Purpose

This is an open-label, multicenter, rollover study to evaluate the safety, tolerability, and efficacy of long-term administration of open-label gantenerumab in participants with AD who completed Study WN29922 or WN39658, either the double-blind or open-label extension (OLE) part.

Condition

Eligibility

Eligible Ages
All ages
Eligible Genders
All
Accepts Healthy Volunteers
No

Inclusion Criteria

  • Completed Study WN29922 or WN39658, either its double-blind part or OLE part, and did not discontinue study drug early - The participant should be capable of completing assessments either alone or with the help of the caregiver - Availability of a person (referred to as the "caregiver") - For women of childbearing potential: agreement to remain abstinent (refrain from heterosexual intercourse) or use contraception methods with a failure rate of <1% per year (bilateral tubal ligation, male sterilization, hormonal contraceptives that inhibit ovulation, hormone-releasing intrauterine devices, and copper intrauterine devices) during the treatment period and for at least 16 weeks after the final dose of gantenerumab - Agreement not to donate blood or blood products for transfusion for the duration of the study and for 1 year after final dose of study drug

Exclusion Criteria

  • Pregnant or breastfeeding, or intending to become pregnant during the study or within at least 16 weeks after the final dose of study drug - Prematurely discontinued from Study WN29922 or WN39658 - Any medical condition that may jeopardize the participant's safety if he or she continues to receive study treatment - Received any investigational treatment other than gantenerumab during or since completion of Study WN29922 or WN39658, either its double-blind or OLE part - Evidence of disseminated leptomeningeal hemosiderosis - Evidence of intracerebral macrohemorrhage - Use of prohibited medication - Evidence of ARIA-E on the last MRI scan report in Study WN29922 or WN39658, either its double-blind or OLE part

Study Design

Phase
Phase 3
Study Type
Interventional
Allocation
Non-Randomized
Intervention Model
Single Group Assignment
Primary Purpose
Treatment
Masking
None (Open Label)

Arm Groups

ArmDescriptionAssigned Intervention
Experimental
Group 1
Participants, who completed the double-blind part and did not enter the OLE part of Study WN29922 or WN39658, will be enrolled and receive open-label gantenerumab approximately 2 weeks after the Week 116 visit of Study WN29922 or WN39658. This will be considered the OLE baseline visit (OLE Day 1).
  • Drug: Gantenerumab
    Group 1 participants who were in the active arm in the double blind part in the parent study (WN29922 or WN39658), will continue to receive open-label gantenerumab 510 mg SC, Q2W. Participants who are naive to gantenerumab treatment will be required to undergo the 3 step uptitration scheme before receiving target dose of open label gantenerumab, 510 mg SC, Q2W.
Experimental
Group 2
Participants, who completed the double-blind part and the OLE part of Study WN29922 or WN39658, will be enrolled and receive open-label gantenerumab approximately 2 weeks after the OLE Week 34 visit or the final dose visit in the Study WN29922 or WN39658 OLE.
  • Drug: Gantenerumab
    Group 2 participants who have completed OLE part in the parent study (WN29922 or WN39658), will continue to receive open-label gantenerumab 510 mg SC, Q2W

More Details

Status
Terminated
Sponsor
Hoffmann-La Roche

Study Contact

Detailed Description

Participants who were in the active arm in the double blind part and those who have completed OLE part in the parent study, will continue receive open-label gantenerumab 510 mg sub-cutaneously (SC) every 2 weeks (Q2W). Participants who are naive to gantenerumab treatment will be required to undergo the 3 step uptitration scheme as in the parent study before receiving target dose of open label gantenerumab.

Notice

Study information shown on this site is derived from ClinicalTrials.gov (a public registry operated by the National Institutes of Health). The listing of studies provided is not certain to be all studies for which you might be eligible. Furthermore, study eligibility requirements can be difficult to understand and may change over time, so it is wise to speak with your medical care provider and individual research study teams when making decisions related to participation.