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NCT01224106

A Study of Gantenerumab in Participants With Prodromal Alzheimer's Disease

Last Updated: 2021-12-13

Study Results

Results available

Outcome measurements, participant flow, baseline characteristics, and adverse events have been published for this study.

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Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

PHASE3

Total Enrollment

799 participants

Study Classification

INTERVENTIONAL

Study Start Date

2010-11-30

Study Completion Date

2020-09-10

Brief Summary

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This multi-center, randomized, double-blind, placebo-controlled parallel-group study will evaluate the effect of gantenerumab (RO4909832) on cognition and functioning and the safety and pharmacokinetics in participants with prodromal Alzheimer's Disease. Participants will be randomized to receive subcutaneous (SC) injections of either gantenerumab or placebo. Participants who consent to be part of the sub study will undergo positron emission tomography (PET) scanning to assess brain amyloid. The anticipated time on study treatment is 104 weeks in Part 1, with an option for an additional up to 2 years of treatment in Part 2, followed by an open-label extension (Part 3) until July 2020.

The dosing for Parts 1 and 2 was stopped after a planned futility interim analysis showed a low probability of meeting the primary outcome measure with the doses studied. The study has converted to open-label to investigate higher gantenerumab doses.

Detailed Description

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Conditions

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Alzheimer's Disease

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

DOUBLE

Participants Investigators

Study Groups

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Placebo (Parts 1 and 2)

Participants with Alzheimer's disease received Placebo by SC injection every 4 weeks (Q4W) for 104 weeks or approximately 2 years during Part 1 of the study. Participants who completed the Week 104 visit were given an option to continue the treatment received during Part 1, for 2 additional years in Part 2.

Group Type PLACEBO_COMPARATOR

Placebo

Intervention Type DRUG

Participants received Placebo SC injection Q4W.

Gantenerumab 105 mg (Parts 1 and 2)

Participants with Alzheimer's disease received Gantenerumab 105 mg by SC injection every 4 weeks (Q4W) for 104 weeks or approximately 2 years during Part 1 of the study. Participants who completed the Week 104 visit were given an option to continue the treatment received during Part 1, for 2 additional years in Part 2.

Group Type EXPERIMENTAL