S Tillmans, Alice H Wang, Charles F Lynch, Kristin E Anderson, Amy J French, Robert W Haile, Lisa J Harnack and 5 more

Open access · bronzeAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
3.5field-weighted citation impact, top 7% 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

19 citing papers in PubMed, 24 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Review
  5. Review
  6. Review
  7. Article
  8. Associations between Environmental Exposures and Incident Colorectal Cancer by ESR2 Protein Expression Level in a Population-Based Cohort of Older Women.Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology · 2015
    Article
  9. Review
  10. Review
  11. Review
  12. Associations between cigarette smoking, hormone therapy, and folate intake with incident colorectal cancer by TP53 protein expression level in a population-based cohort of older women.Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology · 2014
    Article
  13. Article
  14. Article
  15. Physical activity, tumor PTGS2 expression, and survival in patients with colorectal cancer.Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology · 2013
    Article
  16. Molecular pathological epidemiology of epigenetics: emerging integrative science to analyze environment, host, and disease.Modern pathology : an official journal of the United States and Canadian Academy of Pathology, Inc · 2013
    Review
  17. Article
  18. Ogino et Al. Respond to "the 21st century epidemiologist".American journal of epidemiology · 2012
    Article
  19. Review
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

15 authors at 6 institutions in 1 country.

Paul J LimburgDivision of Gastroenterology & Hepatology, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA. limburg.paul@mayo.edu
David Limsui
Robert A Vierkant
Lori S Tillmans
Alice H Wang
Charles F Lynch
Kristin E Anderson
Amy J French
Robert W Haile
Lisa J Harnack
John D Potter
Susan L Slager
Thomas C Smyrk
Stephen N Thibodeau
James R Cerhan
Cancer Research Center · USKeck Hospital of USC · USMayo Clinic · USUniversity of Iowa · USUniversity of Minnesota · USFred Hutch Cancer Center · US

Funding

Molecular Epidemiology of Colorectal Cancer SubtypesR01CA107333 · NCI · MAYO CLINIC ROCHESTER · PI LIMBURG, PAUL J · 2005 to 2010
$1.4M
NCI NIH HHS R01 CA107333
6 · The paper itself

Abstract

backgroundPostmenopausal hormone (PMH) therapy represents a controversial colorectal cancer (CRC) preventive intervention. Because colorectal carcinogenesis is a heterogeneous process, we evaluated associations between PMH therapy and incident CRC in relation to KRAS mutation status in a population-based cohort of older women [Iowa Women's Health Study (IWHS)].

methodsThe IWHS enrolled 41,836 randomly selected women, ages 55 to 69 years, in 1986. PMH therapy and other exposure data were recorded at baseline. Tissue samples from prospectively identified CRC cases (n = 507) were analyzed for somatic KRAS mutations (exon 2, codons 12 and 13). Multivariable Cox regression models were fit to estimate relative risks (RR) and 95% confidence intervals (CI).

resultsPMH therapy (ever vs. never) was inversely associated with KRAS mutation-negative (RR = 0.83; 95% CI, 0.66-1.06; P = 0.14) and KRAS mutation-positive (RR = 0.82; 95% CI, 0.58-1.16; P = 0.27) tumors, although the observed risk estimates were not statistically significant. When anatomic subsite was additionally considered, the strongest association was found for KRAS mutation-negative, distal colorectal tumors (RR = 0.64; 95% CI, 0.43-0.96; P = 0.03).

conclusionsTo our knowledge, we provide the first report of KRAS-defined CRC risks associated with PMH therapy. These data suggest that PMH therapy may reduce CRC risk through mechanisms beyond KRAS mutation status but might provide greater benefits for KRAS mutation-negative than mutation-positive tumors (at least in the distal colorectum). IMPACT: Findings from this prospective cohort study provide novel insights about the molecular biology of PMH therapy-related CRC risk reduction.

Indexed as

AdultAgedColorectal NeoplasmsEstrogen Replacement TherapyFemaleFollow-Up StudiesHumansIowaMiddle AgedMutationPostmenopausePrognosisProspective StudiesProto-Oncogene ProteinsProto-Oncogene Proteins p21(ras)ras ProteinsKRAS protein, humanProto-Oncogene ProteinsProto-Oncogene Proteins p21(ras)ras Proteins

Identifiers

PMID22337533
PMCPMC3584684
OpenAlexW2104426099

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

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.