Herein, we present an EGFR-mutated NSCLC patient with brain metastases currently demonstrating exceptional durability in response to 165mg high-dose aumolertinib after local progression was observed with a standard dose….A 46-year-old female was diagnosed with stage IVB (cT4N2M1c) lung adenocarcinoma with multiple pulmonary nodules, right malignant pleural effusion and brain metastases. While awaiting next-generation sequencing (NGS) results, the patient received intra-pleural injection of Endostar (45mg on Day 1, 4, and 7) and cisplatin (30mg on Day 2 and 5), as well as one cycle of pemetrexed chemotherapy. Upon confirmation of EGFR exon 19 deletion mutation, the patient was started with standard dose aumolertinib (110mg daily). The patient demonstrated excellent overall response including partial response (PR) in lung lesions and complete response (CR) in multiple brain metastases after 2 months treatment of aumolertinib. Local progression of the primary lung lesion occurred 17 months later with 110mg aumolertinib administration, but brain lesions continued CR on MRI brain....The patient is demonstrating a durable response of over 33 months to aumolertinib and tolerating the high-dose treatment very well with no significant adverse events.