RAF1 extrachromosomal DNA amplification confers acquired erlotinib resistance in a non-small cell lung cancer cell model2026-08-050 OA AI SSujin Kim BBoyoon Kim AAhjin Lim HHoon Kim *JJeonghee Cho * DOI:10.1038/s41392-026-02845-8OriginalOriginal request for helpShareSaveAbstract En