학술논문
晚期非小细胞肺癌靶向治疗后失败模式及联合放疗临床意义 / Patterns of failure after targeted therapy and importance of combined radiotherapy for advanced non-small cell lung cancer
Document Type
Academic Journal
Author
Source
中华放射医学与防护杂志 / Chinese Journal of Radiological Medicine and Protection. 39(2):113-120
Subject
Language
Chinese
ISSN
0254-5098
Abstract
目的 探讨晚期非小细胞肺癌患者经表皮生长因子酪氨酸激酶抑制剂(EGFR-TKIs)治疗后的失败模式及联合放疗的意义.方法 分析北京大学肿瘤医院2009年1月至2013年6月接受EGFR-TKIs治疗的晚期伴EGFR外显子突变的非小细胞肺癌患者,采用Kaplan-Meier法分析不同失败模式及联合放疗对患者生存的影响.结果 符合入组条件患者111例,中位年龄59岁(35～80岁),中位随访时间27.7个月(6.6～85.3个月),中位无进展生存(PFS) 10.3个月(6.2～30.5个月),中位总生存(OS) 29.8个月(7.1～90.7个月).其中主要失败模式为原有病灶进展(65例,58.6％),主要失败部位为胸腔内病灶进展(57例,51.4％).寡进展患者(耐药时病灶数目1～3个)与≥4个病灶进展者比较,生存期明显延长,中位OS分别为32.5、26.7个月,差异有统计学意义(x2=4.888,P＜0.05).仅胸腔内进展43例,放疗9例,未放疗34例,两组患者再治疗的中位PFS分别为9.6、5.7个月,联合放疗组明显延长,差异有统计学意义(x2=9.013,P＜0.05);失败后再治疗的中位OS分别为28.1、13.2个月,两组间差异无统计学意义(P＞0.05).48例寡进展患者,放疗12例,未放疗36例,中位PFS分别为9.6、4.2个月,联合放疗组较未放疗组明显延长,差异有统计学意义(x2=5.482,P＜0.05);失败后再治疗的中位OS分别为26.0、11.8个月,两组差异无统计学意义(P＞0.05).结论 对于EGFR-TKIs治疗后仅胸腔内进展及寡进展的患者,联合局部放疗可以改善患者PFS.因此在1代EGFR-TKIs原发耐药的患者中,T790 M突变阴性或没有条件进行相应检测的这部分患者,在出现胸腔内进展或寡进展时,进行局部干预是非常重要的.
Objective To analyze clinical significance of failure patterns and combined radiotherapy for advanced non-small cell lung cancer after EGFR-TKIs treatment.Methods A total of 111 patients who were treated with EGFR-TKIs for advanced non-small cell lung cancer (NSCLC) with EGFR exon mutation in Peking University Cancer Hospital from January 2009 to June 2013 were retrospectively analyzed.The impact of various failure patterns and combined radiotherapy on survial were analyzed with Kaplan-Meier method.Results Totally 111 patients were enrolled in the study.The median follow-up was 27.7 months (6.6-85.3 months).The median age,median PFS andmedian OS were 59 years (35-80 years old),10.3 months (6.2-30.5 months),and 29.8 months (7.1-90.7 months),respectively.The main failure mode was the progress of the original lesion (65 cases,58.6％) and the main failure site was the progress of intrathoracic lesions (57 cases,51.4％).The survival time of patients with oligoprogress (1-3 lesions during drug resistance) was significantly extended compared with the ones whose lesions were ≥ 4.The median OS were 32.5 months and 26.7 months,respectively (x2 =4.888,P＜0.05).For 43 patients with only intrathoracic progressed,there were 9 patients treated with radiotherapy and 34 patients treated without radiotherapy.The median PFS was 9.6 and 5.7 months,respectively.The median PFS of combined radiotherapy group was significantly prolonged (x2 =9.013,P＜0.05).And the median OS of retreatment after failure were 28.1 and 13.2 months,respectively,with no significant difference between two groups (P＞0.05).For 48 patients with oligo-progress,there were 12 patients treated with radiotherapy and 36 patients treated without radiotherapy.The median PFS were 9.6 and 4.2 months,respectively.The median PFS of the group treated with combined radiotherapy was significantly longer than that of the group without combined radiotherapy treatment (x2 =5.482,P＜0.05).And the median OS of retreatment after failure were 26.0 and 11.8 months,respectively.There was no significant difference between the two groups(P＞0.05).Conclusions Combined local radiotherapy can improve the PFS of patients who had only intrathoracic progress or oligo-progress after EGFR-TKIs treatment.Therefore,the patients whose T790 M mutation indicates negative or who are not in the position to perform coressoponding detection under the intrathoracic/oligo progress stage.The local intervention plays a very critical role for patients who have primary drug restisitance to GEN 1 EGFR-TKIs.
Objective To analyze clinical significance of failure patterns and combined radiotherapy for advanced non-small cell lung cancer after EGFR-TKIs treatment.Methods A total of 111 patients who were treated with EGFR-TKIs for advanced non-small cell lung cancer (NSCLC) with EGFR exon mutation in Peking University Cancer Hospital from January 2009 to June 2013 were retrospectively analyzed.The impact of various failure patterns and combined radiotherapy on survial were analyzed with Kaplan-Meier method.Results Totally 111 patients were enrolled in the study.The median follow-up was 27.7 months (6.6-85.3 months).The median age,median PFS andmedian OS were 59 years (35-80 years old),10.3 months (6.2-30.5 months),and 29.8 months (7.1-90.7 months),respectively.The main failure mode was the progress of the original lesion (65 cases,58.6％) and the main failure site was the progress of intrathoracic lesions (57 cases,51.4％).The survival time of patients with oligoprogress (1-3 lesions during drug resistance) was significantly extended compared with the ones whose lesions were ≥ 4.The median OS were 32.5 months and 26.7 months,respectively (x2 =4.888,P＜0.05).For 43 patients with only intrathoracic progressed,there were 9 patients treated with radiotherapy and 34 patients treated without radiotherapy.The median PFS was 9.6 and 5.7 months,respectively.The median PFS of combined radiotherapy group was significantly prolonged (x2 =9.013,P＜0.05).And the median OS of retreatment after failure were 28.1 and 13.2 months,respectively,with no significant difference between two groups (P＞0.05).For 48 patients with oligo-progress,there were 12 patients treated with radiotherapy and 36 patients treated without radiotherapy.The median PFS were 9.6 and 4.2 months,respectively.The median PFS of the group treated with combined radiotherapy was significantly longer than that of the group without combined radiotherapy treatment (x2 =5.482,P＜0.05).And the median OS of retreatment after failure were 26.0 and 11.8 months,respectively.There was no significant difference between the two groups(P＞0.05).Conclusions Combined local radiotherapy can improve the PFS of patients who had only intrathoracic progress or oligo-progress after EGFR-TKIs treatment.Therefore,the patients whose T790 M mutation indicates negative or who are not in the position to perform coressoponding detection under the intrathoracic/oligo progress stage.The local intervention plays a very critical role for patients who have primary drug restisitance to GEN 1 EGFR-TKIs.