Skip to content

A Phase 2a, Randomized, Placebo-controlled, Dose-Ranging Study to Evaluate the Safety and Efficacy of PTC518 in Subjects with Huntington’s Disease

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
EU CTIS
Registry ID
CTIS2023-509835-26-00
Acronym
PTC518-CNS-002-HD
Enrollment
121
Registered
2024-05-06
Start date
2022-07-06
Completion date
2025-05-23
Last updated
2025-06-20

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

Conditions

Huntington’s Disease

Brief summary

Safety Endpoints: Safety profile as characterized by treatment-emergent adverse events (TEAEs), laboratory abnormalities, [CCI], electrocardiogram (ECG), vital signs, [CCI], [CCI], Columbia Suicide Severity Rating Scale (C SSRS), and physical examination, Primary Efficacy Endpoint: Change from Baseline in blood tHTT protein at Month 3

Detailed description

Change from Baseline in caudate volume as assessed via vMRI at Month 12 (key secondary), Change from Baseline in cUHDRS scores at Month 12, Change from Baseline in blood tHTT protein at Month 12, Change from Baseline in CSF mHTT protein at Month 12, Change from Baseline in blood mHTT protein at Month 12

Interventions

DRUGPlacebo to match 5-mg PTC518 tablets
DRUGPlacebo to match 20-mg PTC518 tablets
DRUGPTC518

Sponsors

PTC Therapeutics Inc.
Lead SponsorINDUSTRY

Eligibility

Sex/Gender
All
Age
18 Years to No maximum

Design outcomes

Primary

MeasureTime frame
Safety Endpoints: Safety profile as characterized by treatment-emergent adverse events (TEAEs), laboratory abnormalities, [CCI], electrocardiogram (ECG), vital signs, [CCI], [CCI], Columbia Suicide Severity Rating Scale (C SSRS), and physical examination, Primary Efficacy Endpoint: Change from Baseline in blood tHTT protein at Month 3

Secondary

MeasureTime frame
Change from Baseline in caudate volume as assessed via vMRI at Month 12 (key secondary), Change from Baseline in cUHDRS scores at Month 12, Change from Baseline in blood tHTT protein at Month 12, Change from Baseline in CSF mHTT protein at Month 12, Change from Baseline in blood mHTT protein at Month 12

Countries

Austria, France, Germany, Italy, Netherlands, Spain

Outcome results

None listed

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