Evidence map›Paper›PMID 28303661›Full record

ArticleXenotransplantation2017

Immunological and physiological observations in baboons with life-supporting genetically engineered pig kidney grafts.

Hayato Iwase, Hidetaka Hara, Mohamed Ezzelarab, Tao Li, Zhongqiang Zhang, Bingsi Gao, Hong Liu, Cassandra Long, Yi Wang, Amy Cassano and 6 more

Abstract read
In one paragraph

Article in Xenotransplantation, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 111 papers.

0numbers the graph read from it
0cells of the map it votes in
111citing papers in PubMed
24.8field-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

111 citing papers in PubMed, 214 citations in OpenAlex.

  1. Review
  2. Progress of transgenic pigs in liver xenotransplantation.Liver research (Beijing, China) · 2026
    Article
  3. Review
  4. Article
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  16. Review
  17. Review
  18. Complement, Coagulation, and Fibrinolysis: The Role of the Endothelium and Its Glycocalyx Layer in Xenotransplantation.Transplant international : official journal of the European Society for Organ Transplantation · 2024
    Review
  19. Review
  20. Review

51 more citing papers are in PubMed but not listed here.

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

16 authors at 4 institutions in 2 countries.

Hayato IwaseThomas E. Starzl Transplantation Institute, University of Pittsburgh, Pittsburgh, PA, USA.
Hidetaka HaraThomas E. Starzl Transplantation Institute, University of Pittsburgh, Pittsburgh, PA, USA.
Mohamed EzzelarabThomas E. Starzl Transplantation Institute, University of Pittsburgh, Pittsburgh, PA, USA.
Tao LiThomas E. Starzl Transplantation Institute, University of Pittsburgh, Pittsburgh, PA, USA.
Zhongqiang ZhangThomas E. Starzl Transplantation Institute, University of Pittsburgh, Pittsburgh, PA, USA.
Bingsi GaoThomas E. Starzl Transplantation Institute, University of Pittsburgh, Pittsburgh, PA, USA.
Hong LiuThomas E. Starzl Transplantation Institute, University of Pittsburgh, Pittsburgh, PA, USA.
Cassandra LongThomas E. Starzl Transplantation Institute, University of Pittsburgh, Pittsburgh, PA, USA.
Yi WangCenter for Kidney Transplantation, Second Affiliated Hospital of the University of South China, Hengyang, Hunan, China.
Amy CassanoDivision of Laboratory Animal Resources, University of Pittsburgh, Pittsburgh, PA, USA.
Edwin KleinDivision of Laboratory Animal Resources, University of Pittsburgh, Pittsburgh, PA, USA.
Carol PhelpsRevivicor, Blacksburg, VA, USA.
David AyaresRevivicor, Blacksburg, VA, USA.
Abhinav HumarThomas E. Starzl Transplantation Institute, University of Pittsburgh, Pittsburgh, PA, USA.
Martin WijkstromThomas E. Starzl Transplantation Institute, University of Pittsburgh, Pittsburgh, PA, USA.
David K C CooperThomas E. Starzl Transplantation Institute, University of Pittsburgh, Pittsburgh, PA, USA.ORCID 0000-0002-8899-9431
University of Pittsburgh · USVirginia Tech · USCentral South University · CNUniversity of South China · CN

Funding

Prolonging life-supported pig kidney and heart graft survival in baboons by suppressing inflammationU19AI090959 · NIAID · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI COOPER, DAVID KC · 2010 to 2024
$26.3M
Nonhuman Primate Reagent ResourceU24AI126683 · NIAID · UNIV OF MASSACHUSETTS MED SCH WORCESTER · PI Diogo Magnani · 2016 to 2026
$20.1M
Therapeutic assessment of synthetic heparin sulfates in transplantation modelsP01HL107152 · NHLBI · VIRGINIA COMMONWEALTH UNIVERSITY · PI DESAI, UMESH RAMANLAL · 2011 to 2017
$15.8M
CORE--BABOON RESEARCH RESOURCE PROGRAMP40RR012317 · NCRR · UNIVERSITY OF OKLAHOMA HLTH SCIENCES CTR · PI WHITE, GARY L · 1998 to 2011
$13.0M
Thromboregulation to Prevent Thrombotic MicroangiopathyU01AI068642 · NIAID · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI COOPER, DAVID KC · 2005 to 2008
$2.7M
NCRR NIH HHS P40 RR012317NHLBI NIH HHS P01 HL107152NIAID NIH HHS HHSN272201300031CNIAID NIH HHS U01 AI068642NIAID NIH HHS U19 AI090959NIAID NIH HHS U24 AI126683
6 · The paper itself

Abstract

backgroundGenetically engineered pigs could provide a source of kidneys for clinical transplantation. The two longest kidney graft survivals reported to date have been 136 and 310 days, but graft survival >30 days has been unusual until recently.

methodsDonor pigs (n=4) were on an α1,3-galactosyltransferase gene-knockout (GTKO)/human complement regulatory protein (CD46) background (GTKO/CD46). In addition, the pigs were transgenic for at least one human coagulation regulatory protein. Two baboons received a kidney from a six-gene pig (GroupA) and two from a three-gene pig (GroupB). Immunosuppressive therapy was identical in all four cases and consisted of anti-thymoglobulin (ATG)+anti-CD20mAb (induction) and anti-CD40mAb+rapamycin+corticosteroids (maintenance). Anti-TNF-α and anti-IL-6R mAbs were administered to reduce the inflammatory response. Baboons were followed by clinical/laboratory monitoring of immune/coagulation/inflammatory/physiological parameters. At biopsy or euthanasia, the grafts were examined by microscopy.

resultsThe two GroupA baboons remained healthy with normal renal function >7 and >8 months, respectively, but then developed infectious complications. However, no features of a consumptive coagulopathy, eg, thrombocytopenia and reduction of fibrinogen, or of a protein-losing nephropathy were observed. There was no evidence of an elicited anti-pig antibody response, and histology of biopsies taken at approximately 4, 6, and 7 months and at necropsy showed no significant abnormalities. In contrast, both GroupB baboons developed features of a consumptive coagulopathy and required euthanasia on day 12.

conclusionsThe combination of (i) a graft from a specific six-gene genetically modified pig, (ii) an effective immunosuppressive regimen, and (iii) anti-inflammatory therapy prevented immune injury, a protein-losing nephropathy, and coagulation dysfunction for >7 months. Although the number of experiments is very limited, our impression is that expression of human endothelial protein C receptor (±CD55) in the graft is important if coagulation dysregulation is to be avoided.

Indexed as

Kidney TransplantationTransplantation, HeterologousAnimalsAnimals, Genetically ModifiedGraft RejectionGraft SurvivalHumansImmunosuppressive AgentsKidneyPapioSwineTransplantsTumor Necrosis Factor-alphaImmunosuppressive AgentsTumor Necrosis Factor-alphaanti-IL-6R antagonistcostimulation blockadegenetically engineeredkidneypigxenotransplantation

Identifiers

PMID28303661
PMCPMC5397334
OpenAlexW2595269307

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.