Molecular Markers of Acute Kidney Injury in Elderly Deceased Donors

NCT ID: NCT06171438

Last Updated: 2023-12-14

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

200 participants

Study Classification

OBSERVATIONAL

Study Start Date

2021-06-11

Study Completion Date

2023-10-31

Brief Summary

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Scoring systems that combine donor clinical and morphological parameters to predict outcome of kidney transplantation lack enough specificity to be generally accepted. Compare to classical histology, molecular assessment of renal tissue offers unbiased and technically robust approach. In this prospective 3-months' observational study procurement biopsies in 180 brain death donors will be performed. Using microarray which detect top differently regulated genes, conventional histology, urinary AKI biomarkers, renal function and clinical variables models predicting DGF and early graft scarring (IFTA, poor graft function) in recipients will be constructed. The associations of AKI in donors with distinct fibrosis atrophy and AKI molecular signals will be found. Molecular techniques and final models may help to improve the decision-making process for the acceptance of kidneys from marginal donors but more importantly, it may help clinicians to guide less toxic immunosuppression in identified problematic grafts.

Detailed Description

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The aim is to create a prediction model of early clinical outcome (delayed graft function) based on donor and recipient clinical variables, donor eGFR, urinary AKI biomarkers, histology (glomerulosclerosis, interstitial fibrosis, vascular changes) and top differently regulated genes found in microarray of wedge procurement donor biopsy. Construct a model capable to predict early renal allograft scarring (IFTA\>2), and impaired graft function (eGFR\<45 mL/min), as early as at 3 months. Describe renal molecular changes associated with established AKI in brain-death deceased donor and with aging.

Conditions

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Kidney Transplantation Acute Kidney Injury

Keywords

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kidney transplantation donor kidney microarray

Study Design

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Observational Model Type

COHORT

Study Time Perspective

PROSPECTIVE

Study Groups

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Acute kidney injury (AKI)

Donors with AKI (acute kidney injury) defined based on the results of creatinine increase and diuresis decrease before organ harvest.

Urine Biomarkers

Intervention Type DIAGNOSTIC_TEST

Biomarkers of kidney damage in donors, such as neutrophil gelatinase-associated lipocalin (NGAL), N-acetyl-beta-D-glucosaminidase (NAG), beta2-microglobulin, alpha1-microglobulin, alpha2-macroglobulin and transferrin will be measured by ELISA.

Gene expression profiling of donor kidneys by microarray

Intervention Type DIAGNOSTIC_TEST

Gene expression profiling of donor kidney biopsies using Affymetrix microarray platform (PrimeView Human Gene Expression Array).

Gene expression profiling of recipient kidneys by microarray

Intervention Type DIAGNOSTIC_TEST

Gene expression profiling of donor kidney biopsies using Affymetrix microarray platform (PrimeView Human Gene Expression Array).

no-AKI

Donors without AKI (acute kidney injury) defined based on the results of creatinine increase and diuresis decrease before organ harvest.

Urine Biomarkers

Intervention Type DIAGNOSTIC_TEST

Biomarkers of kidney damage in donors, such as neutrophil gelatinase-associated lipocalin (NGAL), N-acetyl-beta-D-glucosaminidase (NAG), beta2-microglobulin, alpha1-microglobulin, alpha2-macroglobulin and transferrin will be measured by ELISA.

Gene expression profiling of donor kidneys by microarray

Intervention Type DIAGNOSTIC_TEST

Gene expression profiling of donor kidney biopsies using Affymetrix microarray platform (PrimeView Human Gene Expression Array).

Gene expression profiling of recipient kidneys by microarray

Intervention Type DIAGNOSTIC_TEST

Gene expression profiling of donor kidney biopsies using Affymetrix microarray platform (PrimeView Human Gene Expression Array).

delayed graft function (DGF)

Donors and the paired recipients in whom the organ was transplanted in IKEM (Institute for Clinical and Experimental Medicine) who developed delayed graft function (DGF) defined as dialysis in the 1st week after transplantation.

Urine Biomarkers

Intervention Type DIAGNOSTIC_TEST

Biomarkers of kidney damage in donors, such as neutrophil gelatinase-associated lipocalin (NGAL), N-acetyl-beta-D-glucosaminidase (NAG), beta2-microglobulin, alpha1-microglobulin, alpha2-macroglobulin and transferrin will be measured by ELISA.

