Evidence map›Paper›PMID 22526601›Full record

ArticleImmunogenetics2012

A combined DPA1~DPB1 amino acid epitope is the primary unit of selection on the HLA-DP heterodimer.

Jill A Hollenbach, Abeer Madbouly, Loren Gragert, Cynthia Vierra-Green, Susan Flesch, Stephen Spellman, Ann Begovich, Harriet Noreen, Elizabeth Trachtenberg, Tom Williams and 5 more

Open access · hybridAbstract read
In one paragraph

Article in Immunogenetics, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed
1.5field-weighted citation impact, top 18% 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

31 citing papers in PubMed, 56 citations in OpenAlex.

  1. Trial
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  5. Classical HLA Allele and Haplotype Frequency Estimates in US Populations.bioRxiv : the preprint server for biology · 2026
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  9. Gut · 2024
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  15. Human T cells recognize HLA-DP-bound peptides in two orientations.Proceedings of the National Academy of Sciences of the United States of America · 2022
    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

15 authors at 8 institutions in 3 countries.

Jill A HollenbachNational Marrow Donor Program, Minneapolis, MN, USA. jhollenbach@chori.org
Abeer Madbouly
Loren Gragert
Cynthia Vierra-Green
Susan Flesch
Stephen Spellman
Ann Begovich
Harriet Noreen
Elizabeth Trachtenberg
Tom Williams
Neng Yu
Bronwen Shaw
Katharina Fleischhauer
Marcelo Fernandez-Vina
Martin Maiers
National Marrow Donor Program · USAmerican Red Cross · USAnthony Nolan · GBFairview Southdale Hospital · USLa Roche College · USStanford University · USUniversity of New Mexico · USVita-Salute San Raffaele University · IT

Funding

The Role of HLA and KIR in Rheumatoid Arthritis and Crohn's DiseaseU01AI067068 · NIAID · STANFORD UNIVERSITY · PI ERLICH, HENRY A, TRACHTENBERG, ELIZABETH A · 2005 to 2014
$10.9M
NIAID NIH HHS U01 AI067068Telethon GGP08201
6 · The paper itself

Abstract

Here, we present results for DPA1 and DPB1 four-digit allele-level typing in a large (n = 5,944) sample of unrelated European American stem cell donors previously characterized for other class I and class II loci. Examination of genetic data for both chains of the DP heterodimer in the largest cohort to date, at the amino acid epitope, allele, genotype, and haplotype level, allows new insights into the functional units of selection and association for the DP heterodimer. The data in this study suggest that for the DPA1-DPB1 heterodimer, the unit of selection is the combined amino acid epitope contributed by both the DPA1 and DPB1 genes, rather than the allele, and that patterns of LD are driven primarily by dimer stability and conformation of the P1 pocket. This may help explain the differential pattern of allele frequency distribution observed for this locus relative to the other class II loci. These findings further support the notion that allele-level associations in disease and transplantation may not be the most important unit of analysis, and that they should be considered instead in the molecular context.

Indexed as

EpitopesAmino AcidsEpitope MappingGene FrequencyGenotypeHaplotypesHematopoietic Stem CellsHLA-DP alpha-ChainsHLA-DP beta-ChainsHumansLinkage DisequilibriumModels, MolecularPolymorphism, GeneticWhite PeopleAmino AcidsEpitopesHLA-DPA1 antigenHLA-DP alpha-ChainsHLA-DPB1 antigenHLA-DP beta-Chains

Identifiers

PMID22526601
PMCPMC3395342
OpenAlexW2102318722

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.