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.
Abstract:
A 44-year-old man whose platelet count had been at the lower limit of the normal range for years visited the urgent care department of our hospital for treatment of a high fever and severe fatigue. The influenza A virus was detected, and the patient therefore received the intravenous antiviral agent, peramivir. One week later, he developed systemic petechial rashes. A peripheral blood examination showed a markedly decreased platelet count (3.0×10(9) cells/L), and the bone marrow findings were compatible with a diagnosis of immune thrombocytopenia (ITP). Furthermore, a drug-induced lymphocyte-stimulating test was positive for peramivir. The thrombocytopenia slowly responded to treatment with oral prednisolone. This case suggests that neuraminidase inhibitors, including peramivir, can elicit or worsen ITP.
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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