Evidence map›Paper›PMID 23034957›Full record

Trial reportThe American journal of clinical nutrition2012

TCF7L2 genetic variants modulate the effect of dietary fat intake on changes in body composition during a weight-loss intervention.

Josiemer Mattei, Qibin Qi, Frank B Hu, Frank M Sacks, Lu Qi

Registry-linked trialAbstract readMulticenter StudyRandomized Controlled Trial
In one paragraph

Trial report in The American journal of clinical nutrition, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT00072995 (Preventing Overweight Using Novel Dietary Strategies), which is not on this map. Cited by 52 papers, 7 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
52citing papers in PubMed, 7 pooled it
–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.

NCT00072995 nacompletednot on this map

Preventing Overweight Using Novel Dietary Strategies (Pounds Lost)

TypeinterventionalSponsorBrigham and Women's HospitalRan2003 to 2007Enrolled811ConditionsCardiovascular Diseases, Heart Diseases, ObesityArmsFour Diets Differing in Macronutrient Composition, Diets Low in Saturated Fat
3 · Its place in the literature

Who cites it

52 citing papers in PubMed, 7 syntheses or guidelines pooled it.

  1. Pooled it
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  6. Reduction in saturated fat intake for cardiovascular disease.The Cochrane database of systematic reviews · 2020
    Pooled it
  7. Reduction in saturated fat intake for cardiovascular disease.The Cochrane database of systematic reviews · 2020
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  14. Interaction between theFrontiers in nutrition · 2025
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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.

Josiemer MatteiDepartment of Nutrition, Harvard School of Public Health, Boston, MA 02115, USA.
Qibin Qi
Frank B Hu
Frank M Sacks
Lu Qi

Funding

Zoledronic Acid in Treatment of Osteoporosis in PostmenoM01RR002635 · NCRR · BRIGHAM AND WOMEN'S HOSPITAL · PI GARBER, JUDY E. · 1985 to 2008
$48.4M
Transgenic CoreP30DK046200 · NIDDK · TUFTS MEDICAL CENTER · PI GREENBERG, ANDREW S, PERISSI, VALENTINA · 1992 to 2021
$25.0M
Dietary Macronutrients and Weight LossU01HL073286 · NHLBI · HARVARD UNIVERSITY (SCH OF PUBLIC HLTH) · PI SACKS, FRANK M · 2003 to 2008
$7.6M
Genetic Markers of CHD in Type 2 DiabetesR01HL071981 · NHLBI · HARVARD UNIVERSITY (SCH OF PUBLIC HLTH) · PI QI, LU · 2003 to 2012
$4.9M
Obesity Genes, Energy Regulation in Response to Weight-Loss DietsR01DK091718 · NIDDK · TULANE UNIVERSITY OF LOUISIANA · PI QI, LU · 2012 to 2021
$4.5M
NCRR NIH HHS M01 RR002635NCRR NIH HHS RR-02635NHLBI NIH HHS HL071981NHLBI NIH HHS HL073286NHLBI NIH HHS R01 HL071981NHLBI NIH HHS U01 HL073286NIDDK NIH HHS DK091718NIDDK NIH HHS DK46200NIDDK NIH HHS R01 DK091718
6 · The paper itself

Abstract

backgroundTCF7L2 gene variants have been associated with increased risk of type 2 diabetes and higher adiposity. Observational studies and short-term trials have suggested that macronutrients may modify these effects. However, to our knowledge, this has yet to be verified in long-term interventions.

objectiveIn a long-term intervention setting, we investigated the effects of TCF7L2 polymorphisms rs7903146 and rs12255372 and dietary total fat on changes in body composition and subsequent glycemic control.

designData were analyzed for 591 participants in the Preventing Overweight Using Novel Dietary Strategies (Pounds Lost) trial, which is a 2-y weight-loss randomized clinical trial of diets that differed in macronutrient proportions. Adjusted means for changes in body composition at 6 and 24 mo were obtained for gene main effects and interactions with a low-fat diet (20% from energy) compared with a high-fat diet (40% from energy). Interactions with protein and carbohydrate intakes were also tested. Predicted changes in glycemic control from changes in adiposity were determined by genotype and diet type.

resultsSignificant interactions were observed for rs12255372 TT (risk genotype) and fat intake for changes in BMI, total fat mass, and trunk fat mass (all P/q < 0.05) at 6 mo, with nonsignificant larger decreases for TT carriers on a low-fat diet. No significant associations were observed at 24 mo or for other macronutrients. Changes in body composition for TT carriers predicted reductions in plasma glucose and insulin only on the low-fat diet.

conclusionsIndividuals with the TCF7L2 rs12255372 risk genotype may reduce body adiposity by consuming a diet lower in total fat. These reductions may induce better glycemic control for such individuals predisposed to type 2 diabetes. The Pounds Lost trial was registered at clinicaltrials.gov as NCT00072995.

Indexed as

Weight Reduction ProgramsAbsorptiometry, PhotonAdiposityAdultAgedBody CompositionDietary FatsDNAFemaleGenetic VariationGenotypeHumansLinear ModelsLongitudinal StudiesMaleMiddle AgedDietary FatsDNATCF7L2 protein, humanTranscription Factor 7-Like 2 Protein

Identifiers

PMID23034957
PMCPMC3471200

What OpenQuestion holds

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Registered trials

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.