Chinese Journal of Pharmacovigilance ›› 2025, Vol. 22 ›› Issue (4): 447-451.
DOI: 10.19803/j.1672-8629.20240587

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Adverse Event Signals for Osimertinib-Induced Muscle Toxicity Based on FAERS Database

CHEN Lingbin, HUANG Zhixiong, ZHENG Cailin, WU Jinneng, CHEN Zhou*   

  1. School of Pharmacy, Fujian Medical University, Fuzhou Fujian 350122, China
  • Received:2024-08-15 Published:2025-04-17

Abstract: Objective To analyze adverse event (AE) signals related to osimertinib-induced muscle toxicity so as to provide a reference for safe clinical use of this drug. Methods All the data on AE related to osimertinib and collected between the 4th quarter of 2015 and the 4th quarter of 2023 was retrieved from the FDA Adverse Event Reporting System (FAERS) database. Data mining of positive signals of AE related to osimertinib-induced muscle toxicity was performed using the reporting odds ratio (ROR) method and the proportional reporting ratio (PRR) method. Results A total of 616 AE related to muscle toxicity were reported, with osimertinib as the primary suspect (PS). The male-to-female ratio was 2.87. Muscle spasms and myositis met the criteria for positive signals based on both ROR and PRR. Conclusion In clinical use of osimertinib, adverse reactions mentioned in drug instructions, the risk of muscle toxicity and gender differences deserve attention. It is recommended that key indicators be monitored within 30 days of medications with osimertinib to ensure the safety of patients.

Key words: FDA Adverse Event Reporting System(FAERS), Osimertinib, Muscle Toxicity, Myositis, Myalgia, Creatine Kinase, Adverse Drug Events

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