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ION356-CS1: A Phase 1b Study to Evaluate the Safety, Pharmacokinetics, and Pharmacodynamics of Intrathecally Administered ION356 in Patients with Pelizaeus-Merzbacher Disease

Status
Recruiting
Phases
Phase 1
Study type
Interventional
Source
EU CTIS
Registry ID
CTIS2022-502432-39-00
Acronym
ION356-CS1
Enrollment
33
Registered
2023-11-02
Start date
2024-04-10
Completion date
Unknown
Last updated
2025-09-02

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

Conditions

Pelizaeus-Merzbacher Disease

Brief summary

1. Incidence of treatment-emergent adverse events (TEAEs) and serious adverse events (SAEs) from Day 1 to the final study visit over the course of the study • Incidence and frequency of TEAEs and SAEs • Change from Baseline over the course of the study in the following: − Laboratory assessments including clinical chemistry, hematology and coagulation in plasma/serum; urinalysis, and cerebrospinal fluid (CSF) safety panel − Neurological exam and vital signs − ECG − Concomitant medication use

Detailed description

1. ION356 concentrations in plasma and CSF over the course of the study • Maximum plasma concentration (Cmax), area under the concentration-time curve (AUC), elimination half-life (t½), and trough (pre-dose) and post-treatment ION356 concentrations, where appropriate • ION356 trough (pre-dose) and post-treatment concentrations in CSF • ION356 excretion in urine, percent of dose excreted, and renal clearance

Interventions

DRUGION356

Sponsors

Ionis Pharmaceuticals Inc.
Lead SponsorINDUSTRY

Eligibility

Sex/Gender
Male
Age
0 Years to 17 Years

Design outcomes

Primary

MeasureTime frame
1. Incidence of treatment-emergent adverse events (TEAEs) and serious adverse events (SAEs) from Day 1 to the final study visit over the course of the study • Incidence and frequency of TEAEs and SAEs • Change from Baseline over the course of the study in the following: − Laboratory assessments including clinical chemistry, hematology and coagulation in plasma/serum; urinalysis, and cerebrospinal fluid (CSF) safety panel − Neurological exam and vital signs − ECG − Concomitant medication use

Secondary

MeasureTime frame
1. ION356 concentrations in plasma and CSF over the course of the study • Maximum plasma concentration (Cmax), area under the concentration-time curve (AUC), elimination half-life (t½), and trough (pre-dose) and post-treatment ION356 concentrations, where appropriate • ION356 trough (pre-dose) and post-treatment concentrations in CSF • ION356 excretion in urine, percent of dose excreted, and renal clearance

Countries

France, Germany, Netherlands

Outcome results

None listed

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