Biotech Tracker
MilestoneJun 26, 2026123 days ago

CHMP positive opinion recommends EU approval of DAYBU (trofinetide) in Rett

CHMP positive opinion recommends EU approval of DAYBU (trofinetide) in Rett, on Jun 26, 2026. A company milestone for ACADIA (trofinetide (DAYBU) for Rett syndrome): a step in the program rather than a decision or a data readout.

Plain-English summary generated from this entry’s own fields (drug, condition, stage, date). Glossary

DetailsCompany milestone
Company
ACADIA Pharmaceuticals Inc. ACAD
Drug
trofinetide (DAYBU)
For
Rett syndrome
Stage
Regulatory (EU MAA re-examination)
When
Jun 26, 2026
Source note
Following the re-examination procedure, CHMP adopted a positive opinion recommending EU marketing authorization for DAYBU (trofinetide) for neurobehavioral symptoms of Rett syndrome in patients aged five and older. A European Commission decision was expected in the following months.
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ACADIA Pharmaceuticals Inc.
3 upcoming · 4 past catalysts
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Drug
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For
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Stage
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When
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Source note
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Plain-English summary generated from this entry’s own fields (drug, condition, stage, date). Glossary · Open this catalyst’s page

ApprovalACADACADIAH2 2026

ACADIA expects European regulators to decide on DAYBUE (trofinetide) for Rett syndrome (adults and children 5 years and older) — EU in the second half of 2026 (no exact date yet). An approval lets the company start selling it in that market.

More details
Entry
European Commission decision on trofinetide (DAYBUE) in Rett syndrome · Regulatory approval
Drug
DAYBUE (trofinetide)
For
Rett syndrome (adults and children 5 years and older) — EU
Stage
CHMP positive opinion adopted; EC decision pending
When
H2 2026 · the company gave a window, not a day
Source note
Acadia's Q2 2026 earnings release states CHMP adopted a positive opinion recommending EU marketing authorization; the European Commission decision typically follows within about two months (timing inferred, not company-stated).
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Plain-English summary generated from this entry’s own fields (drug, condition, stage, date). Glossary · Open this catalyst’s page

Trial resultsACADACADIAH2 2026

ACADIA expects to report results from its Phase 3 study of trofinetide (DAYBUE) for Rett syndrome (Japan) in the second half of 2026 (no exact date yet). Phase 3 is the last stage before a drug can be approved, so this result usually decides the program’s future.

More details
Entry
Trofinetide Japan Ph3 Rett syndrome topline (Oct 2026–Mar 2027 window) · Clinical trial results (readout / topline data)
Drug
trofinetide (DAYBUE)
For
Rett syndrome (Japan)
Stage
Phase 3 · the last stage before a drug can be approved
When
H2 2026 · the company gave a window, not a day
Source note
Guidance from Acadia's JPM 2026 update (Jan 13, 2026); not re-stated in the Q2 2026 release. Company window runs October 2026 through March 2027, so the date field is set to 2026-H2 only as the earliest half of that window.
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Plain-English summary generated from this entry’s own fields (drug, condition, stage, date). Glossary · Open this catalyst’s page