Evidence map›Paper›PMID 29051501›Full record

ArticleScientific reports2017

Branched-chain amino acids and Alzheimer's disease: a Mendelian randomization analysis.

Susanna C Larsson, Hugh S Markus

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 52 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
52citing papers in PubMed, 1 pooled it
3.4field-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

52 citing papers in PubMed, 1 synthesis or guideline pooled it, 73 citations in OpenAlex.

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  17. [Change of plasma level of valine and its relationship with developmental quotient in children with autism].Beijing da xue xue bao. Yi xue ban = Journal of Peking University. Health sciences · 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

2 authors at 2 institutions in 2 countries.

Susanna C LarssonUnit of Nutritional Epidemiology, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden. susanna.larsson@ki.se.ORCID 0000-0003-0118-0341
Hugh S MarkusStroke Research Group, Department of Clinical Neurosciences, University of Cambridge, Cambridge, United Kingdom.
Karolinska Institutet · SEUniversity of Cambridge · GB

Funding

National Centralized Repository for Alzheimer's Disease and Related Dementias (NCRAD)U24AG021886 · NIA · INDIANA UNIV-PURDUE UNIV AT INDIANAPOLIS · PI TATIANA M. FOROUD · 2002 to 2026
$119.8M
NATIONAL ALZHEIMERS COORDINATING CENTER (NACC)U01AG016976 · NIA · UNIVERSITY OF WASHINGTON · PI KUKULL, WALTER ANTHONY · 1999 to 2020
$72.8M
Alzheimer's Disease Genetics ConsortiumU01AG032984 · NIA · UNIVERSITY OF PENNSYLVANIA · PI SCHELLENBERG, GERARD DAVID · 2009 to 2024
$60.4M
CHARGE Consortium: Omics Discovery for CVD and Aging PhenotypesR01HL105756 · NHLBI · UNIVERSITY OF WASHINGTON · PI Bruce M Psaty, NICHOLAS L SMITH · 2011 to 2026
$9.5M
Collaborative GWAS of Dementia, AD and related MRI and Cognitive EndophenotypesR01AG033193 · NIA · BOSTON UNIVERSITY MEDICAL CAMPUS · PI SESHADRI, SUDHA · 2009 to 2016
$4.4M
Medical Research Council 503480NHLBI NIH HHS R01 HL105756NIA NIH HHS R01 AG033193NIA NIH HHS U01 AG016976NIA NIH HHS U01 AG032984NIA NIH HHS U24 AG021886Wellcome TrustWellcome Trust 082604/2/07/Z
6 · The paper itself

Abstract

We conducted a two-sample Mendelian randomization study to test the hypothesis that raised plasma levels of the branched-chain amino acids isoleucine, leucine, and valine are associated with Alzheimer's disease (AD). From a genome-wide association study of 16,596 individuals of European ancestry, we obtained summary statistics for four independent single nucleotide polymorphisms (SNPs) associated with isoleucine levels and one SNP associated with both leucine and valine levels at genome-wide significance. Summary statistics of the associations of the five SNPs with AD were obtained from the International Genomics of Alzheimer's Project (17,008 AD cases and 37,154 controls). Based on four SNPs, the odds ratio of AD per genetically predicted one standard deviation higher isoleucine levels was 1.35 (95% CI, 1.08-1.69; p = 0.007). The leucine- and valine-raising allele was not associated with AD (p = 0.46). These data suggest that a genetic predisposition to raised plasma isoleucine levels is positively associated with AD.

Indexed as

Alzheimer DiseaseAmino Acids, Branched-ChainDEAD-box RNA HelicasesGenetic PleiotropyGenetic Predisposition to DiseaseGenome-Wide Association StudyHumansIsoleucineMendelian Randomization AnalysisNerve Tissue ProteinsNucleocytoplasmic Transport ProteinsOdds RatioPolymorphism, Single NucleotideProtein Phosphatase 2CProtein PrecursorsAmino Acids, Branched-ChainCBLN1 protein, humanDDX19B protein, humanDEAD-box RNA HelicasesIsoleucineNerve Tissue ProteinsNucleocytoplasmic Transport ProteinsPPM1K protein, humanProtein Phosphatase 2CProtein Precursors

Identifiers

PMID29051501
PMCPMC5648806
OpenAlexW2762504381

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.