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CORAL Phase 3 MDD Topline

SAGE·ZURZUVAE·Major Depressive Disorder··NCT04442490
current best date
Q1
'27
QTR8 months
Takeaway

Phase 3 efficacy readout for zuranolone added to SSRIs/SNRIs in MDD. Two prior MDD trials (MOUNTAIN, WATERFALL) missed primary endpoints. Watch: HAM-D17 change at week 15 vs. placebo, durability beyond the 14-day dosing course.

What’s at stake

market · comparables · base rate · prior moves
Market opportunity
company filings
Peer comparables
1 readout
ClinicalTrials.gov
Stage base rate
~58%
BIO Industry Analysis 2023 (2011–2020)
Avg prior-readout move
historical price reactions
Drug
small molecule
ZURZUVAE
zuranolone · INN
MoApositive allosteric modulator of GABA-A

ZURZUVAE (zuranolone) is a once-daily oral pill co-developed by Sage Therapeutics and Biogen that acts as a positive allosteric modulator of GABA-A receptors — the brain's primary inhibitory receptors — to rapidly restore neural balance during depressive episodes. Unlike traditional antidepressants that require continuous daily dosing, zuranolone is given as a short 14-day course intended to reset dysregulated neural circuits. It is the first oral therapy specifically approved for postpartum depression (PPD) and is also being studied as an adjunct to standard antidepressants in major depressive disorder (MDD).

Indication
Neurology
Major Depressive Disorder
MeSH · D003866

No primer in glossary yet.

Trial
active
NCT04442490
CORAL Phase 3 Zuranolone Adjunctive in MDD
Phase
Ph 3
N
540
Primary completion
Sep 15, 2026
Sector base rates · reference data
historical record · not prediction

of 3 historical Phase 3 readouts in Neurology: 2 positive, 0 mixed, 1 negative.

Positive
2/ 3
67%
Mixed
0/ 3
0%
Negative
1/ 3
33%
positive rate 67% · primary endpoint hit rate 67%
Reference data · comparable readouts

How Ph3 readouts in Neurology have landed.

Reference, not prediction. We surface the historical record so you can read it yourself. We never extrapolate to the upcoming event.

Positive
2/3
67% in record
Primary endpoint hit
67%
across 3 readouts
Drug · sponsorPhase · yearOutcomeKey metricSource
donanemab
LLY · Early Alzheimer's
Ph3 · May 2023positive35% slowing iADRSPR
gantenerumab
RHHBY · Early Alzheimer's
Ph3 · Nov 2022negativefailed primary CDR-SBPR
lecanemab
BIIB · Early Alzheimer's
Ph3 · Sep 2022positive27% slowing CDR-SB at 18 moPR
sorted by phase match, then recency · sources span PR wires, CT.gov, FDA notices, and conference presentations · we never editorialize the outcome label

Competitive landscape

2 peers in Neurology · ranked by indication + modality match
DrugCompanyModalityMechanismPhaseNext catalyst
AUVELITYdextromethorphan-bupropionAXSMsmall moleculeNMDA antagonist + sigma-1 agonistREADOUT · May 26
LEQEMBIlecanemabBIIBmAbhumanized anti-amyloid beta protofibril mAbCMC · Jul 26

Prior SAGE reactions to Readout events

1 historical event · base rate, not prediction
Median 1W move
-18.8%
Median 1M move
-29.6%
Positive outcomes
0/ 1
0%
Negative outcomes
1/ 1
100%
DateHeadlineOutcome1W1M6M
Mar 2024ZURZUVAE — Phase 3 Topline — Mixed Resultnegative-18.8%-29.6%-16.2%

Historical SAGE stock reaction to past Readout catalysts. Past performance is not a forecast — base rates anchor expectations, not outcomes. Positive rate 0%.

Disclosure trail

1 observation · sorted by confidence
  1. Apr 30, 2026·4h agopinned · highest confidence
    MED confPR
    top claim
    Q1'27
    QTR
    Topline results from the CORAL Phase 3 trial are expected in the first quarter of 2027.
    conf 84%via llm

MethodologyEvery catalyst date is anchored to a primary source. Disclosures with confidence ≥ 0.85 auto-publish; the rest are reviewed by a human within 24 hours. We never interpret data — we organize public information.

Disclaimer·BioSight aggregates publicly available data (SEC EDGAR, ClinicalTrials.gov, FDA, company press releases) and is provided as is for informational purposes only. Nothing here is investment, financial, legal, tax, or medical advice, or an offer to buy or sell any security. We make no warranty as to accuracy, completeness, or timeliness; dates and filings may contain errors or be superseded without notice; past events do not predict future outcomes. To the maximum extent permitted by law, BioSight, its operators, contributors, and affiliates disclaim all liability for any loss or damage arising from use of or reliance on this site. You are solely responsible for your own investment decisions — consult a licensed professional before acting on any information.

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