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ASCO20 Day1 :绝胜烟柳满皇都

 八卦小和尚 2021-02-19

肺癌:ADAURA、CITYSCAPE、CM9LA、KN604

乳腺癌:KN355

DS8201:DESTINY-Lung01、DESTINY-CRC01、DESTINY-Gastric01

消化道肿瘤:KN177

泌尿肿瘤:JAVELIN-Bladder-100

肺癌

ADAURA:

  • 在II-IIIA期的患者中,Tagrisso辅助治疗使疾病复发或死亡风险降低83%(HR=0.17;95% CI:0.12,0.23;p<0.0001),达到试验的主要终点

  • 在包括IB-IIIA期的整体患者群中(关键次要终点),Tagrisso将疾病复发或死亡风险降低79%(HR=0.21;95% CI:0.16,0.28;p<0.0001)

  • OS尚未成熟,但直觉肯定是可以作出优效的

tiragolumab+atezolizumab一线治疗PD-L1+ NSCLC:

TIGIT是一类表达在T细胞、NK细胞在内的多种免疫细胞上的新型抑制型受体,一旦结合其位于APC或肿瘤细胞的配体PVR后即可抑制T细胞或NK细胞。通常和PD-L1表达有着很强的一致性,特别是在肺癌中的肿瘤浸润T细胞中。所以假设anti-TIGIT抗体是不是可以通过阻止TIGIT结合配体来恢复T细胞的应答,通常可以于anti-PD-1/PD-L1抗体互补。

Tiragolumab是IgG1κ型但Fc保留的anti-TIGIT全人源单抗,可以阻断TIGIT结合PVR,在临床前小鼠模型中anti-TIGIT和anti-PD-L1对控制肿瘤生长延长生存有协同效应

CITYSPACE研究设计:Troagolumab联合Atezolizumab对比安慰剂联合Atezolizumab一线治疗PD-L1 TPS≥1%(22C3 IHC)的EGFR及ALK 野生型的IV期NSCLC,主要终点ORR和PFS

基线基本平衡,性别和种族除外:≥65岁患者占了近60%,PD-L1 TPS≥50%的占了57%

初次分析时:相比安慰剂+Atezo,Tiragolumab+Atezo显著提升ORR并延长PFS

ORR的优势主要是PD-L1高表达的群体贡献

后续更新PFS,相比之前没有大的变化

PFS的优势也是由PD-L1高表达的群体贡献

安全性方面:

  • Gr3-5 AE 48% vs 44%,sAE5% vs 7%,都比较接近

  • 因AE引起的剂量调整或者中断 40% vs 28%,AE引起的治疗终止10% vs 9%

Tiragolumab+Atezolizumab组中显著升高的Gr3-4 AE只有脂肪酶升高、胸腔积液和胰腺炎(实验室检查),其余均为1-2级

这个前几天提过,好奇为什么对照那么差,结合这次结果,提出几个假设:1)Atezolizumab本身在PD-L1 TPS≥50%(22C3 IHC)的群体中就很差,因为IMPower 110用的是SP142,TPS≥50%(22C3 IHC)和TC3 or IC3 WT不能直接划等号,另外本次研究和IMPower 110的基线也不一样,尤其是TPS≥50%群体的基线也可能影响结果;2)Toiragolumab只在TPS≥50%群体中提升疗效,可能意味着TIGIT这类部分抑制型的检查点只在PD-L1高表达的群体中work

CheckMate-9LA

Nivo+IPI+2个疗程的化疗随机对比4个疗程的化疗(培美曲塞维持),主要终点OS

首次内部分析时候OS达到了预设的优效

两组基线总体还是平衡的,鳞癌及非鳞分别31%和69%,PD-L1<1及≥1%的分别~40%和60%,但高表达的化疗组更多一些

OS达到了预设的标准:15.6 vs 10.9 HR0.66,死亡风险降低34%

亚组分析中只有≥75yrs及无吸烟史的患者无法从N+I+化疗中获益,当然可能是因为样本都很小

从组织分型看,非鳞 HR 0.69,鳞癌HR 0.62

回顾KN189及KN407,OS HR 分别0.49和0.64,非鳞更弱一些,而且这还是在加了一个Ipi的情况,所以在肺癌里完整周期的化疗比Ipi更关键,另外2个疗程的化疗几个银子,Ipi...万恶的资本家!

所有的PD-L1表达亚组都能从N+I+化疗中获益,且HR值也相近

PFS 6.7 vs 5.0 mo HR 0.68,相比KN189及KN407更加一般(HR 分别0.52和0.56)

安全性方面:因TRAE引起的任意组分的治疗终止 16% vs 5%,在KN189及KN407中基本都是20% vs 10%

另外与KN189级CM227分别比较非鳞及PD-L1>1%部分的OS

EGFRex20ins NSCLC

KN604:有点阴沟翻船的感觉,诱导阶段化疗组只有4个周期,维持阶段免疫联合组也同样可选PCI,但是结果横向比较整体上不如Durvalumab。。。

布加替尼及阿来替尼

EA5161感觉OS有问题

Characterization of 4,712 KRAS NSCLC cases shows G12C is the most common subtype (40%) and among the different KRAS mutations, differences noted in PDL1, TMB, STK11 and others. Different KRAS mutation = different biology.

