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A Study to Investigate the Safety, Tolerability, Pharmacokinetics (PK) and Pharmacodynamics (PD) of RO7248824 in Participants With Angelman Syndrome (AS)

NCT04428281 · Status: COMPLETED · Phase: PHASE1 · Type: INTERVENTIONAL · Enrollment: 74

Last updated 2025-08-24

No results posted yet for this study

Summary

This is a phase I, multicenter, non-randomized, adaptive, open-label, multiple ascending, intra-participant, dose-escalation study with a long-term extension (LTE) part and an optional open-label extension (OOE) part. The objective of the study is to investigate the safety, tolerability, PK and PD of RO7248824 administered intrathecally (IT) in participants with AS. Two linked sets of dose escalation cohorts are planned based on two different age groups, namely participants with AS aged ≥ 5 to ≤ 12 years in cohorts A1 to A5 (with at least 2 participants ≤ 8 years old in each cohort) and AS participants aged ≥ 1 to ≤ 4 years in cohorts B1 to B5. The two sets of cohorts will be run in parallel, with each cohort A1 to A5 preceding and gating the linked cohort B1 to B5 (e.g., A1 precedes B1).

Conditions

Interventions

DRUG

RO7248824

In the MAD part, RO7248824 will be administered as IT injection of varing dose levels over a period of 8 weeks, with a minimum of approximately 4 weeks between each dose administration. In the LTE part, RO7248824 will be administered as IT injection of varying dose levels over a period of 144 weeks, with a minimum of approximately 16 weeks between each dose administration. In the OOE part, participants will receive RO7248824 as an IT injection with the same dosing regime as the LTE part over a period of up to 48 weeks.

Sponsors & Collaborators

Principal Investigators

  • Clinical Trials · Hoffmann-La Roche

Study Design

Allocation
NON_RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Model
PARALLEL

Eligibility

Min Age
1 Year
Max Age
12 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2020-08-19
Primary Completion
2025-07-31
Completion
2025-07-31
FDA Drug
Yes

Countries

  • United States
  • Italy
  • Netherlands
  • Spain

Study Locations

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Entities

Diseases
Companies

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT04428281 on ClinicalTrials.gov