Evidence map›Paper›PMID 16341549›Full record

SynthesisHuman genetics2006

Towards compendia of negative genetic association studies: an example for Alzheimer disease.

Mia E-L Blomqvist, Chandra Reynolds, Hagit Katzov, Lars Feuk, Niels Andreasen, Nenad Bogdanovic, Kaj Blennow, Anthony J Brookes, Jonathan A Prince

Abstract readMeta-Analysis
PubMed Publisher
In one paragraph

Synthesis in Human genetics, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 7 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing 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.

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

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

  1. Pooled it
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  3. Polymorphisms of CHAT but not TFAM or VR22 are Associated with Alzheimer Disease Risk.Medical science monitor : international medical journal of experimental and clinical research · 2016
    Pooled it
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  8. Article
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  11. Association of the RAGE G82S polymorphism with Alzheimer's disease.Journal of neural transmission (Vienna, Austria : 1996) · 2010
    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

9 authors.

Mia E-L BlomqvistCenter for Genomics and Bioinformatics, Karolinska Institute, Berzeliusvag 35, 171 77 Stockholm, Sweden.
Chandra Reynolds
Hagit Katzov
Lars Feuk
Niels Andreasen
Nenad Bogdanovic
Kaj Blennow
Anthony J Brookes
Jonathan A Prince

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Most genetic sequence variants that contribute to variability in complex human traits will have small effects that are not readily detectable with population samples typically used in genetic association studies. A potentially valuable tool in the gene discovery process is meta-analysis of the accumulated published data, but in order to be valid these require a sample of studies representative of the true genetic effect and thus hypothetically should include some positive and an abundance of negative reports. A survey of the literature on association studies for Alzheimer disease (AD) from January 2004-April 2005, identified 138 studies, 86 of which reported positive findings other than for apolipoprotein E (APOE), strongly indicative of publication bias. We report here an analysis of 62 genetic markers, tested for association with AD risk as well as for possible effects upon quantitative indices of AD severity (mini-mental state examination scores, age-at-onset, and cerebrospinal fluid (CSF) beta-amyloid (Abeta) and CSF tau proteins). Within this set, only modest signals were present that, with the exception of APOE are easily lost when corrections for multiple hypotheses are applied. In isolation, results are thus broadly negative. Genes studied encompass both novel candidates as well as several recently claimed to be associated with AD (e.g. urokinase plasminogen activator (PLAU) and acetyl-coenzyme A acetyltransferase 1 (ACAT1)). By reporting these data we hope to encourage the publication of gene compendia to guide further studies and aid future meta-analyses aimed at resolving the involvement of genes in complex human traits.

Indexed as

AgedAged, 80 and overAlzheimer DiseaseAmyloid beta-PeptidesAnalysis of VarianceApolipoproteins EFemaleGene FrequencyGenetic Predisposition to DiseaseGenotypeHumansMaleMiddle AgedPeptide FragmentsPeptidyl-Dipeptidase APolymorphism, Single NucleotideAmyloid beta-Peptidesamyloid beta-protein (1-42)Apolipoproteins EPeptide FragmentsPeptidyl-Dipeptidase Atau Proteins

Identifiers

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.