背景EGFR基因突变阳性肺腺癌脑转移患者的治疗仍是目前的研究热点和有争议的问题,没有标准的治疗模式。
目的探讨EGFR基因突变阳性肺腺癌脑转移患者经脑转移治疗后发生颅内失败的相关因素。
方法回顾性收集2011年1月至2018年6月河北医科大学第四医院确诊为EGFR突变阳性肺腺癌脑转移患者282例,整理282例患者的一般资料,包括年龄、性别、吸烟状况、卡氏评分、颅外控制情况、颅外转移器官数目、脑转移数目、脑转移症状、脑转移时间、脑转移治疗方案、肺原发灶治疗情况及肺癌专用诊断评估预后分级(Lung-molGPA)。全脑放疗结束4周或口服靶向药物4周评价颅内疗效并开始进行随访,记录脑转移后生存时间(OS-BM)、颅内无进展时间(iPFS)、颅内控制时间。采用Kaplan-Meier法绘制脑转移后生存曲线和颅内无进展生存曲线,治疗后颅内失败相关影响因素分析及亚组分析采用多因素Logistic回归分析。
结果(1)基本信息:282例EGFR基因突变阳性肺腺癌脑转移患者随访时间为3.0~94.8个月,中位随访时间为28.4个月。282例患者3年生存率为28.5%,中位OS-BM为45个月;3年颅内无进展生存率为38.4%,中位iPFS为24个月。(2)颅内失败患者分析:48.9%(138/282)的患者发生颅内失败;发生颅内失败患者的脑转移症状、脑转移治疗方式、Lung-molGPA与未发生颅内失败患者比较,差异均有统计学意义( P<0.05);多因素Logistic回归分析显示,脑转移治疗方式是发生颅内失败的影响因素〔 OR=1.992,95% CI(1.308,3.437), P=0.004〕;脑转移治疗方式中全脑放疗联合或不联合靶向药物治疗患者3年颅内无进展生存率为51.6%,高于单纯靶向药物治疗患者的26.7%(χ 2=10.769, P=0.001)。(3)颅内失败患者亚组分析:以中位颅内失败时间10.0个月为界限,分为早失败组71例和晚失败组67例;早失败组3年生存率为5.9%,低于晚失败组的42.1%(χ 2=51.888, P<0.001);多因素Logistic回归分析显示,颅外转移器官数目是脑转移治疗后颅内早失败的影响因素〔 OR=0.336,95% CI(0.126,0.894), P=0.029〕;颅外转移器官数目≥4个患者3年颅内无进展生存率为4.2%,低于颅外转移器官数目≤3个患者的14.0%(χ 2=4.993, P=0.025)。
结论EGFR突变阳性肺腺癌脑转移患者脑转移治疗后颅内失败影响因素为脑转移治疗方式,应用全脑放疗联合或不联合靶向药物治疗较单纯靶向药物治疗可以延缓颅内失败时间,约降低50%的颅内失败风险。颅外转移器官数目与脑转移治疗后颅内较早发生失败相关,颅外转移器官数目≥4个的患者发生颅内失败会更早。
BackgroundThe treatment of patients with brain metastasis (BM) from lung adenocarcinoma (LAC) with epidermal growth factor receptor (EGFR) mutation is a hot and controversial issue, as no standard treatment modality currently exists.
ObjectiveTo analyze the clinical factors associated with intracranial failure following BM treatment in BM patients from LAC with EGFR mutation.
MethodsIn this study, we retrospectively enrolled 282 patients with a confirmed diagnosis of BM from LAC with EGFR mutation from the Fourth Hospital of Hebei Medical University between January 2011 and June 2018. Baseline characteristics were obtained, containing age, gender, smoking history, Karnofsky Performance Status Scale score, extracranial disease control status, number of involved extracranial organs, number and symptoms of BMs, timing of BM development, treatment modality for BMs, treatment strategy for the primary lung tumor, and Lung-molGPA. At four weeks after the end of whole-brain radiation therapy (WBRT) or targeted oral therapy using tyrosine kinase inhibitors (TKIs) , we assessed the intracranial response, and delivered a follow-up to patients, during which the overall survival-BM (OS-BM) , intracranial progression-free survival (iPFS) and time of intracranial control were recorded. We plotted Kaplan-Meier curves for OS-BM and iPFS. We used multivariate Logistic regression analysis to explore clinical factors associated with intracranial failure and to further investigate the associated factors between two subgroups divided by the median time to intracranial failure〔early failure subgroup (≤10.0 months) and late failure subgroup (>10.0 months) 〕.
