Severe immune thrombocytopenia possibly elicited by the anti-influenza viral agent peramivir

Kayo Harada-Shirado1, Kazuhiko Ikeda, Miki Furukawa

  • 1Department of Cardiology and Hematology, Fukushima Medical University, Japan.

Insights

This case study highlights a potential link between the antiviral drug peramivir and immune thrombocytopenia (ITP). The findings suggest neuraminidase inhibitors may trigger or exacerbate ITP in susceptible individuals.

Area of Science:

  • Pharmacology
  • Hematology
  • Infectious Diseases

Background:

  • A 44-year-old male presented with fever and fatigue, diagnosed with Influenza A.
  • The patient received intravenous peramivir, a neuraminidase inhibitor, for influenza treatment.

Observation:

  • One week post-treatment, the patient developed petechial rashes and severe thrombocytopenia (3.0×10^9/L).
  • Bone marrow examination confirmed immune thrombocytopenia (ITP).

Findings:

  • A drug-induced lymphocyte stimulation test was positive for peramivir.
  • Thrombocytopenia showed a slow response to oral prednisolone treatment.

Implications:

  • This case suggests peramivir, and potentially other neuraminidase inhibitors, may elicit or worsen immune thrombocytopenia.
  • Further research is warranted to explore the association between neuraminidase inhibitors and ITP development or exacerbation.

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