The FDA’s approval of Enhertu (trastuzumab deruxtecan) on May 15, 2026, for neoadjuvant and adjuvant use in HER2-positive early-stage breast cancer has driven the near-certain 99.3% market-implied odds. Positive Phase III results from the DESTINY-Breast05 and DESTINY-Breast11 trials demonstrated clear reductions in disease recurrence and progression risk, prompting the agency to act ahead of the scheduled May 18 decision. With the formal nod already secured and no outstanding regulatory hurdles, traders see virtually no path to reversal. The only theoretical risks—such as an unforeseen safety signal or administrative delay—remain negligible given the completed review and public confirmation.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedNEW
NEW
May 18, 2026
NEW
NEW
May 18, 2026
As of market creation, the FDA's expected decision date for the specified application is May 18, 2026.
This market will resolve to "Yes" if the U.S. Food and Drug Administration (FDA) grants full or conditional approval for Daiichi Sankyo & AstraZeneca's Enhertu as a treatment for neoadjuvant treatment of adult patients with HER2-positive breast cancer by June 1, 2026, 11:59 PM ET. Otherwise, this market will resolve to "No."
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 Amendments 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
This market will immediately resolve to "No" if the FDA issues a Complete Response Letter (CRL) or explicitly declines to approve the application. If the drug sponsor withdraws the application before the end of the specified period, the market will resolve to "No" immediately.
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 will be official information from the FDA; however, a consensus of credible reporting will also be used.The FDA’s approval of Enhertu (trastuzumab deruxtecan) on May 15, 2026, for neoadjuvant and adjuvant use in HER2-positive early-stage breast cancer has driven the near-certain 99.3% market-implied odds. Positive Phase III results from the DESTINY-Breast05 and DESTINY-Breast11 trials demonstrated clear reductions in disease recurrence and progression risk, prompting the agency to act ahead of the scheduled May 18 decision. With the formal nod already secured and no outstanding regulatory hurdles, traders see virtually no path to reversal. The only theoretical risks—such as an unforeseen safety signal or administrative delay—remain negligible given the completed review and public confirmation.
As of market creation, the FDA's expected decision date for the specified application is May 18, 2026.
This market will resolve to "Yes" if the U.S. Food and Drug Administration (FDA) grants full or conditional approval for Daiichi Sankyo & AstraZeneca's Enhertu as a treatment for neoadjuvant treatment of adult patients with HER2-positive breast cancer by June 1, 2026, 11:59 PM ET. Otherwise, this market will resolve to "No."
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 Amendments 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
This market will immediately resolve to "No" if the FDA issues a Complete Response Letter (CRL) or explicitly declines to approve the application. If the drug sponsor withdraws the application before the end of the specified period, the market will resolve to "No" immediately.
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 will be official information from the FDA; however, a consensus of credible reporting will also be used.
This market will resolve to "Yes" if the U.S. Food and Drug Administration (FDA) grants full or conditional approval for Daiichi Sankyo & AstraZeneca's Enhertu as a treatment for neoadjuvant treatment of adult patients with HER2-positive breast cancer by June 1, 2026, 11:59 PM ET. Otherwise, this market will resolve to "No."
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 Amendments 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
This market will immediately resolve to "No" if the FDA issues a Complete Response Letter (CRL) or explicitly declines to approve the application. If the drug sponsor withdraws the application before the end of the specified period, the market will resolve to "No" immediately.
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 will be official information from the FDA; however, a consensus of credible reporting will also be used.
Market Opened: Apr 29, 2026, 8:06 PM ET
Volume
$1,831End Date
May 18, 2026Market Opened
Apr 29, 2026, 8:06 PM ETResolver
0x65070BE91...As of market creation, the FDA's expected decision date for the specified application is May 18, 2026.
This market will resolve to "Yes" if the U.S. Food and Drug Administration (FDA) grants full or conditional approval for Daiichi Sankyo & AstraZeneca's Enhertu as a treatment for neoadjuvant treatment of adult patients with HER2-positive breast cancer by June 1, 2026, 11:59 PM ET. Otherwise, this market will resolve to "No."
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 Amendments 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
This market will immediately resolve to "No" if the FDA issues a Complete Response Letter (CRL) or explicitly declines to approve the application. If the drug sponsor withdraws the application before the end of the specified period, the market will resolve to "No" immediately.
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 will be official information from the FDA; however, a consensus of credible reporting will also be used.The FDA’s approval of Enhertu (trastuzumab deruxtecan) on May 15, 2026, for neoadjuvant and adjuvant use in HER2-positive early-stage breast cancer has driven the near-certain 99.3% market-implied odds. Positive Phase III results from the DESTINY-Breast05 and DESTINY-Breast11 trials demonstrated clear reductions in disease recurrence and progression risk, prompting the agency to act ahead of the scheduled May 18 decision. With the formal nod already secured and no outstanding regulatory hurdles, traders see virtually no path to reversal. The only theoretical risks—such as an unforeseen safety signal or administrative delay—remain negligible given the completed review and public confirmation.
As of market creation, the FDA's expected decision date for the specified application is May 18, 2026.
This market will resolve to "Yes" if the U.S. Food and Drug Administration (FDA) grants full or conditional approval for Daiichi Sankyo & AstraZeneca's Enhertu as a treatment for neoadjuvant treatment of adult patients with HER2-positive breast cancer by June 1, 2026, 11:59 PM ET. Otherwise, this market will resolve to "No."
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 Amendments 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
This market will immediately resolve to "No" if the FDA issues a Complete Response Letter (CRL) or explicitly declines to approve the application. If the drug sponsor withdraws the application before the end of the specified period, the market will resolve to "No" immediately.
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 will be official information from the FDA; however, a consensus of credible reporting will also be used.
This market will resolve to "Yes" if the U.S. Food and Drug Administration (FDA) grants full or conditional approval for Daiichi Sankyo & AstraZeneca's Enhertu as a treatment for neoadjuvant treatment of adult patients with HER2-positive breast cancer by June 1, 2026, 11:59 PM ET. Otherwise, this market will resolve to "No."
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 Amendments 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
This market will immediately resolve to "No" if the FDA issues a Complete Response Letter (CRL) or explicitly declines to approve the application. If the drug sponsor withdraws the application before the end of the specified period, the market will resolve to "No" immediately.
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 will be official information from the FDA; however, a consensus of credible reporting will also be used.
Volume
$1,831End Date
May 18, 2026Market Opened
Apr 29, 2026, 8:06 PM ETResolver
0x65070BE91...The FDA’s approval of Enhertu (trastuzumab deruxtecan) on May 15, 2026, for neoadjuvant and adjuvant use in HER2-positive early-stage breast cancer has driven the near-certain 99.3% market-implied odds. Positive Phase III results from the DESTINY-Breast05 and DESTINY-Breast11 trials demonstrated clear reductions in disease recurrence and progression risk, prompting the agency to act ahead of the scheduled May 18 decision. With the formal nod already secured and no outstanding regulatory hurdles, traders see virtually no path to reversal. The only theoretical risks—such as an unforeseen safety signal or administrative delay—remain negligible given the completed review and public confirmation.
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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