Results(1) Baseline characteristics: the median follow-up time was 28.4 months (range, 3.0 to 94.8 months) . The median OS-BM was 45 months, and the 3-year OS-BM rate was 28.5%. The median iPFS time was 24 months, and the 3-year iPFS rate was 38.4%. (2) Group analysis of intracranial failure: in all, 48.9% of the patients developed intracranial failure. BM symptoms and related treatment modality as well as Lung-molGPA were significantly different for those who developed intracranial failure as compared to those who did not in the baseline characteristics ( P<0.05) . Other baseline data showed no intergroup differences ( P<0.05) . Multivariate Logistic regression analysis showed that BM treatment modality was associated with intracranial failure〔 OR=1.992, 95% CI (1.308, 3.437) , P=0.004〕. The patients receiving WBRT combined with TKIs or not had a higher 3-year iPFS rate as compared to those receiving TKIs alone (51.6% vs 26.7%) (χ 2=10.769, P=0.001) . (3) Subgroup analysis of intracranial failure: early failure subgroup ( n=71) had a lower 3-year OS-BM rate than late failure subgroup ( n=67) (5.9% vs 42.1%) (χ 2=51.888, P<0.001) . By the multivariable analyses, the number of involved extracranial organs was associated with early intracranial failure〔 OR=0.336, 95% CI (0.126, 0.894) , P=0.029〕. The 3-year iPFS rate was 4.2% in patients with ≥4 involved extracranial organs, and 14.0% in those with ≤3 (χ 2=4.993, P=0.025) .
ConclusionFor patients with EGFR-mutated LAC with BM, BM treatment modality was associated with intracranial failure. Compared to the use of TKIs alone, using WBRT in combination with TKIs or not may delay the time to develop intracranial failure with an around 50% reduced risk. In addition, the number of involved extracranial organs was associated with early intracranial failure. The higher the number (≥4) , the earlier intracranial failure occurred.
SONG Y Z, ZHEN C J, BAI W W, et al. Intracranial failure analysis in patients with brain metastasis from lung adenocarcinoma harboring epidermal growth factor receptor mutation [J] . Chinese General Practice, 2021, 24 (29) : 3704-3710.
宋玉芝,甄婵军,白文文,等. EGFR基因突变阳性肺腺癌脑转移患者治疗后颅内失败的临床研究[J]. 中国全科医学,2021,24(29):3704-3710.
DOI:10.12114/j.issn.1007-9572.2021.00.540本刊2021年版权归中国全科医学杂志社所有
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临床特征 | 发生颅内失败组( n=138) | 未发生颅内失败组( n=144) | χ 2值 | P值 | |
---|---|---|---|---|---|
年龄 | 0.002 | 0.967 | |||
≤60岁 | 77(55.8) | 80(55.6) | |||
>60岁 | 61(44.2) | 64(44.4) | |||
性别 | 1.022 | 0.312 | |||
男 | 49(35.5) | 43(29.9) | |||
女 | 89(64.5) | 101(70.1) | |||
吸烟 | 0.839 | 0.360 | |||
否 | 106(76.8) | 117(81.3) | |||
是 | 32(23.2) | 27(18.7) | |||
卡氏评分(分) | 0.004 | 0.953 | |||
≤60 | 33(23.9) | 34(23.6) | |||
≥70 | 105(76.1) | 110(76.4) | |||
颅外控制 | 1.512 | 0.219 | |||
是 | 20(14.5) | 14(9.7) | |||
否 | 118(85.5) | 130(90.3) | |||
颅外转移器官数目 | 0.186 | 0.666 | |||
≤3个 | 113(81.9) | 115(79.9) | |||
