Chinese Journal of Pharmacovigilance ›› 2025, Vol. 22 ›› Issue (11): 1300-1303.
DOI: 10.19803/j.1672-8629.20240786

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One Case of Heart Failure Caused by Osimertinib Mesylate Tablets

KONG Yingli1, XIN Xinyuan1, SHI Huihui1, ZHAO Zinan2, ZHANG Yatong2*   

  1. 1Department of Pharmacy, Xingtai Central Hospital, Xingtai Hebei 054000, China;
    2Department of Pharmacy, Beijing Hospital, National Center of Gerontology, Beijing 100730, China
  • Received:2024-10-11 Online:2025-11-15 Published:2025-11-14

Abstract: Objective To analyze the clinical characteristics and potential mechanisms of heart failure caused by osimertinib mesylate tablets (osimertinib) in order to provide a reference for safe use of osimertinib and for clinical management. Methods The clinical data of a 59-year-old patient with lung adenocarcinoma who developed heart failure after taking osimertinib was analyzed. Combined with related literature, the Naranjo's score was used to find out about the drugs that might have caused heart failure, causes of occurrence, and measures for prevention and treatment. Results It was very likely that osimertinib caused heart failure in this patient. After discontinuation of osimertinib and management of heart failure, the patient's cardiac function significantly improved. Conclusion Despite the scarcity of cases of heart failure caused by osimertinib, clinicians should be aware that osimertinib can cause heart failure a few days to several months after administration.

Key words: Osimertinib Mesylate Tablets, Heart Failure, Lung Adenocarcinoma, Adverse Drug Reactions

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