个体化新抗原疗法 mRNA-4157 (V940) 单独或与 Pembrolizumab 联用的 T 细胞反应在 KEYNOTE-603 1 期研究中。

IF 29.7 1区 医学 Q1 ONCOLOGY Cancer discovery Pub Date : 2024-11-01 DOI:10.1158/2159-8290.CD-24-0158
Justin F Gainor, Manish R Patel, Jeffrey S Weber, Martin Gutierrez, Julie E Bauman, Jeffrey M Clarke, Ricklie Julian, Aaron J Scott, Jessica L Geiger, Kedar Kirtane, Celine Robert-Tissot, Brandon Coder, Moomal Tasneem, Jing Sun, Wei Zheng, Lauren Gerbereux, Andressa Laino, Filippos Porichis, Jack Russella Pollard, Peijie Hou, Vasudha Sehgal, Xing Chen, Manju Morrissey, Hikmat N Daghestani, Igor Feldman, Lakshmi Srinivasan, Joshua P Frederick, Michelle Brown, Praveen Aanur, Robert Meehan, Howard A Burris
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引用次数: 0

摘要

mRNA-4157(V940)是一种个体化新抗原疗法(INT),它以多达34种患者特异性肿瘤新抗原为靶点,诱导T细胞反应并增强抗肿瘤活性。我们报告了在切除的非小细胞肺癌患者(A部分:1毫克mRNA-4157,n = 4)或切除的皮肤黑色素瘤患者(D部分:1毫克mRNA-4157 + 200毫克pembrolizumab,n = 12)中进行的首次人体1期KEYNOTE-603研究(NCT03313778)中T细胞对新抗原反应的表征,从机理上揭示了mRNA-4157的免疫原性。对安全性、耐受性和免疫原性进行了评估。所有患者都出现了≥1次治疗突发不良事件(AE);没有出现4/5级AE或剂量限制性毒性反应。联合治疗后,可观察到持续的mRNA-4157诱导的新抗原特异性T细胞反应以及细胞毒性CD8和CD4 T细胞的扩增。这些发现显示了新型 mRNA INT 方法在肿瘤学中的潜力。
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T-cell Responses to Individualized Neoantigen Therapy mRNA-4157 (V940) Alone or in Combination with Pembrolizumab in the Phase 1 KEYNOTE-603 Study.

mRNA-4157 (V940) is an individualized neoantigen therapy targeting up to 34 patient-specific tumor neoantigens to induce T-cell responses and potentiate antitumor activity. We report mechanistic insights into the immunogenicity of mRNA-4157 via characterization of T-cell responses to neoantigens from the first-in-human, phase 1, KEYNOTE-603 study (NCT03313778) in patients with resected non-small cell lung cancer (Part A: 1-mg mRNA-4157, n = 4) or resected cutaneous melanoma (Part D: 1-mg mRNA-4157 + 200-mg pembrolizumab, n = 12). Safety, tolerability, and immunogenicity were assessed. All patients experienced ≥1 treatment-emergent adverse event; there were no grade 4/5 adverse events or dose-limiting toxicities. mRNA-4157 alone induced consistent de novo and strengthened preexisting T-cell responses to targeted neoantigens. Following combination therapy, sustained mRNA-4157-induced neoantigen-specific T-cell responses and expansion of cytotoxic CD8 and CD4 T cells were observed. These findings show the potential of a novel mRNA individualized neoantigen therapy approach in oncology. Significance: The safety and immunogenicity results from this phase 1 study of mRNA-4157 as adjuvant monotherapy or combination therapy with pembrolizumab show generation of de novo and enhancement of existing neoantigen-specific T-cell responses and provide mechanistic proof of concept to support further development of mRNA-4157 for patients with resected solid tumors. See related commentary by Berraondo et al., p. 2021.

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来源期刊
Cancer discovery
Cancer discovery ONCOLOGY-
CiteScore
22.90
自引率
1.40%
发文量
838
审稿时长
6-12 weeks
期刊介绍: Cancer Discovery publishes high-impact, peer-reviewed articles detailing significant advances in both research and clinical trials. Serving as a premier cancer information resource, the journal also features Review Articles, Perspectives, Commentaries, News stories, and Research Watch summaries to keep readers abreast of the latest findings in the field. Covering a wide range of topics, from laboratory research to clinical trials and epidemiologic studies, Cancer Discovery spans the entire spectrum of cancer research and medicine.
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