ASCO 2020:19.4个月!雷莫卢单抗联合厄洛替尼黑马亮相

2020-06-03 任冉 健康界

基于该研究,FDA在大会期间批了一个EGFR肺癌适应证:正式批准雷莫芦单抗(一种抗血管生成药物)联合厄洛替尼作为携带EGFR19外显子缺失或外显子21突变的转移性非小细胞肺癌的一线治疗药物。

由于COVID-19疫情的原因,2020年美国临床肿瘤学会年会(ASCO2020)采取了线上会议的模式。

相比于线下会议,线上会议获取信息可能更加方便,即便如此,要不是因为FDA在大会期间批了一个EGFR肺癌适应证:正式批准雷莫芦单抗(一种抗血管生成药物)联合厄洛替尼作为携带EGFR19外显子缺失或外显子21突变的转移性非小细胞肺癌的一线治疗药物。大家稍不留神就容易错过这个重要的壁报,主要也是这个名字有点迷惑。

RELAY +:雷莫昔单抗联合吉非替尼在未经治疗的表皮生长因子受体(EGFR)突变的转移性非小细胞肺癌(NSCLC)患者中的探索性研究。

听听,探索性研究,啧啧,探索出个一线治疗来。下面我们就来看看这匹黑马到底有什么神奇的地方。

研究背景:

RELAY研究的III期随机部分(B部分; RELAY; NCT02411448)显示,在449例未经治疗的转移性非小细胞肺癌患者中,雷莫昔单抗(RAM)加厄洛替尼(ERL)相对于安慰剂加ERL的无进展生存期(PFS)显着提高(中位PFS:19.4 比12.4个月;分层风险比:0.59,95%CI:0.46-0.76,p <0.0001; 1年PFS率:71.9%比 50.7%)。在这里,我们报告了RELAY +(RELAY的其他队列; C部分)的初步结果,这是一项评估东亚地区RAM加吉非替尼(GEF)的开放标签,单臂,探索性研究。

研究方法:

图1  研究设计

先前未经治疗的具有转移性NSCLC和EGFR外显子19缺失(Ex19del)或外显子21取代突变(Ex21.L858R)的东亚患者接受RAM(10 mg / kg Q2W)加GEF(250 mg /天),直到疾病进展或出现无法接受的毒性。评估了1年PFS率(主要终点,假设RAM + GEF的1年PFS率为55%)、肿瘤反应、生物标志物和安全性。通过Guardant360 NGS对液体活检样本中EGFR T790M状态(基线/ 30天随访)进行了评估。

研究结果:

 

图2  RELAY研究的主要结果

总共招募了82名患者(日本:68;台湾:8;韩国:6);女性占65.9%,从不吸烟者占65.9%,Ex19del有43.9%。中位随访时间为13.8个月(范围:2.6–20.2;筛查率:58.5%),Ex19del组(n=36)和Ex21.L858R组(n=46)的1年PFS率(95%CI)分别为65.0%(52.4-75.1)、67.2%(48.6-80.3)和63.4%(45.0-77.1)。

图3  缓解率

客观缓解率为70.7%(95%CI:59.6–80.3),疾病控制率为98.8%(95%CI:93.4-100.0),此时反应的持续时间尚不成熟,筛查率为56.9%,中位数估计值为13.6个月(95%CI:11-1-18.2)。

图4 进展后EGRF T790M突变

在9例(78%;95%CI:45.3-93.7)患者中,有7例(78%)出现进展后EGFR T790M,随访30天,结果发现EGFR激活突变。

超过 5%的患者中报告了≥3级治疗紧急不良事件,包括ALT升高(23.2%),高血压(22.0%)和AST升高(12.2%)。

研究结论:

1年PFS率为65.0%,达到了RELAY +的主要终点。RAM+GEF在RELAY+中的疗效与RAM+ERL在RELAY+中的疗效相似,联合用药的安全性与单药相似。

扩展:

长江后浪推前浪,2017年的FLAURA研究报告中,奥希替尼以中位 PFS 18.9 个月的绝对优势刷新了既往所有一线治疗的记录。今年的RELAY +研究报告又将这个记录拔高了0.5个月,中位 PFS达到19.4个月。难能可贵的是,对该研究中使用联合方案耐药患者进行了基因检测分析,结果显示厄洛替尼联合或者不联合 ,两组T790M突变的发生率基本一致,这意味着患者耐药后进行二线使用三代靶向药物序贯治疗机会是一样的。AURA3研究结果显示,奥西替尼二线治疗EGFR T790M突变阳性NSCLC患者的中位PFS为10.1个月,也就是说,雷莫昔单抗联合吉非替尼一线治疗后,序贯奥西替尼二线治疗最长可以达到29个月的无进展生存期,高于目前所有的治疗方式。

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    2021-02-24 quxin068
  2. [GetPortalCommentsPageByObjectIdResponse(id=1939078, encodeId=00e219390e832, content=<a href='/topic/show?id=1c292818fd' target=_blank style='color:#2F92EE;'>#ASC#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=31, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=2818, encryptionId=1c292818fd, topicName=ASC)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=74808, createdName=quxin068, createdTime=Wed Feb 24 02:09:35 CST 2021, time=2021-02-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=601600, encodeId=675060160006, content=<a href='/topic/show?id=ce279885039' target=_blank style='color:#2F92EE;'>#雷莫芦单抗#</a>比贝伐更强一些, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=98850, encryptionId=ce279885039, topicName=雷莫芦单抗)], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20220519/c2ab253484ee4527a2d4e9589a4821ac/45de9bf494a54becb2ea4369c9d11e85.jpg, createdBy=7a3710, createdName=lovetcm, createdTime=Sat Jun 06 11:42:47 CST 2020, time=2020-06-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1332083, encodeId=7421133208389, content=<a href='/topic/show?id=f19136915a9' target=_blank style='color:#2F92EE;'>#厄洛替尼#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=36915, encryptionId=f19136915a9, topicName=厄洛替尼)], attachment=null, authenticateStatus=null, createdAvatar=http://thirdqq.qlogo.cn/qqapp/1103841572/6F20312C71B4B22F603078C6DCFA72CE/100, createdBy=d3572500071, createdName=ms306040998833292, createdTime=Fri Jun 05 02:09:35 CST 2020, time=2020-06-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1344241, encodeId=bbbf13442416c, content=<a href='/topic/show?id=7649283021' target=_blank style='color:#2F92EE;'>#ASCO 2020#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=37, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=2830, encryptionId=7649283021, topicName=ASCO 2020)], attachment=null, authenticateStatus=null, createdAvatar=https://thirdqq.qlogo.cn/qqapp/1103841572/656F31B644588474D1C46903A7F84373/100, createdBy=4e842500199, createdName=ms24272190615788285182, createdTime=Fri Jun 05 02:09:35 CST 2020, time=2020-06-05, status=1, ipAttribution=)]
    2020-06-06 lovetcm

    #雷莫芦单抗#比贝伐更强一些

    0

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