{Reference Type}: Case Reports {Title}: Case report: EGFR fusion mutation combined with EGFR amplification responds to EGFR-TKI therapy. {Author}: Wang Z;Huang C;Fan W;Sun S;Li K;Liu X;Pu J;Zhang G;Li X; {Journal}: Front Oncol {Volume}: 14 {Issue}: 0 {Year}: 2024 {Factor}: 5.738 {DOI}: 10.3389/fonc.2024.1347282 {Abstract}: Given their good antitumor effects, epidermal growth factor receptor (EGFR) tyrosine kinase inhibitors (TKIs) are standard first-line therapy for EGFR-sensitive mutations, including exon 19 deletions and exon 21 L858R mutations. EGFR fusion mutations and EGFR amplification are very rare in non-small cell lung cancer (NSCLC). We describe 2 patients with NSCLC harboring EGFR fusion mutations (EGFR-MACF1 and EGFR-GNAT3) combined with EGFR amplification. Both patients received EGFR-TKI treatment, and 1 of them showed an antitumor response.