Evidence map›Paper›PMID 33293341›Full record

ArticleCancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology2021

Association Between Serum Iron Biomarkers and Breast Cancer.

Ann Von Holle, Katie M O'Brien, Dale P Sandler, Robert Janicek, Clarice R Weinberg

Open access · bronzeAbstract read
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, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
1.6field-weighted citation impact, top 14% 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

14 citing papers in PubMed, 21 citations in OpenAlex.

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  14. Serum Ferritin, Vitamin D and Pathological Factors in Breast Cancer Patients.Medical journal of the Islamic Republic of Iran · 2021
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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 2 institutions in 1 country.

Ann Von HolleBiostatistics and Computational Biology Branch, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina.ORCID 0000-0002-0299-1114
Katie M O'BrienEpidemiology Branch, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina.ORCID 0000-0002-1931-1349
Dale P SandlerEpidemiology Branch, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina.ORCID 0000-0002-6776-0018
Robert JanicekAdvanced Research and Diagnostic Laboratory, University of Minnesota, Minneapolis, Minnesota.
Clarice R WeinbergBiostatistics and Computational Biology Branch, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina. weinberg@niehs.nih.gov.
National Institute of Environmental Health Sciences · USUniversity of Minnesota · US

Funding

Environmental and Genetic Risk Factors For Breast Cancer: The Sister StudyZIAES044005 · NIEHS · NATIONAL INSTITUTE OF ENVIRONMENTAL HEALTH SCIENCES · PI SANDLER, DALE P · 2009 to 2025
$22.7M
The Two Sister StudyZIAES102245 · NIEHS · NATIONAL INSTITUTE OF ENVIRONMENTAL HEALTH SCIENCES · PI WEINBERG, CLARICE · 2009 to 2025
$8.6M
Genetic and Environmental Risk Factors for Breast Cancer: The Sister StudyZ01ES044005 · NIEHS · NATIONAL INSTITUTE OF ENVIRONMENTAL HEALTH SCIENCES · PI SANDLER, DALE P · 1999 to 2008
$1.3M
Collaborative research in environmental health sciencesZIAES103066 · NIEHS · NATIONAL INSTITUTE OF ENVIRONMENTAL HEALTH SCIENCES · PI PEDDADA, SHYAMAL · 2012 to 2017
$732k
Intramural NIH HHS Z01 ES044005Intramural NIH HHS ZIA ES102245Intramural NIH HHS ZIA ES103066
6 · The paper itself

Abstract

backgroundIron is both essential to life and potentially toxic at higher levels. Epidemiologic studies of iron and breast cancer are sparse, with substantial heterogeneity found in a recent meta-analysis. Evidence based on a comprehensive set of iron biomarkers and a large sample size could help clarify relationships between iron body stores and breast cancer risk.

methodsA case-cohort sample of 6,008 women, including 3,011 incident cases, has been followed for a median of 7.9 years. We estimated breast cancer HRs with Cox models, including age as the primary time scale and including in turn iron, ferritin, percent transferrin saturation, and their first principal component (PC) both as categorical (quartiles) and continuous measures.

resultsAdjusted HRs for the highest versus lowest quartiles of iron, ferritin, and transferrin saturation (95% confidence interval) were 1.06 (0.90-1.25), 1.03 (0.87-1.23), and 0.94 (0.80-1.12), respectively, and 1.06 (0.90-1.25) for the first principal component (PC). Associations were similar when follow-up time was restricted to ≤4 or >2 years.

conclusionsA study with one of the largest sample sizes to date and with all three measures of circulating iron, ferritin, and transferrin saturation does not support a strong association between elevated iron stores and breast cancer risk. Further investigation of low iron may be warranted. IMPACT: These results do not support a strong association between iron overload and breast cancer incidence.

Indexed as

BiomarkersBreast NeoplasmsFemaleHumansIncidenceIronMiddle AgedNegative ResultsRisk FactorsBiomarkersIron

Identifiers

PMID33293341
PMCPMC7867615
OpenAlexW3111449885

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.