All therapiesEvidence snapshot 2026-11-10
Research program

COMP360

Psilocybin for treatment-resistant depression: trials and the U.S. application.

At a glance

Selected evidence in this atlas
Studied use & population

Psilocybin for treatment-resistant depression: trials and the U.S. application.

Study context
Approval & development

Compass announced completion of the COMP360 NDA for treatment-resistant depression on November 9, 2026. FDA filing acceptance and a product-specific decision date await confirmation. U.S. access remains dependent on approval, DEA scheduling and commercial launch.

Status source · 2026-11-10Status & indications
Selected efficacy evidence

COMP005 reports a 3.6-point advantage over placebo on the MADRS depression scale at six weeks. These are preliminary sponsor-reported results.

23 Jun 2025 · phase 3 topline; sponsor SEC filing

Evidence & limitations
Important safety context

Study-specific safety is not summarized in this timeline entry. See the research notes and primary source; missing safety data do not establish safety.

Safety context
Next milestone

H1 2027 · Possible U.S. launch

conditional sponsor launch target; not promised availability

Milestone details

Study results apply to their own population, dose and analysis. They do not establish a ranking between therapies.

Evidence in the atlas

0 results

Each result belongs to its own study population, dose and analysis. Open a result for its chart, comparator, safety findings and limitations.

phase 3 topline; sponsor SEC filing · 23 Jun 2025

First phase 3 endpoint is met

COMP005 reports a 3.6-point advantage over placebo on the MADRS depression scale at six weeks. These are preliminary sponsor-reported results.

Between-group difference in score change: -3.6 points; 95% CI -5.7 to -1.5. Lower MADRS scores indicate fewer symptoms. Do not interpret 3.6 as a percentage or individual expected benefit.

Safety context

Study-specific safety is not summarized in this timeline entry. See the research notes and primary source; missing safety data do not establish safety.

Research notes

Detailed trial charts have not been added for this program. See its sourced development timeline and research notes.

Biology & identity

Current status: Compass announced completion of the COMP360 NDA for treatment-resistant depression on November 9, 2026. FDA filing acceptance and a product-specific decision date await confirmation. U.S. access remains dependent on approval, DEA scheduling and commercial launch. Source

Psilocybin is the active molecule in the sponsor’s proprietary COMP360 formulation.

Uses, doses and availability depend on the formulation, indication and country. Study doses below describe research; they are not prescribing instructions.

The molecule

2D chemical structure

Psilocybin · active molecule in COMP360

Psilocybin is the active molecule in the sponsor’s proprietary COMP360 formulation.

Shown: Psilocybin active molecule only

This diagram represents psilocybin. It does not depict COMP360’s proprietary formulation, excipients, crystal polymorph, or manufacturing process.

PubChem, National Library of Medicine

PubChem CID 10624

Development timeline

Next milestone

H1 2027 · Possible U.S. launch

conditional sponsor launch target; not promised availability

Compass reiterates a possible first-half 2027 U.S. launch, conditional on FDA approval and scheduling. Submission completion establishes no guaranteed approval or availability date.

Compass Pathways Announces Second Quarter and First Half 2026 Financial Results and Business Highlights · Compass completes the COMP360 psilocybin NDA for treatment-resistant depression

Investigational in the U.S. Compass announced completion of its rolling COMP360 NDA on November 9. FDA acceptance, an action date, approval and access remain separate milestones with no verified product-specific decision date. Short-term symptom improvement is not permanent remission. Noticeable psychoactive effects can reveal treatment assignment and influence expectations; durability, retreatment and safety need their own evidence.

Explore the interactive COMP360 timeline
  1. A randomized signal of benefit

    A phase 2 trial in treatment-resistant depression finds a greater reduction in depression scores at three weeks in the higher-dose group than the low-dose comparator. Adverse effects also occur.

    actual online publication; print issue November 3 · peer-reviewed randomized phase 2 trial Source
  2. First phase 3 endpoint is met

    COMP005 reports a 3.6-point advantage over placebo on the MADRS depression scale at six weeks. These are preliminary sponsor-reported results.

    actual sponsor disclosure · phase 3 topline; sponsor SEC filing Source
  3. A second pivotal trial reports benefit

    COMP006 reports a 3.8-point MADRS advantage over its low-dose comparator at six weeks. Its treatment schedule differs from COMP005.

    actual sponsor disclosure · phase 3 topline; sponsor SEC filing Source
  4. The application is underway

    Compass says some rolling NDA modules are submitted and reports six-month benefit in a subset. Selection of responders and retreatment matter when judging durability.

    actual sponsor status disclosure · sponsor development update Source
  5. One-year follow-up includes repeat doses

    COMP005 Part C follows selected participants through week 52, allowing additional COMP360 doses. The result is not randomized evidence that one dose lasts a year.

    actual sponsor disclosure · sponsor open-label extension topline Source
  6. Compass narrows its final COMP360 submission window to the next two weeks

    At its November 3 announcement, Compass forecast the final rolling NDA within two weeks. The November 9 completion announcement is recorded separately below.

    Actual announcement date; underlying clearance, filing or first-dose date is not established. · sponsor development/timing disclosure Source
  7. The rolling application is complete

    Compass announces final submission of the COMP360 NDA for treatment-resistant depression, fulfilling its earlier forecast. FDA acceptance, an action date and approval remain unverified.

    Actual sponsor announcement of completed submission. · sponsor-reported completed regulatory submission Source
  8. Possible U.S. launch

    Compass reiterates a possible first-half 2027 U.S. launch, conditional on FDA approval and scheduling. Submission completion establishes no guaranteed approval or availability date.

    conditional sponsor launch target; not promised availability · planned commercial milestone Source Source