Evidence map›Paper›PMID 20044928›Full record

ArticleBMC medical genetics2010

Mutation screen and association studies for the fatty acid amide hydrolase (FAAH) gene and early onset and adult obesity.

Timo D Müller, Günter Brönner, Melanie Wandolski, Jophia Carrie, Trang T Nguyen, Brandon H Greene, André Scherag, Harald Grallert, Carla Ig Vogel, Susann Scherag and 6 more

Open access · goldAbstract read
In one paragraph

Article in BMC medical genetics, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed, 1 pooled it
2.1field-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

8 citing papers in PubMed, 1 synthesis or guideline pooled it, 24 citations in OpenAlex.

  1. Pooled it
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  3. Interplays of Dietary Fat with BMI andFood science & nutrition · 2024
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  4. Genes · 2023
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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

16 authors at 4 institutions in 2 countries.

Timo D MüllerDepartment of Child and Adolescent Psychiatry and Psychotherapy, University of Duisburg-Essen, Essen, Germany.
Günter Brönner
Melanie Wandolski
Jophia Carrie
Trang T Nguyen
Brandon H Greene
André Scherag
Harald Grallert
Carla Ig Vogel
Susann Scherag
Winfried Rief
Hans-Erich Wichmann
Thomas Illig
Helmut Schäfer
Johannes Hebebrand
Anke Hinney
University of Duisburg-Essen · DEPhilipps University of Marburg · DEDeutsches Biomasseforschungszentrum · DEUniversity of Würzburg · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe orexigenic effects of cannabinoids are limited by activation of the endocannabinoid degrading enzyme fatty acid amide hydrolase (FAAH). The aim of this study was to analyse whether FAAH alleles are associated with early and late onset obesity.

methodsWe initially assessed association of five single nucleotide polymorphisms (SNPs) in FAAH with early onset extreme obesity in up to 521 German obese children and both parents. SNPs with nominal p-values <or= 0.1 were subsequently analysed in 235 independent German obesity families. SNPs associated with childhood obesity (p-values <or2= 0.05) were further analysed in 8,491 adult individuals of a population-based cohort (KORA) for association with adult obesity. One SNP was further analysed in 985 German obese adults and 588 normal and underweight controls. In parallel, we screened the FAAH coding region for novel sequence variants in 92 extremely obese children using single-stranded-conformation-polymorphism-analysis and denaturing HPLC and assessed the implication of the identified new variants for childhood obesity.

resultsThe trio analysis revealed some evidence for an association of three SNPs in FAAH (rs324420 rs324419 and rs873978) with childhood obesity (two-sided p-values between 0.06 and 0.10). Although analyses of these variants in 235 independent obesity families did not result in statistically significant effects (two-sided p-values between 0.14 and 0.75), the combined analysis of all 603 obesity families supported the idea of an association of two SNPs in FAAH (rs324420 and rs2295632) with early onset extreme obesity (p-values between 0.02 and 0.03). No association was, however, found between these variants and adult obesity. The mutation screen revealed four novel variants, which were not associated with early onset obesity (p > 0.05).

conclusionsAs we observed some evidence for an association of the FAAH variants rs2295632 rs324420 with early onset but not adult obesity, we conclude that the FAAH variants analyzed here at least do not seem to play a major role in the etiology of obesity within our samples.

Indexed as

AdolescentAdultAllelesAmidohydrolasesBody Mass IndexCase-Control StudiesChildCohort StudiesFatty Acid Amide HydrolasesFemaleGenotypeHumansMaleMiddle AgedMutationObesityAmidohydrolasesFatty Acid Amide Hydrolases

Identifiers

PMID20044928
PMCPMC2830932
OpenAlexW1971226114

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.