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Polyethylene glycol interferon alpha-2b-induced immune-mediated polyradiculoneuropathy
Yuko Kato-Motozaki1, Kiyonobu Komai, Kazuya Takahashi
1Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Science, Kanazawa. yukokato@med.kanazawa-u.ac.jp
Internal Medicine (Tokyo, Japan)
|April 2, 2009
Summary
Polyethylene glycol-interferon alpha-2b (PEG-IFN alpha-2b) treatment for Hepatitis C Virus (HCV) may cause polyradiculoneuropathy. This condition is linked to anti-ganglioside antibodies, improving after treatment cessation and plasmapheresis.
Area of Science:
- Neurology
- Immunology
- Hepatology
Background:
- Polyethylene glycol-interferon alpha (PEG-IFNalpha) is a standard treatment for Hepatitis C Virus (HCV).
- Peripheral neuropathies are known side effects of interferon therapy, but specific associations with PEG-IFNalpha-2b and anti-ganglioside antibodies are not well-documented.
Observation:
- A 59-year-old male patient developed polyradiculoneuropathy during PEG-IFN alpha-2b therapy for chronic HCV infection.
- The patient exhibited elevated serum levels of anti-asialo-GM1 (GA1) and anti-GM1 antibodies.
Findings:
- PEG-IFN alpha-2b treatment was associated with the onset of polyradiculoneuropathy.
- The patient's condition improved significantly after discontinuing PEG-IFN alpha-2b and undergoing double filtration plasmapheresis.
- A reduction in anti-GA1 and anti-GM1 antibody levels correlated with clinical improvement.
Implications:
- PEG-IFN alpha-2b may induce peripheral neuropathy through an immune mechanism involving anti-GA1 and anti-GM1 antibodies.
- This case highlights a potential adverse effect of PEG-IFN alpha-2b, necessitating awareness among clinicians treating HCV.
- Further research is warranted to elucidate the precise mechanisms and incidence of PEG-IFN alpha-2b-induced neuropathy.
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