# mRNA Therapeutics & Cancer Vaccines: State of the Field (October 2026)

Research dossier · v1 · updated 2026-10-30 · 3,805 words · 40 sources · 29 claims · verification: verified

Covers personalized neoantigen mRNA cancer vaccines, lipid-based delivery, self-amplifying and circular RNA, and mRNA immunotherapies beyond vaccination, with trial phases, registered endpoints and registry status as of October 2026. The key takeaway is that a randomized Phase 3 test of an individualized neoantigen mRNA vaccine, in high-risk melanoma (INTerpath-001), is registered as active, not recruiting, with no results posted; the sources in this dossier contain no outcome data for it, so its efficacy is not reported here. Most other evidence in the field is single-arm, early-phase or preclinical.

## Contents

- Executive summary
- Background and core concepts
- Timeline of key milestones
- State of the art
  - Individualized neoantigen mRNA vaccines
  - Shared, dendritic-cell and investigator-initiated programs
  - Computational antigen selection
  - Delivery: lipid nanoparticles, lipoplexes and polymers
  - Self-amplifying and circular RNA
  - Non-vaccine mRNA immunotherapy
  - Quantitative benchmarks
- Open problems and active debates
- Major programs and players
- Outlook: what to watch
- Key papers
- Glossary

## Sample findings

- INTerpath-001 (NCT05933577) is a randomized, double-blind Phase 3 trial of intismeran autogene plus pembrolizumab versus placebo plus pembrolizumab in high-risk cutaneous melanoma; the registry lists an estimated enrollment of 1,089.
- The registry lists INTerpath-001 as active, not recruiting, with no results posted as of 2026-10-30; the sources in this dossier contain no outcome data for the trial, so no efficacy figures are reported for it.

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