Publications by authors named "Y Hosomi"

Introduction: Osimertinib, a third-generation epidermal growth factor receptor (EGFR) tyrosine kinase inhibitor, is a first-line therapy for advanced or metastatic non-small cell lung cancer (NSCLC) with EGFR mutations, including both sensitizing and T790M resistance mutations. Its real-world efficacy against uncommon EGFR mutations remains under-researched.

Methods: The REIWA study, a multicentric, prospective, observational study conducted in Japan from September 2018 to August 2020, enrolled patients with advanced or recurrent EGFR mutation-positive NSCLC receiving osimertinib.

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Introduction: Osimertinib-induced interstitial lung disease in untreated EGFR-mutated, advanced non-small cell lung cancer is being reported at a higher rate in Japan than elsewhere. However, data on the interstitial lung disease incidence during first-line osimertinib therapy and the course of lung cancer treatments administered after interstitial lung disease onset in the real-world setting are scarce.

Materials And Methods: The present study reviewed the data from the Reiwa study, a multicentric, observational study examining the efficacy and safety of first-line osimertinib therapy in the clinical setting.

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Background: Osimertinib is effective in patients with epidermal growth factor receptor (EGFR) mutation-positive nonsmall cell lung cancer (NSCLC). However, some patients require osimertinib dose reduction because of adverse events. This study assessed the characteristics of osimertinib dose reduction and compared the efficacies of reduced-dose and regular-dose osimertinib.

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Introduction: First-line osimertinib is widely used to treat patients with epidermal growth factor receptor (EGFR)-mutated non-small cell lung cancers (NSCLC). In clinical practice, rechallenge therapy with another EGFR-tyrosine kinase inhibitor (TKI) is often performed after first-line TKI discontinuation owing to resistance or toxicity; however, the efficacy and toxicity of EGFR-TKI rechallenge after first-line osimertinib have not been adequately investigated. This study aimed to examine the efficacy and safety of EGFR-TKI rechallenge with another TKI.

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