Cited by 124Immunotherapy and Immune ResponsesCancer Immunotherapy and BiomarkersCAR-T cell therapy research

T-cell Responses to Individualized Neoantigen Therapy mRNA-4157 (V940) Alone or in Combination with Pembrolizumab in the Phase 1 KEYNOTE-603 Study

Gainor, Justin F., Patel, Manish R., Weber, Jeffrey S., Gutierrez, Martin, Bauman, Julie E., Clarke, Jeffrey M., Julian, Ricklie, Scott, Aaron J. +23 more·2024·Cancer Discovery

Published version of a preprint

Abstract

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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Crossref · 10.1158/2159-8290.cd-24-0158

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  • Clinical trials of mRNA-based immunotherapeutics encoding unmutated full-length TAAs in checkpoint inhibitor-treated melanoma and individualised mRNA-based immunotherapeutics encoding patient-specific mutated tumour neoantigens in pancreatic and lung cancer have shown encouraging results.

    “Clinical trials of mRNA-based immunotherapeutics encoding unmutated full-length TAAs in checkpoint inhibitor-treated melanoma [18] and individualised mRNA-based immunotherapeutics encoding patient-specific mutated tumour neoantigens in pancreatic and lung cancer [19, 20] have shown encouraging results.”

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Authors
Gainor, J. F., Patel, M. R., Weber, J. S., Gutierrez, M., Bauman, J. E., Clarke, J. M., Julian, R., Scott, A. J., Geiger, J. L., Kirtane, K., Robert-Tissot, C., Coder, B., Tasneem, M., Sun, J., Zheng, W., Gerbereux, L., Laino, A., Porichis, F., Pollard, J. R., Hou, P., Sehgal, V., Chen, X., Morrissey, M., Daghestani, H. N., Feldman, I., Srinivasan, L., Frederick, J. P., Brown, M., Aanur, P., Meehan, R., & Burris, H. A.
Affiliations
  • Massachusetts General Hospital (US)
  • Sarah Cannon (US)
  • NYU Langone Health (US)
  • Hackensack University Medical Center (US)
  • George Washington University (US)
  • Duke University (US)
  • University of Arizona Cancer Center (US)
  • Banner - University Medical Center Tucson (US)
  • Cleveland Clinic (US)
  • Moffitt Cancer Center (US)
  • 11Moderna, Inc., Cambridge, Massachusetts.
  • Moderna Therapeutics (United States) (US)
  • HiFiBiO Therapeutics (United States) (US)
Venue
Cancer Discovery
Published
2024-08-08
Volume
14
Issue
11
Pages
2209-2223
ISSN
  • 2159-8274 (ISSN-L)
  • 2159-8290
OpenAlex
W4401422221
Cited by
124
References
45
Citations by year
2026: 58 · 2025: 63 · 2024: 3
FWCI
20.74
Type
journal article
Language
en
Open access
closed
Locations
  • Cancer Discovery (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › Immunotherapy and Immune Responses
  • Health Sciences › Medicine › Oncology › Cancer Immunotherapy and Biomarkers
  • Health Sciences › Medicine › Oncology › CAR-T cell therapy research
Keywords
neoantigens, T cell response, pembrolizumab, non-small cell lung cancer, cutaneous melanoma, mRNA vaccines, immunogenicity, CD8+ T cells, CD4+ T cells, adjuvant therapy
MeSH terms
Antineoplastic Agents, Immunological, Adult, Aged, Antigens, Neoplasm, Carcinoma, Non-Small-Cell Lung, Female, Humans, Lung Neoplasms, Male, Melanoma, Middle Aged, Skin Neoplasms, T-Lymphocytes, Precision Medicine, Antibodies, Monoclonal, Humanized

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