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Related Experiment Video

Updated: Apr 7, 2026

Using a Chemical Biopsy for Graft Quality Assessment

Using a Chemical Biopsy for Graft Quality Assessment

Published on: June 17, 2020

Molecular diagnostics identifies risks for graft dysfunction despite borderline histologic changes.

Petra Hrubá¹, Irena Brabcová¹, Faikah Gueler²

¹Transplant Laboratory, Institute for Clinical and Experimental Medicine, Prague, Czech Republic.

Kidney International

|July 16, 2015

Summary

This summary is machine-generated.

Borderline kidney transplant biopsy findings differ based on clinical presentation. Early clinical signs show more immune gene activity, while subclinical signs link to fibrinogen, impacting graft outcomes.

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Area of Science:

Nephrology
Immunology
Genomics

Background:

Borderline changes in kidney allograft biopsies lack clear prognostic significance.
Understanding gene expression differences may clarify the clinical relevance of these changes.

Purpose of the Study:

To investigate intrarenal gene expression differences between early clinical and 3-month protocol kidney allograft biopsies with borderline changes.
To identify molecular markers associated with graft deterioration and dysfunction.

Main Methods:

Microarray analysis for initial gene expression profiling.
RT-qPCR validation in an independent cohort.
Regression modeling to identify risk factors for graft deterioration.

Main Results:

Early clinical borderline biopsies showed higher expression of immunity- and inflammation-related genes compared to 3-month protocol biopsies.
Graft deterioration in early clinical cases correlated with immune activation, donor age, and CLEC5A expression.
Graft dysfunction in 3-month protocol biopsies was linked to fibrinogen complex transcripts.

Conclusions:

Gene expression varies significantly between clinically apparent and subclinical borderline kidney allograft changes.
Fibrinogen expression is a potential biomarker for graft dysfunction in subclinical borderline changes.
Frequent monitoring is advised for patients with borderline changes, particularly those with grafts from older donors.