Authors: Murano, Chihiro
Igarashi, Akira
Yamauchi, Keiko
Inoue, Sumito
Watanabe, Masafumi
Title: Osimertinib as treatment for EGFR exon 20 insertion-positive lung adenocarcinoma
Language (ISO): en
Abstract: A 20-year-old woman was diagnosed with stage 4 lung adenocarcinoma with an epidermal growth factor receptor (EGFR) exon 20 insertion gene mutation. Although the patient underwent chemotherapy, her lesions progressed. Liquid biopsy for EGFR T790M mutation showed negative results. After administering osimertinib, reduction of the lesions at the primary site was observed, and the patient’s respiratory condition improved. Previous reports showing successful treatment of EGFR exon 20 insertion-positive lung adenocarcinoma with the standard osimertinib dose of 80 mg are limited. The present case demonstrated that osimertinib could be a possible treatment option for EGFR exon 20 insertion-positive lung adenocarcinoma.
Subject Headings: Lung cancer
EGFR exon 20 insertion gene mutation
Issue Date: 2019-10-07
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