Evidence map›Paper›PMID 31500627›Full record

ArticleBMC medical genomics2019

Enhancer variants associated with Alzheimer's disease affect gene expression via chromatin looping.

Masataka Kikuchi, Norikazu Hara, Mai Hasegawa, Akinori Miyashita, Ryozo Kuwano, Takeshi Ikeuchi, Akihiro Nakaya

Open access · goldAbstract read
In one paragraph

Article in BMC medical genomics, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 43 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
43citing papers in PubMed, 1 pooled it
3.7field-weighted citation impact, top 6% 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

43 citing papers in PubMed, 1 synthesis or guideline pooled it, 75 citations in OpenAlex.

  1. Pooled it
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  8. Review
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  11. Gene networks and systems biology in Alzheimer's disease: Insights from multi-omics approaches.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2024
    Review
  12. Review
  13. Article
  14. Functional genomics identify causal variant underlying the protective CTSH locus for Alzheimer's disease.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2023
    Article
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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

7 authors at 2 institutions in 1 country.

Masataka KikuchiDepartment of Genome Informatics, Graduate School of Medicine, Osaka University, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan. kikuchi@gi.med.osaka-u.ac.jp.ORCID http://orcid.org/0000-0002-9562-841X
Norikazu HaraDepartment of Molecular Genetics, Brain Research Institute, Niigata University, Niigata, Japan.
Mai HasegawaDepartment of Genome Informatics, Graduate School of Medicine, Osaka University, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan.
Akinori MiyashitaDepartment of Molecular Genetics, Brain Research Institute, Niigata University, Niigata, Japan.
Ryozo KuwanoDepartment of Molecular Genetics, Brain Research Institute, Niigata University, Niigata, Japan.
Takeshi IkeuchiDepartment of Molecular Genetics, Brain Research Institute, Niigata University, Niigata, Japan.
Akihiro NakayaDepartment of Genome Informatics, Graduate School of Medicine, Osaka University, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan. nakaya@gi.med.osaka-u.ac.jp.
Niigata University · JPThe University of Osaka · JP

Funding

Japan Agency for Medical Research and Development An Integrated Database of Clinical and Genomic InformationJapan Agency for Medical Research and Development A Research and Development Grants for DementiaJapan Science and Technology Agency 16K07222Japan Science and Technology Agency 17K15049Japan Science and Technology Agency 22129004Japan Science and Technology Agency 24310144Japan Science and Technology Agency 24651221
6 · The paper itself

Abstract

backgroundGenome-wide association studies (GWASs) have identified single-nucleotide polymorphisms (SNPs) that may be genetic factors underlying Alzheimer's disease (AD). However, how these AD-associated SNPs (AD SNPs) contribute to the pathogenesis of this disease is poorly understood because most of them are located in non-coding regions, such as introns and intergenic regions. Previous studies reported that some disease-associated SNPs affect regulatory elements including enhancers. We hypothesized that non-coding AD SNPs are located in enhancers and affect gene expression levels via chromatin loops.

methodsTo characterize AD SNPs within non-coding regions, we extracted 406 AD SNPs with GWAS p-values of less than 1.00 × 10

resultsWe report the following findings: (1) nearly 30% of non-coding AD SNPs are located in enhancers; (2) eQTL genes affected by non-coding AD SNPs within enhancers are associated with amyloid beta clearance, synaptic transmission, and immune responses; (3) 95% of the AD SNPs located in enhancers co-localize with their eQTL genes in topologically associating domains suggesting that regulation may occur through chromatin higher-order structures; (4) rs1476679 spatially contacts the promoters of eQTL genes via CTCF-CTCF interactions; (5) the effect of other AD SNPs such as rs7364180 is likely to be, at least in part, indirect through regulation of transcription factors that in turn regulate AD associated genes.

conclusionOur results suggest that non-coding AD SNPs may affect the function of enhancers thereby influencing the expression levels of surrounding or distant genes via chromatin loops. This result may explain how some non-coding AD SNPs contribute to AD pathogenesis.

Indexed as

Gene Expression RegulationGenetic VariationNucleic Acid ConformationAlzheimer DiseaseBinding SitesCCCTC-Binding FactorChromatinEnhancer Elements, GeneticHumansPolymorphism, Single NucleotideQuantitative Trait LociCCCTC-Binding FactorChromatinAlzheimer’s diseaseChromatin higher-order structureGenome-wide association studyNon-coding variants

Identifiers

PMID31500627
PMCPMC6734281
OpenAlexW2972895026

What OpenQuestion holds

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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.