Evidence map›Paper›PMID 26290572›Full record

ArticleG3 (Bethesda, Md.)2015

Identification and Correction of Sample Mix-Ups in Expression Genetic Data: A Case Study.

Karl W Broman, Mark P Keller, Aimee Teo Broman, Christina Kendziorski, Brian S Yandell, Śaunak Sen, Alan D Attie

Open access · goldAbstract read
In one paragraph

Article in G3 (Bethesda, Md.), 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
2.0field-weighted citation impact, top 13% 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

12 citing papers in PubMed, 28 citations in OpenAlex.

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  9. Linkage disequilibrium matches forensic genetic records to disjoint genomic marker sets.Proceedings of the National Academy of Sciences of the United States of America · 2017
    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.

Karl W BromanDepartment of Biostatistics and Medical Informatics, University of Wisconsin, Madison, Wisconsin 53706 kbroman@biostat.wisc.edu.ORCID http://orcid.org/0000-0002-4914-6671
Mark P KellerDepartment of Biochemistry, University of Wisconsin, Madison, Wisconsin 53706.
Aimee Teo BromanDepartment of Biostatistics and Medical Informatics, University of Wisconsin, Madison, Wisconsin 53706.ORCID http://orcid.org/0000-0003-3783-2807
Christina KendziorskiDepartment of Biostatistics and Medical Informatics, University of Wisconsin, Madison, Wisconsin 53706.
Brian S YandellDepartment of Statistics, University of Wisconsin, Madison, Wisconsin 53706 Department of Horticulture, University of Wisconsin, Madison, Wisconsin 53706.ORCID http://orcid.org/0000-0002-8774-9377
Śaunak SenDepartment of Epidemiology and Biostatistics, University of California, San Francisco, California 94107.ORCID http://orcid.org/0000-0003-4519-6361
Alan D AttieDepartment of Biochemistry, University of Wisconsin, Madison, Wisconsin 53706.
University of Wisconsin–Madison · USUniversity of California, San Francisco · US

Funding

Systems Genetic Analysis of Multi-parent CrossesR01GM070683 · NIGMS · JACKSON LABORATORY · PI BROMAN, KARL W, CHURCHILL, GARY A · 2004 to 2022
$6.8M
Genetic Mapping of Networks Associated with Beta-cell D*R01DK066369 · NIDDK · UNIVERSITY OF WISCONSIN-MADISON · PI ATTIE, ALAN D · 2004 to 2014
$6.3M
Statistical Methods and Software for QTL MappingR01GM074244 · NIGMS · UNIVERSITY OF WISCONSIN-MADISON · PI BROMAN, KARL W · 2005 to 2013
$2.3M
NIDDK NIH HHS DK066369NIDDK NIH HHS R01 DK066369NIGMS NIH HHS GM012756NIGMS NIH HHS GM074244NIGMS NIH HHS R01 GM070683NIGMS NIH HHS R01 GM074244
6 · The paper itself

Abstract

In a mouse intercross with more than 500 animals and genome-wide gene expression data on six tissues, we identified a high proportion (18%) of sample mix-ups in the genotype data. Local expression quantitative trait loci (eQTL; genetic loci influencing gene expression) with extremely large effect were used to form a classifier to predict an individual's eQTL genotype based on expression data alone. By considering multiple eQTL and their related transcripts, we identified numerous individuals whose predicted eQTL genotypes (based on their expression data) did not match their observed genotypes, and then went on to identify other individuals whose genotypes did match the predicted eQTL genotypes. The concordance of predictions across six tissues indicated that the problem was due to mix-ups in the genotypes (although we further identified a small number of sample mix-ups in each of the six panels of gene expression microarrays). Consideration of the plate positions of the DNA samples indicated a number of off-by-one and off-by-two errors, likely the result of pipetting errors. Such sample mix-ups can be a problem in any genetic study, but eQTL data allow us to identify, and even correct, such problems. Our methods have been implemented in an R package, R/lineup.

Indexed as

Gene ExpressionAnimalsChromosome MappingComputational BiologyGene Expression ProfilingGenome-Wide Association StudyGenomicsGenotypeLod ScoreMicePhenotypeQuantitative Trait LociTranscriptomeeQTLgenetical genomicsmicroarraysmislabeling errorsquality control

Identifiers

PMID26290572
PMCPMC4592999
OpenAlexW2150521668

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.