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Trial details imported from ClinicalTrials.gov

For full trial details, please see the original record at https://clinicaltrials.gov/ct2/show/NCT04241068




Registration number
NCT04241068
Ethics application status
Date submitted
22/01/2020
Date registered
27/01/2020
Date last updated
4/04/2024

Titles & IDs
Public title
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
Scientific title
Phase 3b Open-Label, Multicenter, Safety Study of BIIB037 (Aducanumab) in Subjects With Alzheimer's Disease Who Had Previously Participated in the Aducanumab Studies 221AD103, 221AD301, 221AD302 and 221AD205
Secondary ID [1] 0 0
2019-004368-22
Secondary ID [2] 0 0
221AD304
Universal Trial Number (UTN)
Trial acronym
Linked study record

Health condition
Health condition(s) or problem(s) studied:
Alzheimer's Disease 0 0
Condition category
Condition code
Neurological 0 0 0 0
Alzheimer's disease
Neurological 0 0 0 0
Dementias

Intervention/exposure
Study type
Interventional
Description of intervention(s) / exposure
Treatment: Drugs - Aducanumab

Experimental: Aducanumab - Participants will be administered aducanumab 10 milligrams per kilogram (mg/kg) by intravenous (IV) infusions every four weeks (Q4W) for a duration of 100 weeks during the Core Treatment Period. Eligible participants will continue to receive aducanumab 10 mg/kg IV infusion, Q4W, for 52 weeks during the Long-Term Extension (LTE) Treatment Period.


Treatment: Drugs: Aducanumab
Administered as specified in the treatment arm.
Intervention code [1] 0 0
Treatment: Drugs
Comparator / control treatment
Control group

Outcomes
Primary outcome [1] 0 0
Core Treatment Period: Number of Participants with Adverse Events (AEs) and Serious Adverse Events (SAEs)
Timepoint [1] 0 0
Up to Week 100
Primary outcome [2] 0 0
Core Treatment Period: Number of Participants with AEs Leading to Treatment Discontinuation or Study Withdrawal
Timepoint [2] 0 0
Up to Week 100
Primary outcome [3] 0 0
Core Treatment Period: Number of Participants with Amyloid-related Imaging Abnormality-Edema (ARIA-E)
Timepoint [3] 0 0
Up to Week 100
Primary outcome [4] 0 0
Core Treatment Period: Number of Participants with Amyloid-related Imaging Abnormality- Hemorrhage or Superficial Siderosis (ARIA-H)
Timepoint [4] 0 0
Up to Week 100
Primary outcome [5] 0 0
Core Treatment Period: Number of Participants With Antidrug Antibodies (ADAs) in Serum
Timepoint [5] 0 0
Up to Week 100

Eligibility
Key inclusion criteria
Key

Core Treatment Period:

- Participant was participating in an aducanumab clinical study at the time of the
announcement of early termination (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.

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.

Key
Minimum age
50 Years
Maximum age
90 Years
Sex
Both males and females
Can healthy volunteers participate?
No
Key exclusion criteria
Core Treatment Period:

- Any medical or neurological condition (other than Alzheimer's Disease) that might be a
contributing cause of the participant'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 of 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).

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
Purpose of the study
Treatment
Allocation to intervention
N/A
Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
Methods used to generate the sequence in which subjects will be randomised (sequence generation)
Masking / blinding
Open (masking not used)
Who is / are masked / blinded?



Intervention assignment
Single group
Other design features
Phase
Phase 3
Type of endpoint/s
Statistical methods / analysis

Recruitment
Recruitment status
Active, not recruiting
Data analysis
Reason for early stopping/withdrawal
Other reasons
Date of first participant enrolment
Anticipated
Actual
2/03/2020
Date of last participant enrolment
Anticipated
Actual
Date of last data collection
Anticipated
28/08/2024
Actual
Sample size
Target
Accrual to date
Final
1696
Recruitment in Australia
Recruitment state(s)
NSW,VIC,WA
Recruitment hospital [1] 0 0
The Prince Charles Hospital - Chermside
Recruitment hospital [2] 0 0
St Vincent's Hospital Sydney - Darlinghurst
Recruitment hospital [3] 0 0
Central Coast Neurosciences Research (Erina) - Erina
Recruitment hospital [4] 0 0
KaRa Institute of Neurological Diseases - Macquarie Park
Recruitment hospital [5] 0 0
Box Hill Hospital - Box Hill
Recruitment hospital [6] 0 0
Austin Health - Heidelberg West
Recruitment hospital [7] 0 0
Royal Melbourne Hospital - Parkville
Recruitment hospital [8] 0 0
Australian Alzheimer's Research Foundation - Nedlands
Recruitment postcode(s) [1] 0 0
4032 - Chermside
Recruitment postcode(s) [2] 0 0
2010 - Darlinghurst
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2250 - Erina
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2113 - Macquarie Park
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3128 - Box Hill
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3081 - Heidelberg West
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3050 - Parkville
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6009 - Nedlands
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Funding & Sponsors
Primary sponsor type
Commercial sector/Industry
Name
Biogen
Address
Country

Ethics approval
Ethics application status

Summary
Brief summary
The primary objective is to evaluate the safety and tolerability of aducanumab over 100 weeks
of treatment after a wash-out period imposed by discontinuation of feeder studies in
participants who had previously received aducanumab (i.e. previously treated participants) or
who had previously received placebo (i.e. treatment-naïve participants).
Trial website
https://clinicaltrials.gov/ct2/show/NCT04241068
Trial related presentations / publications
Public notes

Contacts
Principal investigator
Name 0 0
Medical Director
Address 0 0
Biogen
Country 0 0
Phone 0 0
Fax 0 0
Email 0 0
Contact person for public queries
Name 0 0
Address 0 0
Country 0 0
Phone 0 0
Fax 0 0
Email 0 0
Contact person for scientific queries