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Osimertinib-induced Cardiac Dysfunction in EGFR-Mutated Lung Cancer: A Case Series of Five Patients

Maria Lucia Reale, Matteo Bianco, Fabrizio Tabbò, Annapaola Mariniello, Paola Destefanis, Alessia Luciano, Paolo Bironzo, Simona Carnio, Enrica Cappelletto, Roberto Pozzi, Silvia Novello


Introduction: The gold standard treatment for Epidermal Growth Factor Receptor (EGFR) positive Non-Small Cell Lung Cancer (NSCLC)patients is represented byosimertinib, an irreversible third-generation EGFR inhibitor that has been providingimportant outcomes’ improvementscompared to chemotherapy and other target therapies; either upfront or as second line therapy, in case of  EGFR T790M detection after previous tyrosine kinase inhibitors (TKI).Osimertinib is generally well tolerated. Most common side effects are diarrhea, rash, paronychia, dry skin and alsochanges in QT interval.

Presentation of case series: Here we report five cases of left ventricular dysfunction duringosimertinib treatment, observed between January 2017 and August 2018. The five patients, with a general low cardiovascular risk profile, required a dose modification/discontinuation of the TKI therapy and a specific cardio-protective treatment, normally with a recovery of the systolic function.

Conclusion: Both American and European compound labels highlight warnings of cardiomyopathy and changes in cardiac contractility during osimertinib treatment, recommending cardiac monitoring and dose adjustment in patients with cardiac risk factors. In spite of this, a standardized echocardiographic follow-up in the entire population is still not available and recommendations about the use of tissue Doppler echocardiography with more sophisticated indices are missing. With the expanding use of osimertinib we need better strategies to prevent or mitigate cardiovascular damage from cancer therapy in a larger multidisciplinary approach in which every issue is carefully evaluated.


EGFR, lung cancer, osimertinib, cardiac toxicity, echocardiography

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