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Published on: May 15, 2021
Ifosfamide nephrotoxicity in adult patients
Gaël Ensergueix1, Nicolas Pallet1, Dominique Joly2
1Department of Nephrology, Dialysis, Transplantation, Georges Pompidou European Hospital, Paris, France.
Background:
Ifosfamide, a widely prescribed antineoplasic agent, is frequently associated with kidney dysfunction. Its nephrotoxicity is well documented in children, but data are lacking in adult patients.
Methods:
The aim of this retrospective study was to describe the clinical, biological and histological characteristics of ifosfamide nephrotoxicity.
Results:
We report 34 patients (median age: 41 years) admitted in six French nephrology departments for kidney failure and/or tubular dysfunction. Fifteen patients (44.1%) received cisplatin as part of their chemotherapy. In 6 patients (17.7%), ifosfamide nephrotoxicity was revealed by a proximal tubular dysfunction (PTD), in 5 patients (14.4%) by an acute kidney injury (AKI), in 6 patients (17.7%) by a chronic kidney disease (CKD) and in 17 patients (49.7%) by an association of PTD and AKI. Fourteen renal biopsies (41.2%) were performed and revealed acute tubular necrosis (85.7%), vacuolation (78.6%) and nuclear atypias (71.4%) of renal epithelial cells, interstitial inflammation (71.4%) and fibrosis (57.1%). Electron microscopy showed mitochondrial enlargement and dysmorphic changes suggestive of mitochondrial toxicity. Ten patients (29.4%) progressed to Stage 5 CKD, six (17.6%) required haemodialysis and six patients died during a median follow-up period of 31 months. Risk factors for Stage 5 CKD were age and cisplatin co-administration.
Insights
Ifosfamide chemotherapy can cause significant kidney damage in adults, including acute kidney injury and chronic kidney disease. Age and cisplatin co-administration are identified risk factors for severe outcomes.
Area of Science:
- Nephrology
- Oncology
- Toxicology
Background:
- Ifosfamide is a common chemotherapy drug.
- Nephrotoxicity is a known side effect of ifosfamide.
- Limited data exist on ifosfamide nephrotoxicity in adults.
Purpose of the Study:
- To characterize adult ifosfamide nephrotoxicity.
- To describe clinical, biological, and histological features.
- To identify risk factors and outcomes.
Main Methods:
- Retrospective study of 34 adult patients.
- Analysis of kidney function, renal biopsies, and outcomes.
- Median follow-up of 31 months.
Main Results:
- Ifosfamide nephrotoxicity presented as acute kidney injury, chronic kidney disease, or proximal tubular dysfunction.
- Renal biopsies showed acute tubular necrosis, epithelial cell changes, inflammation, and fibrosis.
- Mitochondrial toxicity was observed on electron microscopy.
- Risk factors for Stage 5 CKD included older age and cisplatin co-administration.
Conclusions:
- Ifosfamide causes significant kidney damage in adults.
- Early identification and risk factor management are crucial.
- Further research into protective strategies is warranted.
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