Evidence map›Paper›PMID 22322675›Full record

SynthesisImmunogenetics2012

IL1RN genetic variations and risk of IPF: a meta-analysis and mRNA expression study.

Nicoline M Korthagen, Coline H M van Moorsel, Karin M Kazemier, Henk J T Ruven, Jan C Grutters

Open access · hybridAbstract readMeta-Analysis
In one paragraph

Synthesis in Immunogenetics, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed, 4 pooled it
6.1field-weighted citation impact, top 3% 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

33 citing papers in PubMed, 4 syntheses or guidelines pooled it, 72 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Pooled it
  5. Article
  6. Review
  7. Review
  8. Article
  9. Article
  10. Review
  11. Article
  12. Review
  13. Review
  14. Insights into the Pathogenesis of Pulmonary Fibrosis from Genetic Diseases.American journal of respiratory cell and molecular biology · 2022
    Review
  15. Review
  16. Review
  17. Review
  18. Review
  19. Observational
  20. Immune dysregulation as a driver of idiopathic pulmonary fibrosis.The Journal of clinical investigation · 2021
    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

5 authors at 2 institutions in 1 country.

Nicoline M KorthagenDepartment of Pulmonology, St. Antonius Hospital, PO Box 2500, 3430 EM, Nieuwegein, The Netherlands.
Coline H M van Moorsel
Karin M Kazemier
Henk J T Ruven
Jan C Grutters
University Medical Center Utrecht · NLSt. Antonius Ziekenhuis · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Idiopathic pulmonary fibrosis (IPF) is a rare and devastating lung disease of unknown aetiology. Genetic variations in the IL1RN gene, encoding the interleukin-1 receptor antagonist (IL-1Ra), have been associated with IPF susceptibility. Several studies investigated the variable number tandem repeat (VNTR) or single nucleotide polymorphisms rs408392, rs419598 and rs2637988, with variable results. The aim of this study was to elucidate the influence of polymorphisms in IL1RN on IPF susceptibility and mRNA expression. We performed a meta-analysis of the five case-control studies that investigated an IL1RN polymorphism in IPF in a Caucasian population. In addition, we investigated whether IL1RN mRNA expression was influenced by IL1RN polymorphisms. The VNTR, rs408392 and rs419598 were in tight linkage disequilibrium, with D' > 0.99. Furthermore, rs2637988 was in linkage disequilibrium with the VNTR (D' = 0.90). A haploblock of VNTR*2 and the minor alleles of rs408392and rs419598 was constructed. Meta-analysis revealed that this VNTR*2 haploblock is associated with IPF susceptibility both with an allelic model (odds ratio = 1.42, p = 0.002) and a carriership model (odds ratio = 1.60, p = 0.002). IL1RN mRNA expression was significantly influenced by rs2637988, with lower levels found in carriers of the (minor) GG genotype (p < 0.001). From this meta-analysis, we conclude that the VNTR*2 haploblock is associated with susceptibility to IPF. In addition, polymorphisms in IL1RN influence IL-1Ra mRNA expression, suggesting that lower levels of IL-1Ra predispose to developing IPF. Together these findings demonstrate that the cytokine IL-1Ra plays a role in IPF pathogenesis.

Indexed as

Base SequenceDNA PrimersGene ExpressionGenetic Predisposition to DiseaseHumansIdiopathic Pulmonary FibrosisImmunogenetic PhenomenaInterleukin 1 Receptor Antagonist ProteinLinkage DisequilibriumMinisatellite RepeatsPolymorphism, Single NucleotideRisk FactorsRNA, MessengerDNA PrimersIL1RN protein, humanInterleukin 1 Receptor Antagonist ProteinRNA, Messenger

Identifiers

PMID22322675
PMCPMC3324677
OpenAlexW1969564910

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.