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Osimertinib: A Review in T790M Mutation-Positive Advanced Non-Small Cell Lung Cancer

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posted on 09.04.2018 by Yvette N. Lamb, Lesley J. Scott
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Funding: The preparation of this review was not supported by any external funding.

Conflicts of interest: Yvette Lamb and Lesley Scott are salaried employees of Adis/Springer, are responsible for the article content and declare no relevant conflicts of interest.

Additional information about this Adis Drug Review can be found here.

Abstract

Osimertinib (Tagrisso™) is an oral, CNS-active, third-generation epidermal growth factor receptor (EGFR) tyrosine kinase inhibitor (TKI) that targets EGFR TKI-sensitizing mutations and, crucially, the T790M mutation that often underlies acquired resistance to EGFR TKI therapy. Osimertinib has been approved in numerous countries for use in patients with T790M-positive advanced NSCLC. In the pivotal, international AURA3 trial in patients with T790M-positive advanced NSCLC who had disease progression after EGFR TKI therapy, osimertinib treatment significantly prolonged progression-free survival (PFS; primary endpoint) compared with platinum-pemetrexed therapy at the time of the primary analysis. PFS results were consistent across predefined subgroups of patients, including those with CNS metastases at baseline. There was no difference between treatment groups in overall survival at 26% maturity. Objective response rates (ORRs) and patient-reported outcomes for prespecified symptoms were also significantly improved with osimertinib relative to platinum-pemetrexed, with CNS ORRs in patients with CNS metastases more than twofold higher in the osimertinib than in the platinum-pemetrexed group. Osimertinib had a manageable tolerability profile, with relatively few patients permanently discontinuing treatment because of adverse events (AEs). With limited treatment options available in this setting, osimertinib is an important option in adult patients with advanced EGFR T790M-positive NSCLC. Access to the full article can be found here.

© Springer International Publishing AG, part of Springer Nature 2017

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