Gene expression profiling of donor kidneys by microarray

Intervention Type DIAGNOSTIC_TEST

Gene expression profiling of donor kidney biopsies using Affymetrix microarray platform (PrimeView Human Gene Expression Array).

Gene expression profiling of recipient kidneys by microarray

Intervention Type DIAGNOSTIC_TEST

Gene expression profiling of donor kidney biopsies using Affymetrix microarray platform (PrimeView Human Gene Expression Array).

no-DGF

Donors and the paired recipients in whom the organ was transplanted in IKEM (Institute for Clinical and Experimental Medicine) with immediate graft function (no-DGF).

Urine Biomarkers

Intervention Type DIAGNOSTIC_TEST

Biomarkers of kidney damage in donors, such as neutrophil gelatinase-associated lipocalin (NGAL), N-acetyl-beta-D-glucosaminidase (NAG), beta2-microglobulin, alpha1-microglobulin, alpha2-macroglobulin and transferrin will be measured by ELISA.

Gene expression profiling of donor kidneys by microarray

Intervention Type DIAGNOSTIC_TEST

Gene expression profiling of donor kidney biopsies using Affymetrix microarray platform (PrimeView Human Gene Expression Array).

Gene expression profiling of recipient kidneys by microarray

Intervention Type DIAGNOSTIC_TEST

Gene expression profiling of donor kidney biopsies using Affymetrix microarray platform (PrimeView Human Gene Expression Array).

Recipient IFTA

Donors and the paired recipients in whom the organ was transplanted in IKEM with 3-month protocol biopsy histology finding of IFTA≥2.

Gene expression profiling of donor kidneys by microarray

Intervention Type DIAGNOSTIC_TEST

Gene expression profiling of donor kidney biopsies using Affymetrix microarray platform (PrimeView Human Gene Expression Array).

Gene expression profiling of recipient kidneys by microarray

Intervention Type DIAGNOSTIC_TEST

Gene expression profiling of donor kidney biopsies using Affymetrix microarray platform (PrimeView Human Gene Expression Array).

Recipient no-IFTA

Donors and the paired recipients in whom the was transplanted in IKEM with 3-month protocol biopsy histology finding of IFTA\<2.

Gene expression profiling of donor kidneys by microarray

Intervention Type DIAGNOSTIC_TEST

Gene expression profiling of donor kidney biopsies using Affymetrix microarray platform (PrimeView Human Gene Expression Array).

Gene expression profiling of recipient kidneys by microarray

Intervention Type DIAGNOSTIC_TEST

Gene expression profiling of donor kidney biopsies using Affymetrix microarray platform (PrimeView Human Gene Expression Array).

Interventions

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Urine Biomarkers

Biomarkers of kidney damage in donors, such as neutrophil gelatinase-associated lipocalin (NGAL), N-acetyl-beta-D-glucosaminidase (NAG), beta2-microglobulin, alpha1-microglobulin, alpha2-macroglobulin and transferrin will be measured by ELISA.

Intervention Type DIAGNOSTIC_TEST

Gene expression profiling of donor kidneys by microarray

Gene expression profiling of donor kidney biopsies using Affymetrix microarray platform (PrimeView Human Gene Expression Array).

Intervention Type DIAGNOSTIC_TEST

Gene expression profiling of recipient kidneys by microarray

Gene expression profiling of donor kidney biopsies using Affymetrix microarray platform (PrimeView Human Gene Expression Array).

Intervention Type DIAGNOSTIC_TEST

Eligibility Criteria

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Inclusion Criteria

* All DBD (donation after brain death) donors whose kidneys will be procured by transplant team of Institute for Clinical and Experimental Medicine (IKEM) in donor hospital.
* All DBD (donation after brain death) donors whose kidneys will be procured by transplant team of Institute for Clinical and Experimental Medicine (IKEM) at IKEM.

Exclusion Criteria

* Donors with circulatory death
* Donors with machine perfusion
* Donors with multiorgan transplantation.
Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Institute for Clinical and Experimental Medicine

OTHER_GOV

Sponsor Role lead

Responsible Party

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Prof. Ondřej Viklický, M.D., Ph.D.

Head of Department of Nephrology and Transplant Center

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Ondrej Viklicky, Prof.

Role: PRINCIPAL_INVESTIGATOR

Institute for Clinical and Experimental Medicine

Locations

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Institute for Clinical and Experimental Medicine

Prague, , Czechia

Site Status

Countries

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Czechia

Other Identifiers

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G339-2021

Identifier Type: -

Identifier Source: org_study_id