≥4个 | 25(18.1) | 29(20.1) | |||
脑转移数目 | 0.183 | 0.669 | |||
单发 | 55(39.9) | 61(42.4) | |||
多发 | 83(60.1) | 83(57.6) | |||
脑转移症状 | 4.550 | 0.033 | |||
无 | 91(65.9) | 77(53.5) | |||
有 | 47(34.1) | 67(46.5) | |||
脑转移时间 | 0.581 | 0.446 | |||
初诊脑转移 | 104(75.4) | 114(79.2) | |||
治疗后脑转移 | 34(24.6) | 30(20.8) | |||
脑转移治疗方式 | 8.205 | 0.004 | |||
全脑放疗联合或不联合靶向药物治疗 | 56(40.6) | 83(57.6) | |||
单纯靶向药物治疗 | 82(59.4) | 61(42.4) | |||
肺原发灶治疗方式 | 0.969 | 0.325 | |||
手术或放疗 | 34(24.6) | 43(29.9) | |||
化疗或靶向药物治疗 | 104(75.4) | 101(70.1) | |||
Lung-molGPA | 8.271 | 0.004 | |||
≤2分 | 102(73.9) | 83(57.6) | |||
≥2.5分 | 36(26.1) | 61(42.4) |
注:Lung-molGPA=肺癌专用诊断评估预后分级
变量 | 赋值 |
---|---|
年龄 | 0=≤60岁,1=>60岁 |
性别 | 0=女性,1=男性 |
吸烟 | 0=否,1=是 |
卡氏评分 | 0=≤60分,1=≥70分 |
颅外控制 | 0=否,1=是 |
颅外转移器官数目 | 0=≤3个,1=≥4个 |
脑转移数目 | 0=单发,1=多发 |
脑转移症状 | 0=无,1=有 |
脑转移时间 | 0=治疗后脑转移,1=初诊脑转移 |
脑转移治疗方式 | 0=单纯靶向药物治疗,1=全脑放疗联合或不联合靶向药物治疗 |
肺原发灶治疗方式 | 0=手术或放疗,1=化疗或靶向药物治疗 |
Lung-molGPA | 0=≤2分,1=≥2.5分 |
变量 | B | SE | Waldχ 2值 | P值 | OR值 | 95% CI |
---|---|---|---|---|---|---|
年龄 | -0.028 | 0.253 | 0.012 | 0.912 | 0.973 | (0.593,1.596) |
性别 | -0.301 | 0.262 | 1.328 | 0.240 | 0.740 | (0.443,1.235) |
吸烟 | -0.044 | 0.427 | 0.011 | 0.918 | 0.957 | (0.414,2.210) |
卡氏评分 | 0.485 | 0.339 | 2.042 | 0.153 | 1.624 | (0.835,3.156) |
颅外控制 | 0.628 | 0.382 | 2.705 | 0.100 | 1.873 | (0.253,1.128) |
颅外转移器官数目 | 0.315 | 0.324 | 0.951 | 0.329 | 1.371 | (0.727,2.585) |
脑转移数目 | 0.093 | 0.363 | 0.066 | 0.798 | 1.098 | (0.539,2.236) |
脑转移症状 | 0.269 | 0.280 | 0.920 | 0.338 | 1.308 | (0.755,2.266) |
脑转移时间 | 0.301 | 0.402 | 0.561 | 0.454 | 1.352 | (0.614,2.974) |
脑转移治疗方式 | 0.689 | 0.242 | 8.124 | 0.004 | 1.992 | (1.308,3.437) |
肺原发灶治疗 | -0.232 | 0.318 | 0.534 | 0.465 | 0.793 | (0.426,1.477) |
Lung-molGPA | 0.239 | 0.294 | 0.660 | 0.417 | 1.270 | (0.713,2.261) |
变量 | B | SE | Waldχ 2值 | P值 | OR值 | 95% CI |
---|---|---|---|---|---|---|
年龄 | 0.596 | 0.358 | 2.762 | 0.096 | 1.814 | (0.899,3.663) |
性别 | 0.754 | 0.564 | 1.788 | 0.181 | 2.126 | (0.704,6.425) |
吸烟 | -0.525 | 0.449 | 1.371 | 0.242 | 0.591 | (0.245,1.425) |
卡氏评分 | -0.385 | 0.425 | 0.820 | 0.365 | 0.680 | (0.296,1.565) |
颅外控制 | -0.994 | 0.537 | 3.426 | 0.064 | 0.370 | (0.129,1.060) |
颅外转移器官数目 | -1.091 | 0.499 | 4.776 | 0.029 | 0.336 | (0.126,0.894) |
脑转移数目 | 0.702 | 0.480 | 2.137 | 0.144 | 2.019 | (0.787,5.176) |
脑转移症状 | -0.694 | 0.485 | 2.046 | 0.153 | 0.499 | (0.193,1.293) |
脑转移时间 | -0.354 | 0.567 | 0.391 | 0.532 | 0.702 | (0.231,2.130) |
脑转移治疗方式 | 0.095 | 0.464 | 0.042 | 0.838 | 1.099 | (0.422,2.732) |
肺原发灶治疗方式 | 0.344 | 0.523 | 0.433 | 0.510 | 1.411 | (0.506,3.933) |
Lung-molGPA | 0.543 | 0.447 | 1.473 | 0.225 | 1.721 | (0.716,4.137) |
宋玉芝,甄婵军,白文文,等. EGFR基因突变阳性肺腺癌脑转移患者治疗后颅内失败的临床研究[J].中国全科医学,2021,24(29):3704-3710.[www.chinagp.net]
周志国进行文章的构思与设计,论文的修订,对文章整体负责,监督管理;乔学英进行研究的实施与可行性分析,英文的修订;宋玉芝、甄婵军、白文文进行数据收集;宋玉芝进行数据整理,统计学处理,撰写论文;宋玉芝、周志国进行结果的分析与解释;李博、周志国负责文章的质量控制及审校。

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