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Abstract | Full HTML Article | PDF ecancer 13 970 / https://doi.org/10.3332/ecancer.2019.970

Case Report

Successful osimertinib rechallenge following drug-induced pneumonitis after previous anti-PDL1 exposure

Osimertinib is a first-line treatment option for patients with metastatic non-small cell lung cancer (NSCLC) harbouring EGFR mutations. Pneumonitis is a severe adverse event (AE) related to osimertinib treatment which appears to be more frequent when associated with concurrent or previous anti-PD(L)1 exposure. Data regarding the efficacy and safety of osimertinib rechallenge, especially in the setting of central nervous system (CNS) metastases, are scarce. We herein describe a case of a 53-year-old patient with metastatic EGFR-mutated NSCLC, who developed pneumonitis after osimertinib treatment and was successfully rechallenged with 40 mg daily osimertinib, with CNS response. This dose reduction strategy may be an option for selected patients with brain metastases after tyrosine kinase inhibitors-induced AEs.

Keywords: lung cancer, osimertinib, immunotherapy, pneumonitis, rechallenge, brain metastases

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European Cancer Organisation European Institute of Oncology

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ecancer Global Foundation