目的：观察吉非替尼用于表皮生长因子受体（epidermal growth factor receptor,EGFR）突变型晚期非小细胞肺癌（non-small cell lung cancer,NSCLC）一线或二线治疗对患者近期疗效及生存期的影响,分析吉非替尼的最佳治疗时机。方法：回顾性分析61例EGFR突变型（外显子19或21突变）晚期NSCLC患者的病历和随访资料,其中31例患者接受吉非替尼一线治疗,30例患者接受吉非替尼二线治疗;应用Kaplan-meier法进行生存分析。结果：两组患者的性别（P＝0．717）、年龄（P＝0．849）、吸烟史（P＝0．173）、病理类型（P＝0．573）和临床分期（P＝0．668）的差异无统计学意义。吉非替尼一线较二线治疗EGFR突变型NSCLC的近期有效率及疾病控制率明显提高（RR：64．5％ vs 23．3％,P＝0．001;DCR：87．1％ vs 60．0％,P＝0．016）。吉非替尼一线和二线治疗的中位无进展生存期分别为7．6和6．4个月（P＝0．392）,中位总生存期分别为16．0和17．6个月（P＝0．606）。另外,在最终获得疾病控制的患者中,吉非替尼一线治疗组为27例,二线治疗组为18例,2组中位无进展生存期及总生存期也无明显差异（PFS：8．0 vs 9．7个月,P＝0．777;OS：17．0 vs 20．0个月,P＝0．196）。结论：吉非替尼用于EGFR突变型晚期NSCLC患者,一线较二线治疗的近期疗效明显提高,但生存获益无明显差异。 相似文献
目的 比较埃克替尼和吉非替尼治疗表皮生长因子受体（epidermal growth factor receptor,EGFR）突变型晚期肺腺癌患者的临床疗效、不良反应及用药后机体免疫功能状态。方法 选取2012年1月至2019年12月于广西医科大学附属肿瘤医院经病理活检证实为肺腺癌的176例EGFR突变阳性患者作为研究对象,按靶向治疗方案分为埃克替尼组和吉非替尼组,并依据RECIST 1.1标准对患者进行疗效评估;比较两组患者不良反应发生情况、细胞免疫和体液免疫指标的差异。结果 埃克替尼组和吉非替尼组客观缓解率（60.0% vs 63.2%）,疾病控制率（94.0% vs 92.1%）,中位无进展生存期（9.5个月 vs 8.9个月）,中位总生存期（21.7个月 vs 18.5个月）,药物总体不良反应发生率（31.0% vs 34.2%）比较,差异均无统计学意义（均P>0.05）;两组细胞免疫指标（CD3+T细胞、CD4+T细胞、CD8+T细胞、CD4+/CD8+、自然杀伤细胞）和体液免疫指标IgM比较,差异均无统计学意义（均P>0.05）;但吉非替尼组体液免疫指标IgG和IgA水平高于埃克替尼组（均P<0.05）。结论 埃克替尼和吉非替尼在治疗EGFR突变型晚期肺腺癌患者的临床疗效、不良反应相似。用药后两组细胞免疫功能亦相似,但吉非替尼组治疗后体液免疫IgG和IgA水平略优于埃克替尼组。 相似文献
Mutation of epidermal growth factor receptor (EGFR) gene has been reported to be present in lung adenocarcinoma (LAC). In this study, we extensively investigated the impact of patients’ biological characteristics on EGFR mutation and the impact of EGFR mutation subtypes on targeted therapy of advanced LAC. We examined EGFR exons18to21status in169 LAC patients by direct sequencing to study the impact of patients’ biological characteristics on the EGFR mutational spectrum. And then, 59 patients with advanced LAC harboring EGFR exon 19 deletions(del 19) or exon 21 point mutation(L858R) mutations received first-line treatment of gefitinib or erlotinib, the efficacy of treatment, and the progression-free survival (PFS) of these patients were recorded. The frequency of the EGFR mutation and its subtypes and the variables associated with the EGFR mutation after removing the confound factors were investigated by the logistic analysis using all samples (n?=?169). The EGFR mutation was significantly associated with well-differentiated tumor and excessive household cooking fumes(P?<?0.05). The deletions in exon 19 were more frequently associated with well-differentiated tumor (P?<?0.05). The overall frequency of the EGFR mutation was 49 %. Then the impact of EGFR mutation subtypes on targeted therapy were investigated by the retrospective analysis on 59 advanced LAC patients with del 19 or L858R mutations and treated first-line with erlotinib or gefitinib. The deletions in exon 19 got longer PFS (P?<?0.05). But there were no differences in PFS between erlotinib therapy and gefitinib therapy. EGFR mutations were more frequently in high tumor differentiation and excessive household cooking fumes LAC. The del 19 mutation rate is relatively high with a high differentiation degree in advanced lung adenocarcinoma. The deletions in exon 19 may benefit more from first-line targeted therapy of advanced LAC compared with exon 21 point mutation L858R. There was no significant difference between the efficacy of gefitinib and erlotinib treatments associated with EGFR mutation and its subtypes. 相似文献
Epidermal growth factor receptor ( EGFR ) mutations have been reported as a predictive factor for favorable prognosis of gefitinib-treated patients with lung adenocarcinoma. However, its confounding with sex and smoking makes it unclear whether the EGFR mutation is independently associated with prolonged patient survival. In this study, we analyzed a large-scale database to discriminate the survival impact of EGFR mutations against those of sex and smoking after gefitinib therapy. EGFR mutations in exon19 and exon21 named drug-sensitive EGFR mutations were examined to investigate the impact of EGFR mutation, sex, and smoking status on survival of 362 gefitinib-treated patients with lung adenocarcinoma. Drug-sensitive EGFR mutations were detected in 169 patients (46.7%). The multivariate analysis including EGFR , sex, and smoking status showed that drug-sensitive EGFR mutations were significantly related to longer overall survival (OS) ( P < 0.001) and progression-free survival (PFS) ( P < 0.001). In addition, we investigated the impact of sex and smoking status according to EGFR mutation status, and the impact of EGFR mutation status according to sex and smoking status on survival. Sex and smoking status were not significantly associated with longer OS and PFS according to EGFR mutation status. Drug-sensitive EGFR mutations were significantly associated with longer OS and PFS according to sex or smoking status. Our results indicated that drug-sensitive EGFR mutations were the only independent factor for longer survival of patients treated with gefitinib, suggesting that patient selection based on EGFR mutation status for gefitinib therapy will lead to a better outcome for patients with lung adenocarcinoma. ( Cancer Sci 2008; 99: 303–308) 相似文献
