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With the increasing use of epidermal growth factor receptor tyrosine kinase inhibitor (EGFR TKI) in patients with advanced non-small cell lung cancer (NSCLC), its acquired resistance has become a major clinical problem. Recent studies revealed that miR-21 was involved into the resistance of cytotoxic agents. The aim of this study was to investigate its role in the acquired resistance of NSCLC to EGFR-TKI...
We report a man with advanced adenocarcinoma who harboring exon 19 (E746-A750del) epidermal growth factor receptor (EGFR) deletion and echinoderm microtubule-associated protein like 4-anaplastic lymphoma kinase (EML4-ALK) gene translocation in the re-biospy specimen. The patient was treated with erlotinib with a stable disease but progressed slowly, while crizotinib showed a complete response.
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