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Trial details imported from ClinicalTrials.gov
For full trial details, please see the original record at
https://clinicaltrials.gov/study/NCT03887455
Registration number
NCT03887455
Ethics application status
Date submitted
21/03/2019
Date registered
25/03/2019
Titles & IDs
Public title
A Study to Confirm Safety and Efficacy of Lecanemab in Participants With Early Alzheimer's Disease
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Scientific title
A Placebo-Controlled, Double-Blind, Parallel-Group, 18-Month Study With an Open-Label Extension Phase to Confirm Safety and Efficacy of BAN2401 in Subjects With Early Alzheimer's Disease
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Secondary ID [1]
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2018-004739-58
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Secondary ID [2]
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BAN2401-G000-301
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Universal Trial Number (UTN)
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Trial acronym
Clarity AD
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Linked study record
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Health condition
Health condition(s) or problem(s) studied:
Early Alzheimer's Disease
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Condition category
Condition code
Neurological
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Alzheimer's disease
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Neurological
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Dementias
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Intervention/exposure
Study type
Interventional
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Description of intervention(s) / exposure
Treatment: Drugs - Lecanemab
Treatment: Drugs - Placebo
Treatment: Drugs - Lecanemab
Treatment: Drugs - Lecanemab
Experimental: Core Study: Lecanemab 10 mg/kg biweekly -
Placebo comparator: Core Study: Placebo -
Experimental: Extension Phase: Lecanemab 10 mg/kg biweekly -
Experimental: Extension Phase: Lecanemab 720 mg Subcutaneous Injection Weekly - This will include approximately 40 de novo participants (those that did not participate in the core study) with early Alzheimer disease (AD).
Experimental: Extension Phase: Lecanemab 360 mg Subcutaneous Autoinjector Injection Weekly -
Treatment: Drugs: Lecanemab
10 milligram per kilogram (mg/kg) biweekly (once every 2 weeks) administered as i.v. infusion.
Treatment: Drugs: Placebo
Biweekly (once every 2 weeks) administered as i.v. infusion.
Treatment: Drugs: Lecanemab
720 milligram (mg) weekly administered as subcutaneous injection.
Treatment: Drugs: Lecanemab
360 mg weekly administered as subcutaneous injection.
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Intervention code [1]
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Treatment: Drugs
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Comparator / control treatment
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Control group
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Outcomes
Primary outcome [1]
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Core Study: Change from Baseline in the CDR-SB at 18 Months
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Assessment method [1]
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Timepoint [1]
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Baseline, 18 months
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Primary outcome [2]
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Extension Phase: Number of Participants Reporting One or More Treatment-emergent Adverse Events (TEAEs)
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Assessment method [2]
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A TEAE is defined as an adverse event that emerges during treatment or within 30 days of the last dose of study drug, having been absent at pretreatment (Baseline) or reemerges during treatment, having been present at pretreatment (Baseline) but stopped before treatment, or worsens in severity during treatment relative to the pretreatment state, when the adverse event was continuous. Number of participants with TEAEs (serious and non-serious adverse events) were reported based on their regular measurement of vital signs, safety assessments of laboratory tests, antidrug antibody assessments, suicidality assessments, magnetic resonance imaging and electrocardiogram parameter values.
