Evidence map›Paper›PMID 24518831›Full record

ArticleEuropean journal of human genetics : EJHG2014

Controversial association results for INSIG2 on body mass index may be explained by interactions with age and with MC4R.

Dörthe Malzahn, Martina Müller-Nurasyid, Iris M Heid, H-Erich Wichmann, KORA study group, Heike Bickeböller

Abstract read
In one paragraph

Article in European journal of human genetics : EJHG, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
–field-weighted citation impact
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

6 citing papers in PubMed.

  1. Article
  2. A comprehensive review of genetic causes of obesity.World journal of pediatrics : WJP · 2024
    Review
  3. Review
  4. Tumour biology of obesity-related cancers: understanding the molecular concept for better diagnosis and treatment.Tumour biology : the journal of the International Society for Oncodevelopmental Biology and Medicine · 2016
    Review
  5. Article
  6. 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

6 authors.

Dörthe MalzahnDepartment of Genetic Epidemiology, University Medical Center, Georg-August-University, Göttingen, Germany.
Martina Müller-Nurasyid1] Department of Medicine I, University Hospital Grosshadern, Ludwig-Maximilians-University, Munich, Germany [2] Institute of Medical Informatics, Biometry and Epidemiology, Chair of Epidemiology and Chair of Genetic Epidemiology, Ludwig-Maximilians-University, Neuherberg, Germany [3] Institute of Genetic Epidemiology, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany.
Iris M Heid1] Institute of Genetic Epidemiology, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany [2] Department of Genetic Epidemiology, University of Regensburg, Regensburg, Germany.
H-Erich Wichmann1] Institute of Epidemiology I, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany [2] Institute of Medical Informatics, Biometry and Epidemiology, Chair of Epidemiology, Ludwig-Maximilians-University, Munich, Germany [3] Klinikum Großhadern, Munich, Germany.
KORA study group
Heike BickeböllerDepartment of Genetic Epidemiology, University Medical Center, Georg-August-University, Göttingen, Germany.

Funding

Cell Interactions in the Inflamed Intestinal MucosaR01DK075787 · NIDDK · BOSTON CHILDREN'S HOSPITAL · PI JOEL N HIRSCHHORN · 2007 to 2026
$13.1M
GENETIC ANALYSIS OF COMMON DISEASES: AN EVALUATIONR01GM031575 · NIGMS · UNIVERSITY OF TEXAS RIO GRANDE VALLEY · PI ALMASY, LAURA A. · 1985 to 2016
$7.8M
THE FRAMINGHAM HEART STUDY-N01HC25195-268025195-268025195N01HC025195 · HC · TRUSTEES OF BOSTON UNIVERSITY · PI WOLF, PHILIP A · 2002 to 2006
–
NHLBI NIH HHS N01 HC025195NIDDK NIH HHS 1 R01 DK075787-01A1NIDDK NIH HHS R01 DK075787NIGMS NIH HHS R01 GM031575
6 · The paper itself

Abstract

Among the single-nucleotide polymorphisms (SNPs) previously reported to be associated with body mass index (BMI) and obesity, we focus on a common risk variant rs7566605 upstream of the insulin-induced gene 2 (INSIG2) gene and a rare protective variant rs2229616 on the melanocortin-4 receptor (MC4R) gene. INSIG2 is involved in adipogenesis and MC4R effects hormonal appetite control in response to the amount of adipose tissue. The influence of rs2229616 (MC4R) on BMI and obesity has been confirmed repeatedly and insight into the underlying mechanism provided. However, a main effect of rs7566605 (INSIG2) is under debate because of inconsistent replications of association. Interaction of rs7566605 with age may offer an explanation. SNP-age and SNP-SNP interaction models were tested on independent individuals from three population-based longitudinal cohorts, restricting the analysis to an observed age of 25-74 years. KORA S3/F3, KORA S4/F4 (Augsburg, Germany, 1994-2005, 1999-2008), and Framingham-Offspring data (Framingham, USA, 1971-2001) were analysed, with a total sample size of N=6926 in the joint analysis. The effect of interaction between rs7566605 and age on BMI and obesity status is significant and consistent across studies. This new evidence for rs7566605 (INSIG2) complements previous research. In addition, the interaction effect of rs7566605 with the MC4R variant rs2229616 on BMI was observed. This effect size was three times larger than that in a previously reported single-locus main effect of rs2229616. This leads to the conclusion that SNP-age or SNP-SNP interactions can mask genetic effects for complex diseases if left unaccounted for.

Indexed as

Body Mass IndexEpistasis, GeneticAdipogenesisAdipose TissueAdultAgedCross-Sectional StudiesFemaleGene-Environment InteractionGene FrequencyGenetic Predisposition to DiseaseGermanyHumansIntracellular Signaling Peptides and ProteinsLogistic ModelsLongitudinal StudiesINSIG2 protein, humanIntracellular Signaling Peptides and ProteinsMC4R protein, humanMembrane ProteinsReceptor, Melanocortin, Type 4

Identifiers

PMID24518831
PMCPMC4169541

What OpenQuestion holds

Textmetadata
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.