Evidence map›Paper›PMID 22541248›Full record

Trial reportThe Journal of allergy and clinical immunology2012

IL-4 receptor polymorphisms predict reduction in asthma exacerbations during response to an anti-IL-4 receptor α antagonist.

Rebecca E Slager, Babatunde A Otulana, Gregory A Hawkins, Yu Ping Yen, Stephen P Peters, Sally E Wenzel, Deborah A Meyers, Eugene R Bleecker

Open access · greenAbstract readClinical Trial, Phase IIRandomized Controlled Trial
In one paragraph

Trial report in The Journal of allergy and clinical immunology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 52 papers.

0numbers the graph read from it
0cells of the map it votes in
52citing papers in PubMed
11.0field-weighted citation impact, top 1% 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

52 citing papers in PubMed, 153 citations in OpenAlex.

  1. Trial
  2. Review
  3. Independent association of a 17q21 variant with exacerbations in type 2-low adult asthma.The journal of allergy and clinical immunology. Global · 2025
    Article
  4. Review
  5. Article
  6. ERJ open research · 2025
    Article
  7. Review
  8. IL-4 drives exhaustion of CD8Nature communications · 2024
    Article
  9. Article
  10. Review
  11. Review
  12. Article
  13. Gene polymorphisms in asthma: a narrative review.Annals of translational medicine · 2022
    Review
  14. Review
  15. Article
  16. Review
  17. Article
  18. Review
  19. The use of biologics for immune modulation in allergic disease.The Journal of clinical investigation · 2019
    Review
  20. 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

8 authors at 2 institutions in 1 country.

Rebecca E SlagerCenter for Genomics and Personalized Medicine Research, Wake Forest School of Medicine, Winston-Salem, NC 27157, USA.
Babatunde A Otulana
Gregory A Hawkins
Yu Ping Yen
Stephen P Peters
Sally E Wenzel
Deborah A Meyers
Eugene R Bleecker
Wake Forest University · USUniversity of Pittsburgh Medical Center · US

Funding

THE PHARMACOGENETICS OF ASTHMA TREATMENTU01HL065899 · NHLBI · BRIGHAM AND WOMEN'S HOSPITAL · PI TANTISIRA, KELAN G, WEISS, SCOTT T · 2000 to 2014
$38.5M
Linking Genetics, Genomics and Phenomics to Better Understand Asthma SeverityRC2HL101487 · NHLBI · WAKE FOREST UNIVERSITY HEALTH SCIENCES · PI BLEECKER, EUGENE ROLAND, KAMINSKI, NAFTALI · 2009 to 2010
$3.5M
Scholars' Program in the Genetics and Genomics of Lung DiseasesK12HL089992 · NHLBI · WAKE FOREST UNIVERSITY HEALTH SCIENCES · PI MEYERS, DEBORAH A. · 2007 to 2012
$2.0M
NHLBI NIH HHS HL065899NHLBI NIH HHS HL089992NHLBI NIH HHS HL101487NHLBI NIH HHS K12 HL089992NHLBI NIH HHS RC2 HL101487NHLBI NIH HHS U01 HL065899
6 · The paper itself

Abstract

backgroundThis is the first large pharmacogenetic investigation of the inflammatory IL-4/IL-13 pathway in patients with moderate-to-severe asthma. We analyzed genomic DNA from participants in a 12-week placebo-controlled efficacy trial of pitrakinra (1, 3, or 10 mg twice daily), a novel IL-4/IL-13 pathway antagonist (Clinicaltrials.govNCT00801853).

objectivesThe primary hypothesis for this analysis is that amino acid changes in the 3' end of the IL-4 receptor α gene (IL4RA) or closely proximal variants would predict reductions in asthma exacerbations for subjects randomized to pitrakinra therapy.

methodsNineteen IL4RA single nucleotide polymorphisms (SNPs) were tested in 407 non-Hispanic white subjects for association with the primary clinical end point of asthma exacerbations and changes in secondary end points for asthma symptom scores.

resultsThe most consistent pharmacogenetic associations were observed for the correlated tagging SNPs rs8832 and rs1029489 in the IL4RA 3' untranslated and proximal regions, respectively. Subjects homozygous for the rs8832 common G allele randomized to pitrakinra (placebo group nonsignificant) had decreased asthma exacerbations and decreased nocturnal awakenings and activities limited by asthma. There was also a significant pitrakinra dose-response relationship (placebo/1 mg/3 mg/10 mg) for exacerbations in subjects homozygous for the common allele in rs1029489 (P = .005) and rs8832 (P= .009) and the intronic SNPs rs3024585, rs3024622, and rs4787956 (P = .03).

conclusionThis study demonstrates a significant pharmacogenetic interaction between anti-IL-4 receptor α therapy and IL4RA gene variation, identifying an asthma subgroup that is more responsive to therapy with this antagonist.

Indexed as

3' Untranslated RegionsAdultAllelesAnti-Asthmatic AgentsAsthmaDose-Response Relationship, DrugDouble-Blind MethodDrug Administration ScheduleFemaleHomozygoteHumansInterleukin-13Interleukin-4Interleukin-4 Receptor alpha SubunitMaleMiddle Aged3' Untranslated RegionsAnti-Asthmatic AgentsIL4R protein, humanInterleukin-13Interleukin-4Interleukin-4 Receptor alpha SubunitpitrakinraPlacebos

Identifiers

PMID22541248
PMCPMC3992925
OpenAlexW1995908153

What OpenQuestion holds

Textmetadata
LicenceTDM
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.