Acquired SAMD5-RET fusion-mediated resistance to gefitinib in metastatic non-small cell lung cancer harboring EGFR-activating mutation: a case report
Patients with disease progression on first-generation tyrosine kinase inhibitors (TKIs) usually have a poor prognosis. The mechanisms of acquired resistance to epidermal growth factor receptor (EGFR)-TKIs have been widely reported; however, reports of acquired