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Timepoint [2]
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From first dose of study drug up to approximately 51 months (including 3 months follow up) for the extension phase
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Primary outcome [3]
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Extension Phase: Change from Core Study Baseline in CDR-SB
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Assessment method [3]
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Timepoint [3]
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Baseline up to Month 69
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Secondary outcome [1]
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Core Phase: Change From Baseline in Amyloid Positron Emission Tomography (PET) Using Centiloids at 18 Months
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Assessment method [1]
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Timepoint [1]
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Baseline, 18 months
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Secondary outcome [2]
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Core Study: Change from Baseline in Alzheimer Disease Assessment Scale - Cognitive Subscale 14 (ADAS-cog14) at 18 Months
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Assessment method [2]
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Timepoint [2]
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Baseline, 18 months
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Secondary outcome [3]
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Core Phase: Change From Baseline in Alzheimer's Disease Composite Score (ADCOMS) at 18 Months
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Assessment method [3]
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Timepoint [3]
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Baseline, 18 months
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Secondary outcome [4]
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Core Study: Change From Baseline in Alzheimer's Disease Cooperative Study-Activities of Daily Living Scale for Mild Cognitive Impairment (ADCS MCI-ADL) at 18 Months
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Assessment method [4]
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Timepoint [4]
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Baseline, 18 months
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Eligibility
Key inclusion criteria
Core Study: Inclusion Criteria
Diagnosis: Mild Cognitive Impairment (MCI) due to Alzheimer's disease - intermediate likelihood:
* Meet the National Institute of Aging - Alzheimer's Association (NIA-AA) core clinical criteria for MCI due to Alzheimer's disease - intermediate likelihood
* Have a global Clinical Dementia Rating (CDR) score of 0.5 and CDR Memory Box score of 0.5 or greater at Screening and Baseline
* Report a history of subjective memory decline with gradual onset and slow progression over the last 1 year before Screening; must be corroborated by an informant
Mild Alzheimer's disease dementia:
* Meet the NIA-AA core clinical criteria for probable Alzheimer's disease dementia
* Have a global CDR score of 0.5 to 1.0 and a CDR Memory Box score of 0.5 or greater at Screening and Baseline
Key Inclusion Criteria that must be met by all participants:
* Objective impairment in episodic memory as indicated by at least 1 standard deviation below age-adjusted mean in the Wechsler Memory Scale IV-Logical Memory (subscale) II (WMS-IV LMII)
* Positive biomarker for brain amyloid pathology
* Male or female participants aged greater than or equal to (>=) 50 and less than or equal to (<=) 90 years, at the time of informed consent
* Mini mental state examination (MMSE) score >=22 at Screening and Baseline and <=30 at Screening and Baseline
* Body mass index (BMI) greater than (>)17 and less than (<) 35 at Screening
* If receiving an approved Alzheimer's disease treatment such as acetylcholinesterase inhibitor (AChEIs) or memantine or both for Alzheimer's disease, must be on a stable dose for at least 12 weeks prior to Baseline. Treatment-naive participants for Alzheimer's disease can be entered into the study. Unless otherwise stated, participants must have been on stable doses of all other (that is, non-Alzheimer's disease-related) permitted concomitant medications for at least 4 weeks prior to Baseline. Use of memantine will not be allowed for participants in Japan
* Have an identified study partner (defined as a person able to support the participant for the duration of the study and who spends at least 8 hours per week with the participant)
* Provide written informed consent. If a participant lacks capacity to consent in the investigator's opinion, the participant's assent should be obtained, if required in accordance with local laws, regulations and customs, plus the written informed consent of a legal representative should be obtained (capacity to consent and definition of legal representative should be determined in accordance with applicable local laws and regulations). In countries where local laws, regulations, and customs do not permit participants who lack capacity to consent to participate in this study (example, Germany and Spain), they will not be enrolled
Extension Phase:
* Participants who have completed the Core Study (except de novo participants)
* Must continue to have a study partner who is willing and able to provide follow-up information on the participant throughout the course of the Extension Phase
* Provide written informed consent for the Extension Phase. If a participant lacks capacity to consent in the investigator's opinion, the participant's assent should be obtained, if required and in accordance with local laws, regulations and customs, plus the written informed consent of a legal representative should be obtained (capacity to consent and definition of legal representative should be determined in accordance with applicable local laws and regulations). In countries where local laws, regulations, and customs do not permit participants who lack capacity to consent to participate in this study (example, Germany and Spain), they will not be enrolled
* Participants entering the subcutaneous (vial) substudy at Extension Phase Week 1, must be willing to participate, or continue participating in the amyloid positron emission tomography (PET) substudy. All participants must have an amyloid PET scan within 4 weeks before starting subcutaneous BAN2401
* Participants enrolling into the subcutaneous autoinjector substudy must have had at least 6 months exposure to BAN2401 10 mg/kg intravenously biweekly or BAN2401 720 mg subcutaneously weekly.
* Participants enrolling into the subcutaneous 360 mg autoinjector substudy must have previously received BAN2401 by either intravenous administration and/or subcutaneous autoinjector administration and must have completed Visit 82 (Extension Week 79) at a minimum, regardless of previous route of administration
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Minimum age
50
Years
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Maximum age
90
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Sex
Both males and females
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Can healthy volunteers participate?
