Objective: To observe the clinical efficacy and safety of epidermal growth factor receptor tyrosine kinase inhibitors (EGFR-TKIs) combined with chemotherapy as first-line treatment for EGFR mutant advanced non-small cell lung cancer (NSCLC). Methods: It was a retrospective, single-arm real-world study and a total of 39 patients with stage ⅢB to Ⅳ EGFR mutant NSCLC diagnosed in Cancer Hospital of Chinese Academy of Medical Sciences from July 2018 to December 2020 were collected. There were 16 males and 23 females, the age ranged from 25 to 73 years, with a median age of 53 years. All patients received EGFR-TKIs synchronously combined with pemetrexed and platinum-containing chemotherapy for 4-6 cycles as first-line treatment, followed by EGFR-TKI monotherapy with or without pemetrexed maintenance therapy. The objective response rate (ORR), disease control rate (DCR), progression-free survival (PFS) and adverse reactions were evaluated. Median follow-up time was 18.6 months (95%CI: 16.2-21.0 months). The Kaplan-Meier method was used for survival analysis. Results: The ORR was 61.5% (24/39), the DCR was 94.9% (37/39) and the median PFS was 16.4 months (95%CI: 12.1-20.7 months). The main adverse reactions were liver function injury (59.0%, 23/39), myelosuppression (43.6%, 17/39), skin reaction (25.6%, 10/39), gastrointestinal reaction (17.9%, 7/39), fatigue (12.8%, 5/39) and kidney injury (5.1%, 2/39). Most of the patients had grade 1-2 adverse reactions, and the rate of grade 3 adverse events were 12.8%(5/39), which were effectively alleviated after symptomatic support treatment, no grade 4 serious adverse events occurred. Conclusion: EGFR-TKIs synchronously combined with chemotherapy followed by EGFR-TKI monotherapy with or without pemetrexed maintenance therapy has a certain therapeutic effect and fairly good safety, which can prolong PFS in patients with EGFR mutated advanced NSCLC.
目的： 观察表皮生长因子受体酪氨酸激酶抑制剂（EGFR-TKIs）联合化疗一线治疗EGFR突变晚期非小细胞肺癌（NSCLC）的临床疗效和安全性。 方法： 采用回顾性单臂真实世界临床研究，收集2018年7月至2020年12月在中国医学科学院肿瘤医院治疗的39例ⅢB~Ⅳ期EGFR突变NSCLC患者资料，其中男16例，女23例；年龄25~73岁，中位年龄53岁。一线治疗均为EGFR-TKIs同步联合培美曲塞含铂方案连续治疗4~6个周期后，序贯EGFR-TKIs单药联合或不联合培美曲塞维持治疗，治疗结束后评价客观缓解率（ORR）、疾病控制率（DCR）和治疗不良反应。中位随访18.6个月（95%CI：16.2~21.0个月），采用Kaplan-Meier法分析无进展生存时间（PFS）。 结果： 39例EGFR突变晚期NSCLC患者的ORR为61.5%（24/39），DCR为94.9%（37/39），中位PFS为16.4个月（95%CI：12.1~20.7个月）。39例患者的主要不良反应为肝功能损伤（59.0%，23/39）、骨髓抑制（43.6%，17/39）、皮肤反应（25.6%，10/39）、胃肠道反应（17.9%，7/39）、疲乏（12.8%，5/39）、肾功能损伤（5.1%，2/39），大部分不良反应为1~2级，3级不良反应发生率仅占12.8%（5/39），无4级不良事件发生；不良反应经对症治疗后均能有效缓解。 结论： EGFR-TKIs联合化疗一线治疗EGFR突变晚期NSCLC疗效确切，安全性较好，能够延长患者的PFS。.