Evidence map›Paper›PMID 27608013›Full record

SynthesisInternational journal of molecular sciences2016

Serum Calcium and the Risk of Breast Cancer: Findings from the Swedish AMORIS Study and a Meta-Analysis of Prospective Studies.

Wahyu Wulaningsih, Harkiran K Sagoo, Mustafa Hamza, Jennifer Melvin, Lars Holmberg, Hans Garmo, Håkan Malmström, Mats Lambe, Niklas Hammar, Göran Walldius and 2 more

Open access · goldAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in International journal of molecular sciences, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed, 2 pooled it
3.7field-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

24 citing papers in PubMed, 2 syntheses or guidelines pooled it, 42 citations in OpenAlex.

  1. Pooled it
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  7. Review
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  12. Cancer Progress and Priorities: Breast Cancer.Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology · 2021
    Review
  13. Review
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  15. Article
  16. Variants inAmerican journal of cancer research · 2020
    Article
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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

12 authors at 5 institutions in 2 countries.

Wahyu WulaningsihDivision of Cancer Studies, Cancer Epidemiology Group, King's College London, London SE1 9RT, UK. wahyu.wulaningsih@kcl.ac.uk.
Harkiran K SagooDivision of Cancer Studies, Cancer Epidemiology Group, King's College London, London SE1 9RT, UK. harkiran.sagoo@kcl.ac.uk.
Mustafa HamzaDivision of Cancer Studies, Cancer Epidemiology Group, King's College London, London SE1 9RT, UK. mustafa.hamza@kcl.ac.uk.
Jennifer MelvinDivision of Cancer Studies, Cancer Epidemiology Group, King's College London, London SE1 9RT, UK. jennifer.melvin@kcl.ac.uk.
Lars HolmbergDivision of Cancer Studies, Cancer Epidemiology Group, King's College London, London SE1 9RT, UK. lars.holmberg@kcl.ac.uk.
Hans GarmoDivision of Cancer Studies, Cancer Epidemiology Group, King's College London, London SE1 9RT, UK. hans.garmo@kcl.ac.uk.
Håkan MalmströmUnit of Epidemiology, Institute of Environmental Medicine, Karolinska Institutet, Stockholm 171 77, Sweden. hakan.malmstrom@ki.se.
Mats LambeRegional Cancer Centre, Uppsala 751 83, Sweden. mats.lambe@ki.se.
Niklas HammarUnit of Epidemiology, Institute of Environmental Medicine, Karolinska Institutet, Stockholm 171 77, Sweden. niklas.hammar@ki.se.
Göran WalldiusUnit of Cardiovascular Epidemiology, Institute of Environmental Medicine, Karolinska Institutet, Stockholm 171 77, Sweden. goran.walldius@ki.se.
Ingmar JungnerDepartment of Medicine, Clinical Epidemiological Unit, Karolinska Institutet and CALAB Research, Stockholm 171 77, Sweden. ingmar.jungner@ki.se.
Mieke Van HemelrijckDivision of Cancer Studies, Cancer Epidemiology Group, King's College London, London SE1 9RT, UK. mieke.vanhemelrijck@kcl.ac.uk.
London Cancer · GBKarolinska Institutet · SEAstraZeneca (Sweden) · SEKing's College London · GBRegional Research Council in Uppsala-Örebro Region · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

To investigate the association between serum calcium and risk of breast cancer using a large cohort and a systematic review with meta-analysis. From the Swedish Apolipoprotein Mortality Risk (AMORIS) Study we included 229,674 women who had baseline measurements of serum total calcium and albumin. Multivariable Cox regression was used to assess the association between total and albumin-corrected calcium and breast cancer risk. For the systematic review, an electronic search of MEDLINE and EMBASE databases was performed to identify other prospective cohorts assessing the relationship between serum calcium and breast cancer risk. We pooled the results of our AMORIS cohort with other eligible studies in a meta-analysis using a random effects model. I² test was used to assess heterogeneity. In the AMORIS study, 10,863 women were diagnosed with breast cancer (mean follow-up: 19 years). We found an inverse association between total serum calcium and breast cancer when comparing the fourth quartile to the first quartile (HR: 0.94, 95% CI: 0.88-0.99, p value for trend 0.04) and similar results using albumin-corrected calcium. In the systematic review, we identified another two prospective cohorts evaluating pre-diagnostic serum total calcium and breast cancer. Combining these studies and our findings in AMORIS in a meta-analysis showed a protective effect of serum calcium against breast cancer, with a summary RR of 0.80 (95% CI: 0.66-0.97). No substantial heterogeneity was observed. Our findings in AMORIS and the meta-analysis support an inverse association between serum calcium and breast cancer risk, which warrants mechanistic investigations.

Indexed as

AdultBiomarkers, TumorBreast NeoplasmsCalciumFemaleHumansMiddle AgedProspective StudiesSwedenBiomarkers, TumorCalciumalbuminbreast cancercalciumprospective study

Identifiers

PMID27608013
PMCPMC5037765
OpenAlexW2512328310

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.