A Study to Evaluate Safety and Tolerability of Aducanumab in Participants With Alzheimer’s Disease Who Had Previously Participated in the Aducanumab Studies 221AD103, 221AD301, 221AD302 and 221AD205

Phase 1

• Conditions: Alzheimer's Disease; MedDRA version: 20.0Level: LLTClassification code 10001896Term: Alzheimer's diseaseSystem Organ Class: 100000004852; Therapeutic area: Diseases [C] - Nervous System Diseases [C10]

• Registration Number: EUCTR2019-004368-22-DK
• Lead Sponsor: Biogen Idec Research Limited

Brief Summary

Not available

Detailed Description

Not available

Study Timeline

• Study Start: 2020-03-30
• Last Update Posted: 15 April 2024

Recruitment & Eligibility

• Status: ot Recruiting
• Sex: All
• Target Recruitment: 2400

Inclusion Criteria

Core Treatment Period:
- Participant was participating in an aducanumab clinical study at the time of the announcement of early termination (Studies 221AD301, 221AD302, 221AD103 and 221AD205, referred to as feeder studies”).
- Has one care partner who, in the Investigator’s opinion, has adequate contact with the participant as to be able to provide accurate information about the participant’s cognitive and functional abilities.
Other protocol defined Inclusion criteria may apply.

LTE Treatment Period:
- Participant must have completed the Core study period (Week 102) and
adequately tolerated 10 mg/kg of aducanumab during the Core study
period in the opinion of the Investigator.
- Has one informant/care partner who, in the Investigator's opinion, has
frequent and sufficient contact with the participant as to be able to
provide accurate information about the participant's cognitive and
functional abilities.
Note- Other protocol defined Inclusion/Exclusion criteria may apply.

Are the trial subjects under 18? no
Number of subjects for this age range:
F.1.2 Adults (18-64 years) yes
F.1.2.1 Number of subjects for this age range 1600
F.1.3 Elderly (>=65 years) yes
F.1.3.1 Number of subjects for this age range 800

Exclusion Criteria

Core Treatment Period:
- Any medical or neurological condition (other than Alzheimer's Disease) that might be a contributing cause of the subject's cognitive impairment.
-Stroke or any unexplained loss of consciousness within 1 year prior to Screening.
-Clinically significant unstable psychiatric illness in past 6 months.
-History of unstable angina, myocardial infarction, advanced chronic heart failure, or clinically significant conduction abnormalities within 1 year prior to Screening.
- A seizure event that occurred after the last visit stopping the feeder study and before Screening for this study.
- Evidence of impaired liver function as shown by an abnormal liver function profile at Screening.
- History of or known seropositivity for HIV.
- Clinically significant systemic illness or serious infection within 30 days prior to or during Screening.
- Contraindications to having a brain magnetic resonance imaging (MRI).
Other protocol defined Exclusion criteria may apply.

LTE Treatment Period:
- Any medical or psychiatric contraindication or clinically significant
abnormality that, in the opinion of the Investigator, will substantially
increase the risk associated with the participant's enrollment in and
completion of the study.
Note- Other protocol defined Inclusion/Exclusion criteria may apply.

Study & Design

• Study Type: Interventional clinical trial of medicinal product
• Study Design: Not specified