Reversible proximal renal tubular dysfunction after one-time Ifosfamide exposure

Area of Science:

• Oncology
• Nephrology
• Pharmacology

Background:

• Ifosfamide is a widely used anti-neoplastic agent for various cancers.
• Potential toxicities include glomerulopathy, tubulopathy, and hemorrhagic cystitis.
• The role of pre-existing conditions like diabetic nephropathy in ifosfamide-induced toxicity is not fully understood.

Purpose of the Study:

• To report a case of proximal renal tubular dysfunction and hemorrhagic cystitis in a patient treated with ifosfamide.
• To investigate the potential contributing factors and outcomes of ifosfamide-induced nephrotoxicity.
• To highlight the need for further research into ifosfamide toxicity in patients with diabetes.

Main Methods:

• Case report of a 67-year-old male treated with ifosfamide for epitheloid sarcoma.
• Monitoring of renal function, serum/urine electrolytes, and adverse events.
• Assessment of adverse drug reaction probability using the Naranjo scale.

Main Results:

• The patient developed symptoms consistent with Fanconi's syndrome (proximal renal tubular dysfunction) and hemorrhagic cystitis after ifosfamide treatment, despite mesna prophylaxis.
• Renal function and electrolyte balance were restored within 14 days with supportive care alone.
• The Naranjo scale indicated a high probability (score of 8) that the adverse events were related to ifosfamide treatment.

Conclusions:

• Ifosfamide can induce significant, albeit potentially reversible, renal toxicity and hemorrhagic cystitis.
• Supportive care may be sufficient for managing acute ifosfamide-induced renal dysfunction.
• The potential influence of diabetic nephropathy on adult ifosfamide nephrotoxicity warrants further investigation.