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A Phase IB/IIA, Randomized, Double-Blind, Placebo-Controlled, Multiple-Ascending Dose, Parallel-Group Study to Investigate the Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of RO7126209 following Intravenous Infusion in Patients with Prodromal or Mild To Moderate Alzheimer’s Disease

Status
Recruiting
Phases
Phase 1Phase 2
Study type
Interventional
Source
EU CTIS
Registry ID
CTIS2023-509678-52-00
Acronym
BP42155
Enrollment
99
Registered
2024-03-05
Start date
2024-06-27
Completion date
Unknown
Last updated
2026-01-09

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

Conditions

Alzheimer's disease

Brief summary

1. Nature, frequency, severity, and timing of AEs, including – for Part 1 only – DLAEs. Significant assessments reported as AEs include clinical laboratory assessments and vital signs, physical and neurological examination, 12-lead ECG, and brain MRI findings (including the occurrence of vasogenic edema and hemorrhage) (Part 1-4), 2. Change from baseline in brain amyloid load, as measured by amyloid PET scan (Part 3)

Detailed description

1. Change from baseline in brain amyloid load, as measured by amyloid PET scan (Part 1, 2 and 4 only), 2. Plasma Concentration of RO7126209 at specified timepoints, 3. CSF concentration of RO7126209, 4. Incidence and titer of anti-RO7126209 ADAs over time

Interventions

DRUGPlacebo Trontinemab
DRUGFlortaucipir F18

Sponsors

F. Hoffmann-La Roche AG
Lead SponsorINDUSTRY

Eligibility

Sex/Gender
All
Age
18 Years to No maximum

Design outcomes

Primary

MeasureTime frame
1. Nature, frequency, severity, and timing of AEs, including – for Part 1 only – DLAEs. Significant assessments reported as AEs include clinical laboratory assessments and vital signs, physical and neurological examination, 12-lead ECG, and brain MRI findings (including the occurrence of vasogenic edema and hemorrhage) (Part 1-4), 2. Change from baseline in brain amyloid load, as measured by amyloid PET scan (Part 3)

Secondary

MeasureTime frame
1. Change from baseline in brain amyloid load, as measured by amyloid PET scan (Part 1, 2 and 4 only), 2. Plasma Concentration of RO7126209 at specified timepoints, 3. CSF concentration of RO7126209, 4. Incidence and titer of anti-RO7126209 ADAs over time

Countries

Poland, Spain

Outcome results

None listed

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