Efficacy and Safety Study of Gantenerumab in Participants With Early Alzheimer's Disease (AD)

This randomized, double-blind, placebo-controlled, parallel-group study will evaluate the efficacy and safety of gantenerumab versus placebo in participants with early (prodromal to mild) AD. All participants must show evidence of beta-amyloid pathology. Eligible participants will be randomized 1:1 to receive either subcutaneous (SC) injection of gantenerumab or placebo. The primary efficacy assessment will be performed at the end of the double blind period at week 104. Participants will then be offered to enter into an open-label extension (OLE). Participants not willing to go to the OLE will participate in a long term follow-up period for up to 50 weeks after the last gantenerumab dose.


Study Type: Interventional  (Clinical Trial)
Estimated Enrollment: 760 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double (Participant, Investigator)
Primary Purpose: Treatment
Official Title: A Phase III, Multicenter, Randomized, Double-Blind, Placebo-Controlled, Parallel-Group, Efficacy, and Safety Study of Gantenerumab in Patients With Early (Prodromal to Mild) Alzheimer's Disease
Actual Study Start Date: June 6, 2018
Estimated Primary Completion Date: May 31, 2022
Estimated Study Completion Date: March 2, 2023

Arm:
- Experimental: Gantenerumab
- Placebo Comparator: Placebo