**Positive Phase 3 results for Moderna and Merck’s personalized mRNA neoantigen therapy (intismeran autogene/mRNA-4157/V940) in resected high-risk melanoma, announced August 19, 2026, are the main driver of current trader sentiment.** The INTerpath-001 trial met its primary endpoint of recurrence-free survival and key secondary endpoint of distant metastasis-free survival when the individualized mRNA vaccine was combined with Keytruda (pembrolizumab), building on sustained 49% risk reduction seen in five-year Phase 2b follow-up. This marks the first late-stage success for a personalized mRNA cancer vaccine. The companies have indicated plans to engage regulators promptly and file a Biologics License Application (BLA) within months after presenting full data at an upcoming medical meeting. Market-implied odds reflect the momentum from Breakthrough Therapy Designation, a fully enrolled pivotal study, and regulatory discussions, tempered by typical review timelines that could push approval into 2027 despite accelerated pathways. Key upcoming catalysts include the data readout and formal submission, while any delays in filing or additional safety signals could shift probabilities.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated$48,969 Vol.
June 30, 2027
15%
December 31, 2027
68%
$48,969 Vol.
June 30, 2027
15%
December 31, 2027
68%
Intismeran autogene refers to the individualized neoantigen therapy developed by Moderna and Merck and evaluated in the Phase 3 INTerpath-001 trial (NCT05933577), also known as mRNA-4157 and V940, together with any brand, trade, or nonproprietary name later assigned to that product, as well as any renamed or modified version that the relevant company or the FDA identify as the same product or a direct continuation of the V940/mRNA-4157 program.
Differences in neoantigen composition between patients will not affect resolution. Changes to the product's formulation will not affect resolution, provided the FDA approves the product described above. Approval as part of a combination regimen will qualify. Approval for a narrower population than the one studied in INTerpath-001 will qualify. Approval for an indication other than melanoma will also qualify. Both standard and accelerated approval will qualify.
An approval is defined as:
For new drugs: FDA issuance of an approval letter for a New Drug Application (NDA) or Biologics License Application (BLA)
For already-marketed drugs seeking new indications: FDA approval of a supplemental NDA (sNDA) or supplemental BLA (sBLA) for the specific indication referenced
For generic drugs: FDA approval of an Abbreviated New Drug Application (ANDA)
For biosimilars: FDA approval of a 351(k) application
The following constitute qualifying approvals:
Standard approval (traditional approval based on clinical benefit), Accelerated approval (based on surrogate endpoints), Approval with Risk Evaluation and Mitigation Strategy (REMS), Approval with restricted distribution or indication limitations, except compassionate use/expanded access programs
The following do not constitute qualifying approvals:
Approvable letters that require additional actions before approval
Tentative approvals pending patent or exclusivity expiration
FDA requests for additional information or studies
Extension of Prescription Drug User Fee Act (PDUFA) dates
Approval for compassionate use or expanded access programs only
Approval only for export or for use outside the United States
Emergency Use Authorization (EUA) without full approval
Complete Response Letters (CRLs) indicating the application cannot be approved in its current form
If the listed drug is approved before the end of the specified period, the market will resolve to "Yes," regardless of potential Advisory Committee votes against approval or later withdrawal of approval.
Conditional approvals may include post-marketing requirements or commitments and still qualify.
The primary resolution source for this market will be official information from the FDA; however, a consensus of credible reporting may also be used.
Market Opened: Aug 20, 2026, 6:27 AM ET
Resolver
0x65070BE91...Intismeran autogene refers to the individualized neoantigen therapy developed by Moderna and Merck and evaluated in the Phase 3 INTerpath-001 trial (NCT05933577), also known as mRNA-4157 and V940, together with any brand, trade, or nonproprietary name later assigned to that product, as well as any renamed or modified version that the relevant company or the FDA identify as the same product or a direct continuation of the V940/mRNA-4157 program.
Differences in neoantigen composition between patients will not affect resolution. Changes to the product's formulation will not affect resolution, provided the FDA approves the product described above. Approval as part of a combination regimen will qualify. Approval for a narrower population than the one studied in INTerpath-001 will qualify. Approval for an indication other than melanoma will also qualify. Both standard and accelerated approval will qualify.
An approval is defined as:
For new drugs: FDA issuance of an approval letter for a New Drug Application (NDA) or Biologics License Application (BLA)
For already-marketed drugs seeking new indications: FDA approval of a supplemental NDA (sNDA) or supplemental BLA (sBLA) for the specific indication referenced
For generic drugs: FDA approval of an Abbreviated New Drug Application (ANDA)
For biosimilars: FDA approval of a 351(k) application
The following constitute qualifying approvals:
Standard approval (traditional approval based on clinical benefit), Accelerated approval (based on surrogate endpoints), Approval with Risk Evaluation and Mitigation Strategy (REMS), Approval with restricted distribution or indication limitations, except compassionate use/expanded access programs
The following do not constitute qualifying approvals:
Approvable letters that require additional actions before approval
Tentative approvals pending patent or exclusivity expiration
FDA requests for additional information or studies
Extension of Prescription Drug User Fee Act (PDUFA) dates
Approval for compassionate use or expanded access programs only
Approval only for export or for use outside the United States
Emergency Use Authorization (EUA) without full approval
Complete Response Letters (CRLs) indicating the application cannot be approved in its current form
If the listed drug is approved before the end of the specified period, the market will resolve to "Yes," regardless of potential Advisory Committee votes against approval or later withdrawal of approval.
Conditional approvals may include post-marketing requirements or commitments and still qualify.
The primary resolution source for this market will be official information from the FDA; however, a consensus of credible reporting may also be used.
Resolver
0x65070BE91...**Positive Phase 3 results for Moderna and Merck’s personalized mRNA neoantigen therapy (intismeran autogene/mRNA-4157/V940) in resected high-risk melanoma, announced August 19, 2026, are the main driver of current trader sentiment.** The INTerpath-001 trial met its primary endpoint of recurrence-free survival and key secondary endpoint of distant metastasis-free survival when the individualized mRNA vaccine was combined with Keytruda (pembrolizumab), building on sustained 49% risk reduction seen in five-year Phase 2b follow-up. This marks the first late-stage success for a personalized mRNA cancer vaccine. The companies have indicated plans to engage regulators promptly and file a Biologics License Application (BLA) within months after presenting full data at an upcoming medical meeting. Market-implied odds reflect the momentum from Breakthrough Therapy Designation, a fully enrolled pivotal study, and regulatory discussions, tempered by typical review timelines that could push approval into 2027 despite accelerated pathways. Key upcoming catalysts include the data readout and formal submission, while any delays in filing or additional safety signals could shift probabilities.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated


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