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Deceased Donor Biomarkers and Recipient Outcomes (DDS)

8. april 2020 opdateret af: Yale University

Deceased Donor Urinary Biomarkers to Predict Kidney Transplant Outcomes

Compared to chronic dialysis, kidney transplantation provides recipients with longer survival and better quality of life at a lower cost. In order to meet increasing demands for kidney allografts, kidneys from older and sicker donors are being procured. This has led to greater discard rates of donated kidneys as well as more complications for recipients, including shorter allograft survival. Available clinical models to predict kidney allograft quality have poor prognostic ability and do not asses the degree of kidney allograft injury. However, allograft injury near the time of procurement can lead to major consequences for the transplant recipient: greater risks of delayed graft function, poor allograft function and premature loss of the transplant. Our proposal is based on the hypotheses that novel biomarkers measured in donor urine and transport media at the time of procurement can assess acute and chronic kidney injury and that distinct biomarker patterns will predict allograft survival. In collaboration with five organ procurement organizations, we will collect urine samples from consecutive deceased donors and samples of transport solution for every pumped kidney. We will measure markers of injury, repair, inflammation and fibrosis. We will determine mortality and allograft survival in all patients by linkage to the United Network for Organ Sharing (UNOS) database (Overall Cohort). Additionally, we will perform a detailed chart review of a subset of recipients (detailed cohort) and will also examine associations between biomarkers and longitudinal graft function over five years after transplant. Early, non-invasive and rapid assessment of donor kidney injury could drive better allocation decisions and potentially reduce the rates of post-transplant complications. Further, these new tools could provide a platform for clinical trials of therapies for allografts and kidney transplant recipients aimed at ameliorating allograft injury.

Studieoversigt

Status

Afsluttet

Betingelser

Detaljeret beskrivelse

Our study has several key processes that we have developed and tested to address our scientific aims:

  1. Enrollment

    We will collect urine samples from approximately 1600 deceased donors and approximately 600 perfusate samples from machine-pumped kidneys from participating organ procurement organizations (OPOs). We estimate that our final donor group will be comprised of 55% standard criteria donors, 25% expanded-criteria donors and 10% donors after cardiac death. Approximately, 20% of the kidneys will be discarded.

  2. Donor Data

    Donor variables come from two sources: the United Network for Organ Sharing (UNOS) database and detailed data abstraction from each OPO. The UNOS database provides data on all donors with demographics and other important clinical characteristics. The additional data collected by the OPO staff captures granular information on events surrounding donor death, which are not included in the UNOS database. These data will be available on all enrolled donors and include variables such as serial serum creatinine, nadir blood pressures, medication and vasopressor use, and machine pump parameters.

  3. Overall Recipient Cohort

    Over 2000 recipients will have received kidneys from the deceased donors in our study. The Overall Cohort will comprise all of these recipients General demographic and clinical characteristics about recipients in the Overall Cohort will come from the UNOS database. For the Overall Recipient Cohort, we will ascertain delayed graft function (DGF) through center reports to UNOS. We will ascertain allograft failure through center reports to UNOS and new episodes of wait-listing and re-transplant collected by UNOS, Recipient mortality will be ascertained through the center reports to UNOS/SRTR and through the Social Security Death Master File.

  4. Detailed Recipient Cohort

    A subset of over 1100 recipients of the Overall Cohort who had transplantation at any of our collaborating transplant centers will comprise this cohort. For the Detailed Subcohort, on-site coordinators will perform manual chart review and abstract more extensive data about each recipient including dialysis indications post-transplant, comorbidities, and specific doses of immunosuppression. For the Detailed Subcohort, we will also collect data on clinical events for up to five years after transplantation, including acute rejection and estimated glomerular filtration rate at the time of transplantation and at months 1, 3, 6, 12, 18, 24, 30, 36, 48 and 60 months after transplant.

