To investigate the initial and subsequent treatment strategies for NSCLC with concurrent EGFR mutations and PD-L1 expression, and to summarize the diagnostic and therapeutic approaches so as to provide references for treatment decisions for such patients.
The treatment plan of a patient with NSCLC harboring EGFR mutations and PD-L1 expression was analyzed.
The patient was diagnosed with adenocarcinoma of the right lung with EGFR mutations and expression of PD-L1.The initial treatment plan was osimertinib combined with pemetrexed and carboplatin, and the patient ultimately achieved a progression-free survival (PFS) of 39 months from September 2020 to December 2023. On December 27, 2023, re-examination revealed chronic disease progression, and the regimen was adjusted to osimertinib combined with bevacizumab. On March 12, 2024, the patient experienced disease progression, with no significant changes in genetic testing. Chemotherapy was considered for reinitiation, and we selected the treatment regimen of "pemetrexed + carboplatin + sintilimab + anlotinib". After one cycle, a follow-up CT scan demonstrated a partial response (PR), and PR was maintained after the second cycle.
This study reports a case of advanced NSCLC with EGFR mutations and PD-L1 expression. In the treatment of this patient, an individualized diagnosis and treatment plan was formulated through literature review and relevant genetic testing. By combining immunotherapy, chemotherapy and anti-angiogenic drugs, the patient's disease was effectiveI resistance are complex and vary based on individual patient differences and tumor locations. After disease progression, re-genetic testing may clarify the resistance mechanisms and guide clinical treatment to achieve better efficacy and precision treatment.
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |