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Trametinib Activity in Patients with Solid Tumors and Lymphomas Harboring BRAF Non-V600 Mutations or Fusions: Results from NCI-MATCH (EAY131).
Clinical Cancer Research ( IF 11.5 ) Pub Date : 2020-04-15 , DOI: 10.1158/1078-0432.ccr-19-3443
Douglas B Johnson 1 , Fengmin Zhao 2 , Marcus Noel 3 , Gregory J Riely 4 , Edith P Mitchell 5 , John J Wright 6 , Helen X Chen 6 , Robert J Gray 2 , Shuli Li 2 , Lisa M McShane 6 , Larry V Rubinstein 6 , David Patton 6 , P Mickey Williams 7 , Stanly R Hamilton 8 , Barbara A Conley 6 , Carlos L Arteaga 9 , Lyndsay N Harris 6 , Peter J O'Dwyer 10 , Alice P Chen 6 , Keith T Flaherty 11
Affiliation  

PURPOSE Substantial preclinical evidence and case reports suggest that MEK inhibition is an active approach in tumors with BRAF mutations outside the V600 locus, and in BRAF fusions. Thus, Subprotocol R of the NCI-MATCH study tested the MEK inhibitor trametinib in this population. PATIENTS AND METHODS The NCI-MATCH study performed genomic profiling on tumor samples from patients with solid tumors and lymphomas progressing on standard therapies or with no standard treatments. Patients with prespecified fusions and non-V600 mutations in BRAF were assigned to Subprotocol R using the NCI-MATCHBOX algorithm. The primary endpoint was objective response rate (ORR). RESULTS Among 50 patients assigned, 32 were eligible and received therapy with trametinib. Of these, 1 had a BRAF fusion and 31 had BRAF mutations (13 and 19 with class 2 and 3 mutations, respectively). There were no complete responses; 1 patient (3%) had a confirmed partial response (patient with breast ductal adenocarcinoma with BRAF G469E mutation) and 10 patients had stable disease as best response (clinical benefit rate 34%). Median progression-free survival (PFS) was 1.8 months, and median overall survival was 5.7 months. Exploratory subgroup analyses showed that patients with colorectal adenocarcinoma (n = 8) had particularly poor PFS. No new toxicity signals were identified. CONCLUSIONS Trametinib did not show promising clinical activity in patients with tumors harboring non-V600 BRAF mutations, and the subprotocol did not meet its primary endpoint.

中文翻译:

曲美替尼在携带 BRAF 非 V600 突变或融合的实体瘤和淋巴瘤患者中的活性:来自 NCI-MATCH (EAY131) 的结果。

目的大量临床前证据和病例报告表明,MEK 抑制是治疗 V600 基因座外 BRAF 突变和 BRAF 融合肿瘤的一种有效方法。因此,NCI-MATCH 研究的子方案 R 在该人群中测试了 MEK 抑制剂曲美替尼。患者和方法 NCI-MATCH 研究对接受标准治疗或未接受标准治疗的实体瘤和淋巴瘤患者的肿瘤样本进行基因组分析。使用 NCI-MATCHBOX 算法将 BRAF 中具有预先指定的融合和非 V600 突变的患者分配到子方案 R。主要终点是客观反应率(ORR)。结果 在分配的 50 名患者中,32 名符合条件并接受了曲美替尼治疗。其中,1 例具有 BRAF 融合,31 例具有 BRAF 突变(13 例和 19 例具有 2 类和 3 类突变,分别)。没有完整的答复;1 名患者 (3%) 得到确认的部分反应(患有 BRAF G469E 突变的乳腺导管腺癌患者),10 名患者的疾病稳定为最佳反应(临床获益率为 34%)。中位无进展生存期(PFS)为 1.8 个月,中位总生存期为 5.7 个月。探索性亚组分析表明结直肠腺癌患者 (n = 8) 的 PFS 特别差。没有发现新的毒性信号。结论 曲美替尼在携带非 V600 BRAF 突变的肿瘤患者中未显示出有前途的临床活性,并且子方案未达到其主要终点。1 名患者 (3%) 得到确认的部分反应(患有 BRAF G469E 突变的乳腺导管腺癌患者),10 名患者的疾病稳定为最佳反应(临床获益率为 34%)。中位无进展生存期(PFS)为 1.8 个月,中位总生存期为 5.7 个月。探索性亚组分析表明结直肠腺癌患者 (n = 8) 的 PFS 特别差。没有发现新的毒性信号。结论 曲美替尼在携带非 V600 BRAF 突变的肿瘤患者中未显示出有前途的临床活性,并且子方案未达到其主要终点。1 名患者 (3%) 得到确认的部分反应(患有 BRAF G469E 突变的乳腺导管腺癌患者),10 名患者的疾病稳定为最佳反应(临床获益率为 34%)。中位无进展生存期(PFS)为 1.8 个月,中位总生存期为 5.7 个月。探索性亚组分析表明结直肠腺癌患者 (n = 8) 的 PFS 特别差。没有发现新的毒性信号。结论 曲美替尼在携带非 V600 BRAF 突变的肿瘤患者中未显示出有前途的临床活性,并且子方案未达到其主要终点。探索性亚组分析表明结直肠腺癌患者 (n = 8) 的 PFS 特别差。没有发现新的毒性信号。结论 曲美替尼在携带非 V600 BRAF 突变的肿瘤患者中未显示出有前途的临床活性,并且子方案未达到其主要终点。探索性亚组分析表明结直肠腺癌患者 (n = 8) 的 PFS 特别差。没有发现新的毒性信号。结论 曲美替尼在携带非 V600 BRAF 突变的肿瘤患者中未显示出有前途的临床活性,并且子方案未达到其主要终点。
更新日期:2020-04-15
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