Evidence map›Paper›PMID 28049827›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2017

ERAP1 association with ankylosing spondylitis is attributable to common genotypes rather than rare haplotype combinations.

Amity R Roberts, Louise H Appleton, Adrian Cortes, Matteo Vecellio, Jonathan Lau, Laura Watts, Matthew A Brown, Paul Wordsworth

Open access · bronzeAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 2 pooled it
4.6field-weighted citation impact, top 5% 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

22 citing papers in PubMed, 2 syntheses or guidelines pooled it, 38 citations in OpenAlex.

  1. Pooled it
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  6. FunctionalCells · 2022
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  20. Reply to Reeves et al.: No evidence for rareProceedings of the National Academy of Sciences of the United States of America · 2017
    Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors at 4 institutions in 2 countries.

Amity R RobertsNuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford OX3 7LD, United Kingdom.
Louise H AppletonNuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford OX3 7LD, United Kingdom.
Adrian CortesNuffield Department of Clinical Neurosciences, Division of Clinical Neurology, John Radcliffe Hospital, University of Oxford, Oxford OX3 9DU, United Kingdom.
Matteo VecellioNuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford OX3 7LD, United Kingdom.
Jonathan LauNuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford OX3 7LD, United Kingdom.
Laura WattsNuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford OX3 7LD, United Kingdom.
Matthew A BrownInstitute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, QLD 4102, Australia.
Paul WordsworthNuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford OX3 7LD, United Kingdom; paul.wordsworth@ndorms.ox.ac.uk.
National Institute for Health Research · GBUniversity of Oxford · GBNuffield Orthopaedic Centre · GBTranslational Research Institute · AU

Funding

Arthritis Research UK 19356Versus Arthritis 20402Versus Arthritis 20796
6 · The paper itself

Abstract

We investigated the proposal that ankylosing spondylitis (AS) is associated with unusual ERAP1 genotypes. ERAP1 haplotypes were constructed for 213 AS cases and 46 rheumatoid arthritis controls using family data. Haplotypes were generated from five common ERAP1 single nucleotide polymorphisms (SNPs)-rs2287987 (M349V), rs30187 (K528R), rs10050860 (D575N), rs17482078 (R725Q), and rs27044 (Q730E). Haplotype frequencies were compared using Fisher's exact test. ERAP1 haplotypes imputed from the International Genetics of AS Consortium (IGAS) Immunochip study were also studied. In the family study, we identified only four common ERAP1 haplotypes ("VRNQE," "MKDRQ," "MRDRE," and "MKDRE") in both AS cases and controls apart from two rare (<0.5%) previously unreported haplotypes. There were no examples of the unusual ERAP1 haplotype combination ("*001/*005") previously reported by others in 53% of AS cases. As expected, K528-bearing haplotypes were increased in the AS family study (AS 43% vs. control 35%), due particularly to an increase in the MKDRQ haplotype (AS 35% vs. control 25%, P = 0.01). This trend was replicated in the imputed Immunochip data for the two K528-bearing haplotypes MKDRQ (AS 33% vs. controls 27%, P = 1.2 × 10

Indexed as

AminopeptidasesArthritis, RheumatoidCase-Control StudiesFemaleGene FrequencyGenetic Predisposition to DiseaseGenotypeHaplotypesHLA-B27 AntigenHumansMaleMinor Histocompatibility AntigensPolymorphism, Single NucleotideSpondylitis, AnkylosingAminopeptidasesERAP1 protein, humanHLA-B27 AntigenMinor Histocompatibility Antigensankylosing spondylitisERAP1haplotypes

Identifiers

PMID28049827
PMCPMC5255627
OpenAlexW2563448492

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

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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.