Evidence map›Paper›PMID 31581152›Full record

ArticleJCI insight2019

A20 as an immune tolerance factor can determine islet transplant outcomes.

Nathan W Zammit, Stacey N Walters, Karen L Seeberger, Philip J O'Connell, Gregory S Korbutt, Shane T Grey

Open access · goldAbstract read
In one paragraph

Article in JCI insight, 2019. 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
3.8field-weighted citation impact, top 7% 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, 35 citations in OpenAlex.

  1. Review
  2. Cell Therapy for Type 1 Diabetes Mellitus: a Review of Clinical Trials.Bulletin of experimental biology and medicine · 2025
    Review
  3. Article
  4. Article
  5. Review
  6. Article
  7. Review
  8. Article
  9. Article
  10. Article
  11. Prevention of Type 1 Diabetes in Children: A Worthy Challenge?International journal of environmental research and public health · 2023
    Review
  12. Engineering pancreatic islets with a novel form of thrombomodulin protein to overcome early graft loss triggered by instant blood-mediated inflammatory reaction.American journal of transplantation : official journal of the American Society of Transplantation and the American Society of Transplant Surgeons · 2023
    Article
  13. Review
  14. Case Report: A novel mutation inFrontiers in endocrinology · 2023
    Article
  15. Article
  16. Review
  17. Genetic Engineering of Immune Evasive Stem Cell-Derived Islets.Transplant international : official journal of the European Society for Organ Transplantation · 2022
    Review
  18. Review
  19. Review
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 3 institutions in 2 countries.

Nathan W ZammitImmunology Department, Garvan Institute of Medical Research, Darlinghurst, New South Wales, Australia.
Stacey N WaltersImmunology Department, Garvan Institute of Medical Research, Darlinghurst, New South Wales, Australia.
Karen L SeebergerDepartment of Surgery, University of Alberta, Edmonton, Alberta, Canada.
Philip J O'ConnellCentre for Transplant and Renal Research, Westmead Institute for Medical Research, University of Sydney at Westmead Hospital, NSW Australia.
Gregory S KorbuttDepartment of Surgery, University of Alberta, Edmonton, Alberta, Canada.
Shane T GreyImmunology Department, Garvan Institute of Medical Research, Darlinghurst, New South Wales, Australia.
Garvan Institute of Medical Research · AUUniversity of Alberta · CAWestmead Institute for Medical Research · AU

Funding

CIHR MOP 119500
6 · The paper itself

Abstract

Islet transplantation can restore lost glycemic control in type 1 diabetes subjects but is restricted in its clinical application by a limiting supply of islets and the need for heavy immune suppression to prevent rejection. TNFAIP3, encoding the ubiquitin editing enzyme A20, regulates the activation of immune cells by raising NF-κB signaling thresholds. Here, we show that increasing A20 expression in allogeneic islet grafts resulted in permanent survival for ~45% of recipients, and > 80% survival when combined with subtherapeutic rapamycin. Allograft survival was dependent upon Tregs and was antigen specific, and grafts showed reduced expression of inflammatory factors. Transplantation of islets with A20 containing a loss-of-function variant (I325N) resulted in increased RIPK1 ubiquitination and NF-κB signaling, graft hyperinflammation, and acute allograft rejection. Overexpression of A20 in human islets potently reduced expression of inflammatory mediators, with no impact on glucose-stimulated insulin secretion. Therapeutic administration of A20 raises inflammatory signaling thresholds to favor immune tolerance and promotes islet allogeneic survival. Clinically, this would allow for reduced immunosuppression and support the use of alternate islet sources.

Indexed as

Islets of Langerhans TransplantationGraft SurvivalHumansImmune ToleranceTransplantation, HomologousTumor Necrosis Factor alpha-Induced Protein 3TNFAIP3 protein, humanTumor Necrosis Factor alpha-Induced Protein 3Gene therapyInflammationIslet cellsTransplantation

Identifiers

PMID31581152
PMCPMC6948770
OpenAlexW2977856631

What OpenQuestion holds

Textmetadata
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.