DS8201:当之无愧夜空中最亮的星

DESTINY-Lung01:HER2-mutated NSCLC cohort (42 pts) 

  • ORR: 61.9%(CR 2.4%,PR 59.5%) DCR: 90.5% mDOR: 7.75 mo

  • Estimated mPFS = 14.0 mo , OS not reached yet

  • All pts (42/42) had TEAEs; 64.3% were grade ≥ 3 (52.4% drug-related) 

DESTINY-CRC01 ≥ 3L HER2+ RASwt mCRC(n=53)

  •  ORR 45%, mPFS 6.9 mo

  • Two patients had grade 5 interstitial lung disease. 

DESTINY-Gastric01,NEJM在线

  • 在先前经治的HER2+ GC中,ORR (51% vs 14%) 和OS (12 vs 8 months)都有提升,其实两组的基线也不是很平衡,DS8201组先前≥4L的比化疗组高10%,更差一些,所以结果还是很有信服力的

  • ILD依旧是个问题(1例Gr 5),但不妨碍成为新的SoC

DOI: 10.1056/NEJMoa2004413

Of 187 treated patients, 125 received trastuzumab deruxtecan and 62 chemotherapy (55 received irinotecan and 7 paclitaxel). An objective response was reported in 51% of the patients in the trastuzumab deruxtecan group, as compared with 14% of those in the physician’s choice group (P<0.001). Overall survival was longer with trastuzumab deruxtecan than with chemotherapy (median, 12.5 vs. 8.4 months; hazard ratio for death, 0.59; 95% confidence interval, 0.39 to 0.88; P=0.01, which crossed the prespecified O’Brien–Fleming boundary [0.0202 on the basis of number of deaths]). The most common adverse events of grade 3 or higher were a decreased neutrophil count (in 51% of the trastuzumab deruxtecan group and 24% of the physician’s choice group), anemia (38% and 23%, respectively), and decreased white-cell count (21% and 11%). A total of 12 patients had trastuzumab deruxtecan–related interstitial lung disease or pneumonitis (grade 1 or 2 in 9 patients and grade 3 or 4 in 3), as adjudicated by an independent committee. One drug-related death (due to pneumonia) was noted in the trastuzumab deruxtecan group; no drug-related deaths occurred in the physician’s choice group.

乳腺癌

KEYNOTE-355:也是一个挺奇怪的设计,5个主要终点:PFS and overall survival (OS) in all patients, OS in patients with a combined positive score (CPS) ≥1, and PFS and OS in patients with PD-L1 CPS ≥10. 这次达到的是CPS≥10部分的PFS,但是和IMPassion133横向也不好比啊

消化系统肿瘤

KN177: Pembro对比(化疗±贝伐珠单抗或西妥昔单抗)一线治疗MSI-H的mCRC

主要研究终点是BICR评估PFSOS

  • 随访32.4个月,PFS 16.5 vs 8.2mo(HR 0.60,95%CI 0.45-0.80,p=0.0002),2年PFS率 48.3% vs 18.6%

  • ORR 43.8% vs 33.1%(p=0.0275),DoR NR vs 10.6mo

  • ≥Gr3 AE 22% vs 66%

Apa:这玩意儿有点勉强

单靶点还是差了点,看看人家大瑞瑞戈非尼(不可直接对比)

Study22:索拉非尼失败后的尝试,T300+D相比T75+D及单药会更好一些

泌尿系统肿瘤

JAVELIN-Bladder-100:虽然是LBA,但是也没什么关注度

一线化疗后不进展的、局部进展或转移的膀胱癌中,Avelumab相比BSC显著延长ITT人群的OS,死亡风险降低31%

KN-146更新:Pembro+Lenva in 2/3L mRCC

  • Prior regimens: anti-PD1/L1 (100%), Anti-PD1/L1+anti-VEGFR (65%) and Ipi-Nivo (37%).

  • ORR 高达51%,其中先前接受过anti-PD-1/PD-L1、anti-PD-1/PD-L1+anti-VEGF和Nivo+Ipi治疗的ORR分别55%、59%和47%

HIF2a抑制剂MK-6482治疗VHL突变相关的mRCC ORR 27.9%,TTR  23.7 wks.,DoR NR

results of Ph3 IMvigor-010 trial in adj. (Atezo Vs. Obs.) in high risk MIUC post neoadj. chemo with residual disease or not eligible for adj. cisplatin chemo. No statistical benefit for adjuvant atezo in this patient population

免疫治疗涉及的RCC基本都是ccRCC,剩下的其他

贝伐+厄洛替尼治疗遗传性平滑肌瘤病及肾细胞癌综合征(HLRCC)及散发性乳头状mRCC,有着很高的ORR,80-95%的病灶相比基线缩小,DoR在18个月左右,即便PD的患者对卡博也有应答

  • Bevacizumab+Erlotinib in patients with metastatic HLRCC or sporadic papillary mRCC. Very high ORR, almost all patients had a decrease in tumor burden, and long treatment duration

血液肿瘤

magrolimab+azatadine in AML and MDS:The therapy had a manageable safety profile and demonstrated durable responses, especially in pts with TP53mut.

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