Evidence map›Paper›PMID 23434286›Full record

ArticleThe Journal of allergy and clinical immunology2013

Maternal microchimerism protects against the development of asthma.

Emma E Thompson, Rachel A Myers, Gaixin Du, Tessa M Aydelotte, Christopher J Tisler, Debra A Stern, Michael D Evans, Penelope E Graves, Daniel J Jackson, Fernando D Martinez and 4 more

Open access · greenAbstract read
In one paragraph

Article in The Journal of allergy and clinical immunology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
2.8field-weighted citation impact, top 10% 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

19 citing papers in PubMed, 33 citations in OpenAlex.

  1. Article
  2. Identifying Key Questions and Challenges in Microchimerism Biology.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025
    Article
  3. Article
  4. Review
  5. Lung stem cells and respiratory epithelial chimerism in transplantation.European respiratory review : an official journal of the European Respiratory Society · 2025
    Review
  6. Article
  7. Review
  8. Review
  9. Article
  10. Article
  11. Review
  12. Article
  13. Article
  14. Review
  15. Review
  16. Article
  17. Advances in pediatric asthma in 2013: coordinating asthma care.The Journal of allergy and clinical immunology · 2014
    Article
  18. Article
  19. Article
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

14 authors at 4 institutions in 2 countries.

Emma E ThompsonDepartment of Human Genetics, University of Chicago, Chicago, Ill., USA. eethomps@uchicago.edu
Rachel A Myers
Gaixin Du
Tessa M Aydelotte
Christopher J Tisler
Debra A Stern
Michael D Evans
Penelope E Graves
Daniel J Jackson
Fernando D Martinez
James E Gern
Anne L Wright
Robert F Lemanske
Carole Ober
University of Wisconsin–Madison · USUniversity of Arizona · USUniversity of Chicago · USFred Hutch Cancer Center · US

Funding

Virus-Bacterial Interactions and Exacerba of AsthmaP01HL070831 · NHLBI · UNIVERSITY OF WISCONSIN-MADISON · PI LEMANSKE, ROBERT F · 2002 to 2017
$31.3M
MATERNAL INFLUENCES ON CHILDHOOD ASTHMAR01AI042268 · NIAID · UNIVERSITY OF ARIZONA · PI WRIGHT, ANNE L. · 1998 to 2012
$8.1M
Sex-Specific Genetic Architecture of Asthma-Associated Quantitative TraitsR01HL085197 · NHLBI · UNIVERSITY OF CHICAGO · PI OBER, CAROLE · 2007 to 2015
$7.6M
Multidisciplinary Research Training in Asthma Genetics & GenomicsK12HL090003 · NHLBI · UNIVERSITY OF CHICAGO · PI SOLWAY, JULIAN · 2007 to 2012
$2.0M
NHLBI NIH HHS K12 HL090003NHLBI NIH HHS P01 HL070831NHLBI NIH HHS R01 HL085197NIAID NIH HHS AI 42268NIAID NIH HHS R01 AI042268
6 · The paper itself

Abstract

backgroundMaternal asthma and child's sex are among the most significant and reproducible risk factors for the development of asthma. Although the mechanisms for these effects are unknown, they likely involve nonclassical genetic mechanisms. One such mechanism could involve the transfer and persistence of maternal cells to her offspring, a common occurrence known as maternal microchimerism (MMc). MMc has been associated with many autoimmune diseases but has not been investigated for a role in asthma or allergic disease.

objectiveWe hypothesized that some of the observed risks for asthma may be due to different rates of transmission or persistence of maternal cells to children of mothers with asthma compared with children of mothers without asthma, or to sons compared with daughters. We further hypothesized that rates of MMc differ between children with and without asthma.

methodsWe tested these hypotheses in 317 subjects from 3 independent cohorts by using a real-time quantitative PCR assay to detect a noninherited HLA allele in the child.

resultsMMc was detected in 20.5% of the subjects (range 16.8%-27.1% in the 3 cohorts). We observed lower rates of asthma among MMc-positive subjects than among MMc-negative subjects (odds ratio, 0.38; 95% CI, 0.19-0.79; P = .029). Neither maternal asthma nor sex of the child was a significant predictor of MMc in the child (P = .81 and .15, respectively).

conclusionsOur results suggest for the first time that MMc may protect against the development of asthma.

Indexed as

ChimerismAdolescentAdultAsthmaChildChild, PreschoolCohort StudiesFemaleHumansInfantLogistic ModelsMalePregnancy

Identifiers

PMID23434286
PMCPMC3700564
OpenAlexW2045647992

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.