Evidence map›Paper›PMID 26133275›Full record

ArticleGenes and immunity2015

Nonallelic homologous recombination of the FCGR2/3 locus results in copy number variation and novel chimeric FCGR2 genes with aberrant functional expression.

S Q Nagelkerke, C E Tacke, W B Breunis, J Geissler, J W R Sins, B Appelhof, T K van den Berg, M de Boer, T W Kuijpers

Abstract read
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In one paragraph

Article in Genes and immunity, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
2.7field-weighted citation impact, top 11% 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

23 citing papers in PubMed, 32 citations in OpenAlex.

  1. FCGR Polymorphisms Influence Response to IL2 in Metastatic Renal Cell Carcinoma.Clinical cancer research : an official journal of the American Association for Cancer Research · 2017
    Trial
  2. Article
  3. Article
  4. Pitfalls When Determining HNA-1 Genotypes and Finding Novel Alleles.International journal of molecular sciences · 2024
    Article
  5. Review
  6. Article
  7. Article
  8. Article
  9. Frontiers in immunology · 2021
    Article
  10. Article
  11. An HIV Vaccine Protective Allele inFrontiers in immunology · 2021
    Article
  12. Review
  13. Article
  14. Article
  15. Review
  16. Review
  17. Review
  18. Article
  19. Article
  20. Neonatal Alloimmune Neutropenia.Transfusion medicine and hemotherapy : offizielles Organ der Deutschen Gesellschaft fur Transfusionsmedizin und Immunhamatologie · 2018
    Review
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 at 4 institutions in 1 country.

S Q NagelkerkeDepartment of Blood Cell Research, Sanquin Research and Landsteiner Laboratory, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands.
C E TackeDepartment of Pediatric Hematology, Immunology and Infectious Diseases, Emma Children's Hospital, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands.
W B BreunisDepartment of Pediatric Hematology, Immunology and Infectious Diseases, Emma Children's Hospital, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands.
J GeisslerDepartment of Blood Cell Research, Sanquin Research and Landsteiner Laboratory, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands.
J W R SinsDepartment of Pediatric Hematology, Immunology and Infectious Diseases, Emma Children's Hospital, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands.
B AppelhofDepartment of Genome Analysis, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands.
T K van den BergDepartment of Blood Cell Research, Sanquin Research and Landsteiner Laboratory, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands.
M de BoerDepartment of Blood Cell Research, Sanquin Research and Landsteiner Laboratory, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands.
T W KuijpersDepartment of Blood Cell Research, Sanquin Research and Landsteiner Laboratory, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands.
Emma Kinderziekenhuis · NLAcademic Medical Center · NLSanquin · NLUniversity of Amsterdam · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The human FCGR2/3 locus, containing five highly homologous genes encoding the major IgG receptors, shows extensive copy number variation (CNV) associated with susceptibility to autoimmune diseases. Having genotyped >4000 individuals, we show that all CNV at this locus can be explained by nonallelic homologous recombination (NAHR) of the two paralogous repeats that constitute the majority of the locus, and describe four distinct CNV regions (CNRs) with a highly variable prevalence in the population. Apart from CNV, NAHR events also created several hitherto unidentified chimeric FCGR2 genes. These include an FCGR2A/2C chimeric gene that causes a decreased expression of FcγRIIa on phagocytes, resulting in a decreased production of reactive oxygen species in response to immune complexes, compared with wild-type FCGR2A. Conversely, FCGR2C/2A chimeric genes were identified to lead to an increased expression of FCGR2C. Finally, a rare FCGR2B null-variant allele was found, in which a polymorphic stop codon of FCGR2C is introduced into one FCGR2B gene, resulting in a 50% reduction in protein expression. Our study on CNRs and the chimeric genes is essential for the correct interpretation of association studies on FCGR genes as a determinant for disease susceptibility, and may explain some as yet unidentified extreme phenotypes of immune-mediated disease.

Indexed as

AllelesDNA Copy Number VariationsGenetic Association StudiesGenetic Predisposition to DiseaseHomologous RecombinationHumansMutant Chimeric ProteinsPolymorphism, Single NucleotideReceptors, IgGFCGR2A protein, humanFCGR2B protein, humanMutant Chimeric ProteinsReceptors, IgG

Identifiers

PMID26133275
OpenAlexW1605924676

What OpenQuestion holds

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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.