LBPO.CL04 · 临床研究 · Late-Breaking
RELATIVITY-020 A-C部分中nivolumab加relatlimab(NIVO+RELA)在实体瘤中的剂量递增和扩增
Dose escalation and expansion of nivolumab plus relatlimab (NIVO + RELA) in solid tumors in RELATIVITY 020 Parts A-C
作者与单位 Authors & Affiliations
摘要 Abstract
中文摘要
背景:基于RELATIVITY-047的结果,NIVO+RELA已获批用于不可切除或转移性黑色素瘤,剂量为480 mg NIVO+160 mg RELA,每4周一次(Q4W)。RELATIVITY-020(NCT01968109)是一项1/2a期、剂量递增和队列扩增的开放标签研究,考察RELA±NIVO在晚期实体瘤中的应用。A-C部分考察了剂量递增和向实体瘤类型的扩增。
方法:肿瘤类型和缩写见表。A部分是在免疫肿瘤学(IO)治疗初治实体瘤患者(pts)中以RELA单药20-800 mg进行的剂量递增分析,并在IO难治(RF)NSCLC和RCC中进行剂量扩增研究(A1)。B部分是NIVO+RELA跨肿瘤类型加宫颈癌、卵巢癌和结直肠癌的剂量递增,从Q2W 80+20至240+240 mg或Q4W 480+160至480+1440 mg。A和B部分的主要终点为安全性。C部分为NIVO+RELA 240+80 Q2W的扩增(膀胱癌为480+160 Q4W)。终点为安全性以及BICR评估的ORR、疾病控制率和缓解持续时间。
结果:基线LAG-3表达≥1%在各队列中相当(24-41%)。最短随访(月)为:87-110(A部分)、44(B)和61-84(C)。NIVO+RELA剂量递增显示出可接受的安全性特征,未确定最大耐受剂量(MTD)。3-4级治疗相关不良事件在所有部分中约16%的患者中发生,导致4-11%的患者停药。在C部分测试的所有肿瘤类型中均观察到疗效(见表)。RELA暴露量随剂量成比例增加,无论作为联合还是单药。未发现NIVO与RELA之间的药代动力学相互作用,且RELA和NIVO的抗药抗体和中和抗体发生率均较低。
结论:NIVO+RELA在多种不同肿瘤类型中显示出初步疗效。在IO初治和IO RF患者中均观察到临床活性,毒性可耐受。尽管未达到MTD,但PK数据支持NIVO 480+RELA 160 mg剂量。
表 MEL初治
n=66 NSCLC初治
n=24 RCC初治
n=26 头颈部初治
n=65 HCC初治
n=63 胃癌初治
n=93 膀胱癌初治
n=36 MEL RF
n=150 NSCLC RF
n=57 BICR ORR,%(95% CI)47(35-60)29(13-51)15(4-35)15(8-26)16(8-27)9(4-16)31(16-48)11(6-17)5(1-15) mPFS,月(95% CI)11.6(3.7-16.6)7.3(1.8-11.0)3.4(1.6-5.6)3.6(1.9-4.1)3.5(1.9-3.8)1.8(1.7-1.9)3.1(1.8-8.9)2.0(1.9-3.5)3.2(1.8-3.7) 12个月PFS率(95% CI)48(35-60)28(11-47)NA 17(8-27)24(14-36)9(4-16)25(12-41)13(8-20)11(4-21) mOS,月(95% CI)34.6(18.9-NA)16.3(8.6-42.2)17.2(9.0-43.8)12.0(7.2-17.5)10.3(8.3-15.3)6.1(4.9-9.0)12.1(5.8-26.0)14.4(10.5-17.8)11.9(8.6-15.0) 12个月OS率(95% CI)76(63-84)52(31-70)61(39-77)49(36-60)46(33-58)29(20-39)53(35-67)55(47-63)47(34-60) BICR,盲法独立中心评审;CI,置信区间;HCC,肝细胞癌;MEL,黑色素瘤;mo,月;mOS,中位总生存;mPFS,中位无进展生存;NA,不可用;NSCLC,非小细胞肺癌;ORR,客观缓解率;RCC,肾细胞癌;RF,难治。
查看英文原文 English abstract
Background: NIVO + RELA is approved for unresectable or metastatic melanoma at 480 mg NIVO + 160 mg RELA Q4W based on results from RELATIVITY-047. RELATIVITY-020 (NCT01968109) was a phase 1/2a, dose escalation and cohort expansion open-label study investigating RELA +/− NIVO in advanced solid tumors. Parts A-C investigated dose escalation and expansion into solid tumor types.