No
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Key exclusion criteria
Exclusion Criteria
* Any neurological condition that may be contributing to cognitive impairment above and beyond that caused by the participant's Alzheimer's disease
* History of transient ischemic attacks (TIA), stroke, or seizures within 12 months of Screening
* Any psychiatric diagnosis or symptoms (example, hallucinations, major depression, or delusions) that could interfere with study procedures in the participant
* Geriatric Depression Scale (GDS) score >=8 at Screening
* Contraindications to MRI scanning, including cardiac pacemaker/defibrillator, ferromagnetic metal implants (example in skull and cardiac devices other than those approved as safe for use in MRI scanners)
* Evidence of other clinically significant lesions on brain MRI at Screening that could indicate a dementia diagnosis other than Alzheimer's disease
* Other significant pathological findings on brain MRI at screening, including but not limited to: more than 4 microhemorrhages (defined as 10 millimeter [mm] or less at the greatest diameter); a single macrohemorrhage >10 mm at greatest diameter; an area of superficial siderosis; evidence of vasogenic edema; evidence of cerebral contusion, encephalomalacia, aneurysms, vascular malformations, or infective lesions; evidence of multiple lacunar infarcts or stroke involving a major vascular territory, severe small vessel, or white matter disease; space occupying lesions; or brain tumors (however, lesions diagnosed as meningiomas or arachnoid cysts and <1 centimeter [cm] at their greatest diameter need not be exclusionary)
* Any immunological disease which is not adequately controlled, or which requires treatment with immunoglobulins, systemic monoclonal antibodies (or derivatives of monoclonal antibodies), systemic immunosuppressants, or plasmapheresis during the study
* Participants with a bleeding disorder that is not under adequate control (including a platelet count <50,000 or international normalized ratio [INR] >1.5 for participants who are not on anticoagulant treatment, example, warfarin). Participants who are on anticoagulant therapy should have their anticoagulant status optimized and be on a stable dose for 4 weeks before Screening. Participants who are on anticoagulant therapy are not permitted to participate in cerebrospinal fluid (CSF) assessments
* Any other medical conditions (example, cardiac, respiratory, gastrointestinal, renal disease) which are not stably and adequately controlled, or which in the opinion of the investigator(s) could affect the participant's safety or interfere with the study assessments
* Participation in a clinical study involving any therapeutic monoclonal antibody, protein derived from a monoclonal antibody, immunoglobulin therapy, or vaccine within 6 months before screening unless it can be documented that the participant was randomized to placebo
* Participation in a clinical study involving any anti-amyloid therapies (including any monoclonal antibody therapies and any ß-site amyloid precursor protein cleaving enzyme [BACE] inhibitor therapies) unless it can be documented that the participant only received placebo
* Participants who have any known prior exposure to lecanemab
* Participants who were dosed in a clinical study involving any new chemical entities for AD within 6 months prior to screening unless it can be documented that the participant was in a placebo treatment arm
Extension Phase: Exclusion Criteria
* Participants who discontinued early from the Core Study
* Participants who develop the following conditions from the time of Screening for the Core Study to the start of the Extension Phase
* Any neurological condition that may be contributing to cognitive impairment above and beyond that caused by the participant's AD
* Any psychiatric diagnosis or symptoms, (example, hallucinations, major depression, or delusions) that could interfere with study procedures in the participant
* Contraindications to MRI scanning, including cardiac pacemaker/defibrillator, ferromagnetic metal implants (example, in skull and cardiac devices other than those approved as safe for use in MRI scanners)
* Other significant pathological findings on brain MRI during the Core Study including but not limited to: cerebral contusion, encephalomalacia, aneurysms, vascular malformations, or infective lesions; evidence of multiple lacunar infarcts or stroke involving a major vascular territory, severe small vessel, or white matter disease; space occupying lesions; or brain tumors will be exclusionary if based on the opinion of the investigator, with consultation of medical monitor, these findings may interfere with the study procedures or safety
* Hypersensitivity to BAN2401 or any of the excipients, or to any monoclonal antibody treatment
* Any immunological disease which is not adequately controlled, or which requires chronic treatment with immunoglobulins, systemic monoclonal antibodies (or derivatives of monoclonal antibodies), systemic immunosuppressants, or plasmapheresis during the study
* Any other clinically significant abnormalities in physical examination, vital signs, laboratory tests, or ECG, which in the opinion of the investigator require further investigation or treatment or which may interfere with study procedures or safety
* Malignant neoplasms (except for basal or squamous cell carcinoma in situ of the skin, or localized prostate cancer in male participants) that are not stably and adequately controlled or which, based on the opinion of the investigator, may interfere with the participant's safety or participation in the study
* Any other medical conditions (example, cardiac, respiratory, gastrointestinal, renal disease) which are not stably and adequately controlled, or which in the opinion of the investigator(s) could affect the participant's safety or interfere with the study assessments
* Severe visual or hearing impairment that would prevent the participant from performing psychometric tests accurately
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Study design
Purpose of the study
Treatment
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Allocation to intervention
Randomised controlled trial
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Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
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Methods used to generate the sequence in which subjects will be randomised (sequence generation)
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Masking / blinding
Blinded (masking used)
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Who is / are masked / blinded?