This study was designed to prospectively evaluate the efficacy and safety of first-line gefitinib treatment in patients with advanced pulmonary adenocarcinoma harboring epidermal growth factor receptor (EGFR) mutations and to explore the molecular factors affecting the efficacy of gefitinib. Tumor tissue, derived from either the original tumor or the metastatic or recurrent site was taken from chemo-naïve pts with advanced (stage IIIB, IV, and recurrent) pulmonary adenocarcinoma. Tumor genomic DNA underwent direct sequencing for EGFR exons 18, 19, 20, and 21. Patients with EGFR mutations received 250 mg of gefitinib daily until disease progression or unacceptable toxicity. The primary endpoint was objective response rate (ORR). Secondary endpoints were progression free survival (PFS), overall survival (OS) and tolerability. Out of 147 screened patients, 45 pts (31%) had EGFR mutations and received gefitinib. The most common EGFR mutations were in-frame exon 19 deletions (29 pts, 64%) and L858R point mutation in exon 21 (15 pts, 33%). One patient had atypical mutation of L861Q in exon 21. The ORR was 53.3% (95% CI, 38.6-67.9) and disease control rate (DCR) including stable disease was 86.7%. The median progression free survival (PFS) was 398 days and the median overall survival (OS) was 819 days. Treatment was well tolerated. Grade 3/4 adverse events (AEs) were reported by 6 patients and treatment-related Grade 3 AEs by 3 patients. There were no treatment-related Grade 4 AEs. Exploratory subgroup analysis according to the EGFR mutation subtypes was carried out. The ORR and DCR were higher in patients with exon 19 deletions than those with L858R (62.1% vs 33.3%; P = 0.0705 and 96.6% vs 66.7%; P = 0.0062, respectively). All 4 patients with progressive disease had a L858R mutation. No secondary resistant mutations such as T790M mutation or insertions in exon 20 were found in those patients. In addition, OS was significantly better in patients with exon 19 deletions than those with L858R (24-month OS rate was 72.1% vs 32.0%, P = 0.0148). Gefitinib as the first-line treatment for Korean patients with advanced pulmonary adenocarcinoma harboring EGFR mutations was effective and well tolerated. Subgroup analysis suggests that the benefit from gefitinib treatment was more prominent in patients with the exon 19 deletion mutations (ClinicalTrials.gov number, NCT00344773). 相似文献
Afatinib (Giotrif®, Gilotrif®) is an orally administered, irreversible inhibitor of the ErbB family of tyrosine kinases. In the first-line treatment of patients with advanced lung adenocarcinoma with activating epidermal growth factor receptor (EGFR) mutations, afatinib significantly prolonged progression-free survival (PFS) and time to treatment failure (TTF), but not overall survival (OS), compared with gefitinib (LUX-Lung 7 trial). In the overall population of patients receiving first-line treatment for advanced lung adenocarcinoma with activating EGFR mutations, afatinib significantly prolonged PFS, but not OS, compared with pemetrexed plus cisplatin (LUX-Lung 3 trial) or gemcitabine plus cisplatin (LUX-Lung 6 trial). However, in both LUX-Lung 3 and LUX-Lung 6, OS was significantly prolonged in the subgroup of patients with deletions in exon 19 receiving afatinib versus chemotherapy. In the second-line treatment of advanced squamous non-small cell lung cancer (NSCLC), afatinib significantly prolonged PFS and OS, compared with erlotinib, regardless of EGFR mutation status (LUX-Lung 8 trial). Afatinib had a predictable and manageable tolerability profile in patients with advanced NSCLC. In conclusion, afatinib is an important option for the first-line treatment of patients with advanced NSCLC and activating EGFR mutations, and provides an additional option for the treatment of patients with squamous NSCLC that has progressed following first-line platinum-based chemotherapy.
