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A Phase 2b/3 Study of Safety and Efficacy of AMX0035 in Progressive Supranuclear Palsy (ORION)

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
EU CTIS
Registry ID
CTIS2023-505893-14-00
Acronym
A35-009
Enrollment
269
Registered
2024-03-14
Start date
2024-06-04
Completion date
2025-08-27
Last updated
2025-06-27

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Progressive Supranuclear Palsy

Brief summary

Change from Baseline at Week 52 in the total PSPRS Score * *A primary endpoint—which meets evidentiary requirements of the United States of America (USA) and outside of the USA, respectively—was selected as follows: change from baseline in the 10-item PSPRS at Week 52 (for the USA) and change from baseline in the 28-item PSPRS at Week 52 (for outside of the USA). For each region, only the endpoint which meets evidentiary requirements of that region is considered the primary endpoint; ...

Detailed description

Change from Baseline at Week 52 in the PSPRS Score * * Same as above, Change from Baseline at Week 52 in the MDS-UPDRS Part II Score., Frequency of treatment-emergent adverse events (TEAEs) and serious adverse events (SAEs)

Interventions

DRUGPlacebo matching AMX0035

Sponsors

Amylyx Pharmaceuticals Inc.
Lead SponsorINDUSTRY

Eligibility

Sex/Gender
All
Age
18 Years to No maximum

Design outcomes

Primary

MeasureTime frame
Change from Baseline at Week 52 in the total PSPRS Score * *A primary endpoint—which meets evidentiary requirements of the United States of America (USA) and outside of the USA, respectively—was selected as follows: change from baseline in the 10-item PSPRS at Week 52 (for the USA) and change from baseline in the 28-item PSPRS at Week 52 (for outside of the USA). For each region, only the endpoint which meets evidentiary requirements of that region is considered the primary endpoint; ...

Secondary

MeasureTime frame
Change from Baseline at Week 52 in the PSPRS Score * * Same as above, Change from Baseline at Week 52 in the MDS-UPDRS Part II Score., Frequency of treatment-emergent adverse events (TEAEs) and serious adverse events (SAEs)

Countries

Austria, Belgium, Bulgaria, France, Germany, Italy, Netherlands, Poland, Spain, Sweden

Outcome results

None listed

Source: EU CTIS · Data processed: Feb 4, 2026