...the initial clinical diagnosis was left lung adenocarcinoma (stage IV), mediastinal lymph node metastasis, brain metastasis, bone metastasis, bilateral pulmonary metastasis, and EGFR L858R mutation (tissue NGS 14 genes)….the treatment was changed to aumolertinib...The efficacy evaluation was PR, with no obvious adverse reactions and the PFS was more than 36 months, and she is still under a close follow-up.