Neurotoxicity of interferon-alpha.

Area of Science:

• Neuroscience
• Pharmacology
• Oncology

Background:

• Interferon (IFN) therapy is associated with a range of neurotoxic side effects.
• These neurological and psychiatric symptoms can significantly impact patient well-being and treatment adherence.

Purpose of the Study:

• To summarize the spectrum of neurotoxicity associated with Interferon therapy.
• To identify patient populations and administration factors that increase the risk of IFN-induced neurotoxicity.

Main Methods:

• Review of clinical presentations of neurotoxicity in patients receiving Interferon.
• Analysis of patient demographics, administration routes, dosages, and underlying conditions.
• Correlation of neurotoxicity with imaging (CT) and electrophysiological (EEG) findings.

Main Results:

• Common neurotoxic effects include somnolence, confusion, fatigue, lethargy, psychiatric symptoms, and neurological deficits.
• Elderly patients, intramuscular/intravenous administration, higher doses, frequent injections, and primary renal cell carcinoma are associated with increased risk.
• CT scans showed non-specific findings like atrophy and periventricular lucencies; EEG revealed generalized slow wave activity reversible upon treatment cessation.

Conclusions:

• IFN-related neurotoxicity encompasses a broad range of central and peripheral nervous system effects.
• Risk factors for neurotoxicity include patient age, administration method, dosage, and specific cancer types.
• Behavioral and mental changes serve as crucial indicators for discontinuing Interferon treatment.