  5. Novel biomarkers will be measured in urine and perfusate

Undersøgelsestype

Observationel

Tilmelding (Faktiske)

1679

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiesteder

  • Forenede Stater
    • Connecticut
      • New Haven, Connecticut, Forenede Stater, 06510
        • Yale New Haven Hospital
    • Maryland
      • Baltimore, Maryland, Forenede Stater, 21201
        • University of Maryland Medical Center
    • Massachusetts
      • Waltham, Massachusetts, Forenede Stater, 02451
        • New England Organ Bank
    • Michigan
      • Ann Arbor, Michigan, Forenede Stater, 48108
        • Gift of Life Michigan
      • Detroit, Michigan, Forenede Stater, 48201
        • Harper University Hospital
    • New Jersey
      • Livingston, New Jersey, Forenede Stater, 07039
        • St. Barnabas Medical Center
      • New Providence, New Jersey, Forenede Stater, 07974
        • New Jersey Sharing Network
      • Newark, New Jersey, Forenede Stater, 07112
        • Newark Beth Israel Medical Center
    • New York
      • New York, New York, Forenede Stater, 10029
        • Mount Sinai School of Medicine
      • New York, New York, Forenede Stater, 10467
        • Montefiore Medical Center
      • New York, New York, Forenede Stater, 10001
        • New York Organ Donor Network
      • New York, New York, Forenede Stater, 10032
        • NewYork-Presbyterian/ Columbia University Irving Medical Center
      • New York, New York, Forenede Stater, 10065
        • The New York Hospital (Cornell)
    • Pennsylvania
      • Philadelphia, Pennsylvania, Forenede Stater, 19104
        • University of Pennsylvania
      • Philadelphia, Pennsylvania, Forenede Stater, 19107
        • Thomas Jefferson University Hospital
      • Philadelphia, Pennsylvania, Forenede Stater, 19102
        • Hahnemann University Hospital
      • Philadelphia, Pennsylvania, Forenede Stater, 19104
        • Gift of Life Donor Program- Philadelphia

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

  • Barn
  • Voksen
  • Ældre voksen

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Prøveudtagningsmetode

Sandsynlighedsprøve

Studiebefolkning

The population from which our Deceased-Donor Cohort will be selected is all potential deceased organ donors located in the regions serviced by our participating organ procurement organizations (OPOs).

The recipient cohorts will be defined by the deceased donors enrolled in the study, and thus, the study population for this group is all recipients of kidneys from deceased organ donors procured in the regions serviced by our participating OPOs.

Beskrivelse

Inclusion Criteria:

  • Donor Cohort: Appropriate informed consent for research according to OPO policies
  • Recipient Cohorts: Any recipient of at least one kidney from a deceased donor enrolled by our participating OPOs

Exclusion Criteria:

• Donor Cohort: Lack of adequate biospecimen quantity or quality as per protocol

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Observationsmodeller: Kohorte
  • Tidsperspektiver: Fremadrettet

Kohorter og interventioner

Gruppe / kohorte
Deceased-Donor Cohort
We will collect urine samples from approximately 1600 deceased donors and approximately 600 perfusate samples from machine-pumped kidneys from participating organ procurement organizations (OPOs).
Recipient Cohort (Overall and Detailed)
No samples will be collected from the recipients. Only clinical data and outcomes will be collected from the recipients.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Delayed Graft Function
Tidsramme: Assessed within first week of receiving renal transplant
Receipt of dialysis within the first seven days post renal transplant
Assessed within first week of receiving renal transplant
Death-Censored Graft Failure (Overall Cohort)
Tidsramme: median of 4 years of follow-up
Requirement of chronic dialysis or retransplantation after renal transplant.
median of 4 years of follow-up

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Graft Function (detailed cohort)
Tidsramme: median of 4 years of follow-up
Serum creatinine and estimated glomerular filtration rate at specified time points over a five year period.
median of 4 years of follow-up

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Yale University

Samarbejdspartnere

Johns Hopkins University
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)

Efterforskere

  • Ledende efterforsker: Chirag R Parikh, MD PhD, Yale University

Publikationer og nyttige links

Den person, der er ansvarlig for at indtaste oplysninger om undersøgelsen, leverer frivilligt disse publikationer. Disse kan handle om alt relateret til undersøgelsen.

Generelle publikationer

Hjælpsomme links

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart

1. maj 2010

Primær færdiggørelse (Faktiske)

1. december 2019

Studieafslutning (Faktiske)

1. marts 2020

Datoer for studieregistrering

Først indsendt

30. april 2013

Først indsendt, der opfyldte QC-kriterier

2. maj 2013

Først opslået (Skøn)

7. maj 2013

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

9. april 2020

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

8. april 2020

Sidst verificeret

1. april 2020

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • 1206010465
  • R01DK093770-01A1 (U.S. NIH-bevilling/kontrakt)

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