Evidence map›Paper›PMID 23460889›Full record

ArticlePloS one2013

Vitamin D status, filaggrin genotype, and cardiovascular risk factors: a Mendelian randomization approach.

Tea Skaaby, Lise Lotte Nystrup Husemoen, Torben Martinussen, Jacob P Thyssen, Michael Melgaard, Betina Heinsbæk Thuesen, Charlotta Pisinger, Torben Jørgensen, Jeanne D Johansen, Torkil Menné and 6 more

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed, 2 pooled it
5.8field-weighted citation impact, top 4% 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

36 citing papers in PubMed, 2 syntheses or guidelines pooled it, 61 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Trial
  4. Trial
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Vitamin D, skin filaggrin, allergic sensitization, and race.Annals of allergy, asthma & immunology : official publication of the American College of Allergy, Asthma, & Immunology · 2022
    Article
  11. Article
  12. Association of Vitamin D Deficiency with Diabetic Nephropathy.Endocrinology and metabolism (Seoul, Korea) · 2021
    Article
  13. Article
  14. Article
  15. Article
  16. Vitamin D and cardiovascular disorders.Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA · 2019
    Review
  17. Article
  18. Review
  19. Review
  20. Article
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

16 authors at 5 institutions in 1 country.

Tea SkaabyResearch Centre for Prevention and Health, Glostrup Hospital, Glostrup, Denmark. tea.skaaby.01@regionh.dk
Lise Lotte Nystrup Husemoen
Torben Martinussen
Jacob P Thyssen
Michael Melgaard
Betina Heinsbæk Thuesen
Charlotta Pisinger
Torben Jørgensen
Jeanne D Johansen
Torkil Menné
Berit Carlsen
Pal B Szecsi
Steen Stender
Runa Vavia Fenger
Mogens Fenger
Allan Linneberg
Gentofte Hospital · DKGlostrup Hospital · DKAalborg University · DKHvidovre Hospital · DKUniversity of Copenhagen · DK

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundVitamin D deficiency is associated with increased cardiovascular disease risk in observational studies. Whether these associations are causal is not clear. Loss-of-function mutations in the filaggrin gene result in up to 10% higher serum vitamin D concentrations, supposedly due to a decreased UV-protection of the keratinocytes. We used a Mendelian randomization approach to estimate the causal effect of vitamin D status on serum lipids, blood pressure, body mass index, waist circumference, and the metabolic syndrome.

methodsThree population based studies were included, Monica10 (2,656 individuals aged 40-71 years), Inter99 (6,784 individuals aged 30-60 years), and Health2006 (3,471 individuals aged 18-69 years) conducted in 1993-94, 1999-2001, and 2006-2008, respectively. Participants were genotyped for the two most common filaggrin gene mutations in European descendants R501X and 2282del4, in all three studies and further for the R2447X mutation in the Inter99 and Health2006 studies. Filaggrin genotype was used as instrumental variable for vitamin D status. Baseline measurements of serum 25-hydroxyvitamin D were performed in all three studies.

resultsInstrumental variable analyses showed a 23.8% (95% confidence interval, CI 3.0, 48.6) higher HDL cholesterol level and a 30.5% (95% CI: 0.8, 51.3) lower serum level of triglycerides per doubling of vitamin D. These associations were, however, not statistically significant when applying the Bonferroni adjusted significance level. The remaining lipids showed non-significant changes in a favorable direction. Doubling of vitamin D gave a non-significantly lower odds ratio = 0.26 (95% CI: 0.06, 1.17) of the metabolic syndrome. There were no statistically significant causal effects of vitamin D status on blood pressure, body mass index, or waist circumference.

conclusionOur results support a causal effect of higher vitamin D status on a more favorable lipid profile, although more studies in other populations are needed to confirm our results.

Indexed as

Genetic Predisposition to DiseaseMendelian Randomization AnalysisAdolescentAdultAgedCardiovascular DiseasesFemaleFilaggrin ProteinsGenotypeHumansIntermediate Filament ProteinsLinear ModelsMaleMiddle AgedRisk FactorsVitamin DFilaggrin ProteinsFLG protein, humanIntermediate Filament ProteinsVitamin D

Identifiers

PMID23460889
PMCPMC3584055
OpenAlexW1971865963

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.