Methods: See Table for tumor types and abbreviations. Part A was a dose escalation analysis in patients (pts) with immuno-oncology (IO) treatment-naive solid tumors with RELA monotherapy at 20-800 mg with dose expansion studies in IO RF NSCLC and RCC (A1). Part B was NIVO + RELA dose‑escalation across tumor types plus cervical, ovarian, and colorectal cancer from Q2W 80 + 20 to 240 + 240 mg or Q4W 480 + 160 to 480 + 1440 mg. Primary endpoint in Parts A and B was safety. Part C was expansion at NIVO + RELA 240 + 80 Q2W (with bladder at 480 + 160 Q4W). Endpoints were safety and BICR‑assessed ORR, disease control rate, and duration of response.
Results: Baseline LAG‑3 expression ≥ 1% was comparable across cohorts (24-41%). Minimum follow-up in mo was: 87-110 (Part A), 44 (B), and 61-84 (C). NIVO + RELA dose escalation demonstrated an acceptable safety profile, with no maximum tolerated dose (MTD) identified. Grade 3-4 treatment-related adverse events occurred in approximately 16% of pts across all Parts, leading to discontinuation in 4-11% of pts. Efficacy was noted across all tumor types tested in Part C (Table). RELA exposure increased dose‑proportionally as combination or monotherapy. No pharmacokinetic interaction between NIVO and RELA was identified and there was a low incidence of antidrug and neutralizing antibodies for both RELA and NIVO.
Conclusions: NIVO + RELA demonstrated preliminary efficacy across several different tumor types. Clinical activity was observed in both IO naive and IO RF pts, with tolerable toxicity observed. Although no MTD was reached, PK data supported the NIVO 480 + RELA 160 mg dose.
Table MEL naive
n = 66 NSCLC naive
n = 24 RCC naive
n = 26 Head/neck naive
n = 65 HCC naive
n = 63 Gastric naive
n = 93 Bladder naive
n = 36 MEL RF
n = 150 NSCLC RF
n = 57 BICR ORR, % (95% CI) 47 (35-60) 29 (13-51) 15 (4-35) 15 (8-26) 16 (8-27) 9 (4-16) 31 (16-48) 11 (6-17) 5 (1-15) mPFS, mo (95% CI) 11.6 (3.7-16.6) 7.3 (1.8-11.0) 3.4 (1.6-5.6) 3.6 (1.9-4.1) 3.5 (1.9-3.8) 1.8 (1.7-1.9) 3.1 (1.8-8.9) 2.0 (1.9-3.5) 3.2 (1.8-3.7) 12-mo PFS rates(95% CI) 48 (35-60) 28 (11-47) NA 17 (8-27) 24 (14-36) 9 (4-16) 25 (12-41) 13 (8-20) 11 (4-21) mOS, mo (95% CI) 34.6 (18.9-NA) 16.3 (8.6-42.2) 17.2 (9.0-43.8) 12.0 (7.2-17.5) 10.3 (8.3-15.3) 6.1 (4.9-9.0) 12.1 (5.8-26.0) 14.4 (10.5-17.8) 11.9 (8.6-15.0) 12-mo OS rates (95% CI) 76 (63-84) 52 (31-70) 61 (39-77) 49 (36-60) 46 (33-58) 29 (20-39) 53 (35-67) 55 (47-63) 47 (34-60) BICR, blinded independent central review; CI, confidence interval; HCC, hepatocellular carcinoma; MEL, melanoma; mo, months; mOS, median overall survival; mPFS, median progression-free survival, NA, not available; NSCLC, non-small cell lung cancer, ORR, objective response rate; RCC, renal cell carcinoma; RF, refractory.
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