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Unilateral Ureteral Obstruction Model for Investigating Kidney Interstitial Fibrosis
Published on: April 25, 2025
Treatment of Renal Fibrosis-Turning Challenges into Opportunities
Barbara M Klinkhammer1, Roel Goldschmeding1, Jürgen Floege1
1Institute of Pathology, RWTH University of Aachen, Aachen, Germany; Department of Pathology, University Medical Centre Utrecht, Utrecht, The Netherlands; and Division of Nephrology, RWTH University of Aachen, Aachen, Germany.
Abstract:
Current treatment modalities are not effective in halting the progression of most CKD. Renal fibrosis is a pathological process common to all CKD and thereby represents an excellent treatment target. A large number of molecular pathways involved in renal fibrosis were identified in preclinical studies, some of them being similar among different organs and some with available drugs in various phases of clinical testing. Yet only few clinical trials with antifibrotic drugs are being conducted in CKD patients. Here we review those clinical trials, focusing on agents with direct antifibrotic effects, with particular focus on pirfenidone and neutralizing antibodies directed against profibrotic growth factors and cell connection proteins. We discuss the potential reasons for the poor translation in treatment of renal fibrosis and propose possible approaches and future developments to improve it, eg, patient selection and companion diagnostics, specific and sensitive biomarkers as novel end points for clinical trials, and drug-targeting and theranostics.
Insights
Current treatments fail to halt chronic kidney disease (CKD) progression. This review examines antifibrotic drugs, like pirfenidone, in CKD clinical trials, highlighting challenges and future directions for treating renal fibrosis.
Area of Science:
- Nephrology
- Pharmacology
- Translational Medicine
Background:
- Chronic kidney disease (CKD) is a progressive condition with limited effective treatments.
- Renal fibrosis is a common pathological hallmark of CKD, making it a key therapeutic target.
- Preclinical studies have identified numerous antifibrotic molecular pathways, some with drugs in clinical development.
Purpose of the Study:
- To review current clinical trials of antifibrotic agents in CKD patients.
- To focus on drugs with direct antifibrotic effects, including pirfenidone and neutralizing antibodies.
- To explore reasons for the limited translation of antifibrotic therapies into clinical practice for renal fibrosis.
Main Methods:
- Literature review of clinical trials involving antifibrotic drugs for CKD.
- Focus on agents targeting profibrotic growth factors and cell connection proteins.
- Analysis of challenges in clinical translation and potential future strategies.
Main Results:
- Few clinical trials are currently investigating antifibrotic drugs in CKD patients.
- Pirfenidone and neutralizing antibodies are among the agents being studied.
- Significant gaps exist between preclinical findings and clinical application for renal fibrosis treatment.
Conclusions:
- There is a critical need to improve the translation of antifibrotic therapies for CKD.
- Future strategies should include optimized patient selection, companion diagnostics, sensitive biomarkers, and advanced drug-targeting approaches.
- Enhanced clinical trial designs are essential for effective treatment of renal fibrosis in CKD.
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