World first personalised cancer vaccine stops disease returning in major trial

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1. 1

   World first personalised cancer vaccine stops disease returning in major trial

   BBC NewsPublished Oct 23, 2026Checked Oct 23, 2026

   “Tony Chapman, 75, from Corby in the East Midlands was one of the 1,100 melanoma patients enrolled on the vaccine trial A new personalised cancer vaccine given alongside a widely used immunotherapy drug has cut the risk of patients dying or their skin cancer returning by 42% in a major clinical trial. The researchers involved say the results could mark a turning point in cancer treatment, bringing personalised medicine a step closer. The trial, involving more than 1,100 patients, also found that the new drug combination reduced the risk of melanoma, a type of skin cancer, spreading by 38% over two years. The drug manufacturers MSD and Moderna say the same approach is already being tested against other tumours, including kidney, bladder and lung cancer. Independent cancer experts described the results as impressive but said longer-term studies were still needed to establish whether the treatment really helps most patients live longer, on average. The new approach is aimed at cancer patients who have already had their tumour removed through surgery. In the trial, 1,137 adults were given Keytruda, an established immunotherapy drug which helps the body's immune system find and attack cancer cells. About two-thirds also received an experimental vaccine based on the same mRNA technology used in some Covid jabs, with the rest being given a placebo or dummy drug. The vaccine, called Intismeran, uses the same mRNA technology as some Covid jabs.”

2. 2

   Personalised cancer vaccine slows melanoma recurrence, suggest topline phase III results

   Pharmaceutical journal/˜The œpharmaceutical journalPublished Jan 1, 2026Checked Oct 23, 2026

   “A personalised cancer therapy trial has met its primary endpoint of recurrence-free survival in patients with completely resected high-risk melanoma, manufacturers Merck and Moderna have announced. In a joint statement published on 19 August 2026, Merck and Moderna said that the phase III INTerpath-001 trial was aimed to evaluate the safety and efficacy of intismeran […]”

3. 3

   mRNA-Based Therapy in Melanoma, Personalized Neoantigen Vaccines and the Future of Precision Immunotherapy

   Perspectivas en Ciencias Médicas y Biológicas (Pochileev)Published Oct 2, 2026Checked Oct 23, 2026

   “The clinical development of mRNA-based individualized neoantigen therapy has progressed rapidly. In the phase IIb KEYNOTE-942 study, mRNA-4157/V940 combined with pembrolizumab improved recurrence-related outcomes compared with pembrolizumab alone in patients with resected high-risk melanoma. In August 2026, the phase III INTerpath-001 trial reported statistically significant and clinically meaningful improvements in both recurrence-free survival and distant metastasis-free survival for the combination of intismeran autogene (V940) and pembrolizumab compared with pembrolizumab alone. This represents an important milestone for mRNA-based cancer therapy. Future directions include optimization of neoantigen prediction, incorporation of multi-omic tumor profiling, improved lipid nanoparticle delivery, combination with immune checkpoint blockade and cellular therapies, and development of mRNA constructs capable of modifying the tumor microenvironment. The integration of genomic, transcriptomic, epigenetic and immunological information may ultimately enable dynamic, continuously personalized mRNA therapy for melanoma.”

4. 4

   Personalized mRNA Neoantigen Vaccines Reach Phase III: A Critical Commentary on the INTerpath-001 Melanoma Trial

   Qeios (Ahmad et al.)Published Sep 3, 2026Checked Oct 23, 2026

   “This is the first positive phase III readout anywhere for an individualized neoantigen therapy and for an mRNA-based cancer treatment, and it follows five-year phase IIb data (KEYNOTE-942) showing a 49% reduction in the risk of recurrence or death and a 59% reduction in the risk of distant metastasis [3]. We provide a critical commentary situating this announcement within the broader evidence trail (phase IIb to phase III), the mechanism of action of individualized neoantigen vaccination, and the methodological caveats that should temper interpretation at this stage, including the trial's reliance on a surrogate endpoint, the absence of peer-reviewed effect sizes, and unresolved questions about manufacturing scale and equitable access [4]. We conclude that this result represents an important platform validation for personalized cancer vaccination, though it does not yet constitute a change in the standard of care.”

5. 5

   Review of: "Personalized mRNA Neoantigen Vaccines Reach Phase III: A Critical Commentary on the INTerpath-001 Melanoma Trial"

   Research paper (Schmidt)Published Sep 9, 2026Checked Oct 23, 2026

   “y context, including the preceding randomized phase IIb KEYNOTE-942 experience.The comparison of the two trials is useful and clearly illustrates the important methodological progression from a relatively small open-label phase IIb study to a large, double-blind, placebo-controlled phase III trial.I particularly appreciate the restrained interpretation of the currently available phase III evidence.The authors explicitly distinguish a positive phase III topline result from a demonstrated overall-survival bene t or an immediate change in clinical standard of care.They appropriately emphasize that hazard ratios, con dence intervals, detailed safety data, subgroup analyses, and ultimately mature overallsurvival data remain necessary before the magnitude and clinical relevance of the bene t can be fully assessed.This avoids the excessive enthusiasm that sometimes accompanies major developments in personalized cancer vaccination and makes the commentary scienti cally credible.The discussion of potential limitations is similarly well-judged.In particular, the authors appropriately acknowledge that melanoma represents an unusually favorable biological setting for neoantigen Qeios qeios.com”

6. 6

   Advances in Therapeutic Melanoma Vaccines (2010-2025).

   Vaccines (Bian et al.)Published Aug 7, 2026Checked Oct 23, 2026

   “There is one active Phase III clinical trial for melanoma vaccines in the US. Key principles of melanoma vaccinology include adjuvant, antigen, and delivery platform selection. From 2010 to 2025, four vaccine candidates advanced to Phase III trials, two provided Phase III results for peer review, one trial is ongoing, and no vaccines have been FDA-approved. Inconsistent reporting of outcomes and a lack of published results limited comparability across studies, precluding formal meta-analysis. Therapeutic melanoma vaccine options remain limited by translational challenges in study design and reporting gaps. This review synthesizes contemporary clinical trial activity and immunologic principles to inform future research.”