The people receiving the treatment/s
The people administering the treatment/s
The people assessing the outcomes
The people analysing the results/data
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Intervention assignment
Parallel
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Other design features
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Phase
Phase 3
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Type of endpoint/s
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Statistical methods / analysis
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Recruitment
Recruitment status
Active, not recruiting
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Data analysis
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Reason for early stopping/withdrawal
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Other reasons
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Date of first participant enrolment
Anticipated
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Actual
27/03/2019
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Date of last participant enrolment
Anticipated
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Actual
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Date of last data collection
Anticipated
15/09/2027
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Actual
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Sample size
Target
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Accrual to date
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Final
1906
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Recruitment in Australia
Recruitment state(s)
NSW,QLD,SA,VIC,WA
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Recruitment hospital [1]
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St Vincent's Hospital - Translational Research Centre - Darlinghurst
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KaRa Institute of Neurological Diseases - Macquarie Park
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Recruitment hospital [3]
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The Prince Charles Hospital/Internal Medicine & Dementia Research Unit - Chermside Brisbane
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Central Adelaide Local Health Network, The Queen Elizabeth Hospital and the Royal Adelaide Hospital - Woodville South, Adelaid
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Austin Health - Medical and Cognitive Research Unit - Ivanhoe
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HammondCare Malvern Clinical Trials Unit - Malvern
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Recruitment hospital [7]
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Australian Alzheimer's Research Foundation - Nedlands
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Recruitment postcode(s) [1]
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2010 - Darlinghurst
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2229 - Macquarie Park
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4032 - Chermside Brisbane
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5011 - Woodville South, Adelaid
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3081 - Ivanhoe
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3144 - Malvern
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6009 - Nedlands
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Recruitment outside Australia
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Kanagawa
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Japan
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Miyazaki
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Niigata
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Japan
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Okayama
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Japan
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Osaka
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Japan
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Saitama
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Japan
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Shiga
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Japan
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Tokyo
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Japan
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Yamagata
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Japan
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Yamaguchi
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Korea, Republic of
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Gyeonggi-do
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Korea, Republic of
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Jeolla-do
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Korea, Republic of
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Seoul
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Korea, Republic of
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Busan
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Korea, Republic of
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Incheon
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Russian Federation
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Moscow
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Singapore
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Singapore
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Spain
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Barcelona
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Spain
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Bizkaia
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Gipuzkoa
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Guipuzcoa
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Cordoba
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Spain
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Madrid
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Spain
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Salamanca
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Sevilla
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Valencia
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Sweden
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Västra Götalandslän
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Sweden
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Malmö
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Sweden
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Stockholm
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Sweden
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Uppsala
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United Kingdom
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Devon
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United Kingdom
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Hampshire
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United Kingdom
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South Yorkshire
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United Kingdom
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Birmingham
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United Kingdom
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Guildford
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United Kingdom
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London
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Funding & Sponsors
Primary sponsor type
Commercial sector/industry
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Name
Eisai Inc.
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Address
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Other collaborator category [1]
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Commercial sector/industry
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Biogen
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Ethics approval
Ethics application status
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Summary
Brief summary
This study will be conducted to evaluate the efficacy of lecanemab in participants with early Alzheimer's disease (EAD) by determining the superiority of lecanemab compared with placebo on the change from baseline in the Clinical Dementia Rating-Sum of Boxes (CDR-SB) at 18 months of treatment in the Core Study. This study will also evaluate the long-term safety and tolerability of lecanemab in participants with EAD in the Extension Phase and whether the long-term effects of lecanemab as measured by the CDR-SB at the end of the Core Study is maintained over time in the Extension Phase.
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Trial website
https://clinicaltrials.gov/study/NCT03887455
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Public notes
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Contacts
Principal investigator
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Contact person for scientific queries
Data sharing statement
Will individual participant data (IPD) for this trial be available (including data dictionaries)?
Yes
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What data in particular will be shared?
Eisai's data sharing commitment and further information on how to request data can be found on our website http://eisaiclinicaltrials.com/.
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When will data be available (start and end dates)?
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Available to whom?
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Available for what types of analyses?
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How or where can data be obtained?
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What supporting documents are/will be available?
No Supporting Document Provided
Results publications and other study-related documents
No documents have been uploaded by study researchers.
Results not provided in
https://clinicaltrials.gov/study/NCT03887455