E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
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E.1.1.1 | Medical condition in easily understood language |
AD is a progressive disorder that causes problems with memory, thinking and behavior. Symptoms usually develop slowly and get worse over time, becoming severe enough to interfere with daily tasks |
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E.1.1.2 | Therapeutic area | Diseases [C] - Nervous System Diseases [C10] |
MedDRA Classification |
E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 20.0 |
E.1.2 | Level | HLT |
E.1.2 | Classification code | 10001897 |
E.1.2 | Term | Alzheimer's disease (incl subtypes) |
E.1.2 | System Organ Class | 10029205 - Nervous system disorders |
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E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 20.0 |
E.1.2 | Level | PT |
E.1.2 | Classification code | 10074616 |
E.1.2 | Term | Prodromal Alzheimer's disease |
E.1.2 | System Organ Class | 10029205 - Nervous system disorders |
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E.1.3 | Condition being studied is a rare disease | No |
E.2 Objective of the trial |
E.2.1 | Main objective of the trial |
• To evaluate the efficacy of gantenerumab administered by subcutaneous injection compared with placebo, as measured by the Clinical Dementia Rating-Sum of Boxes score |
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E.2.2 | Secondary objectives of the trial |
•To evaluate the efficacy of gantenerumab versus placebo on cognition and function •To evaluate the safety of gantenerumab compared with placebo •To evaluate the effect of gantenerumab compared with placebo on change in brain amyloid and tau load in a subset of participants |
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E.2.3 | Trial contains a sub-study | Yes |
E.2.3.1 | Full title, date and version of each sub-study and their related objectives |
The substudies associated with Study WN39658 will be described in separate protocols, and patients consenting to enroll in these substudies will be asked to sign the associated Informed Consent Forms. |
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E.3 | Principal inclusion criteria |
- Age 50-90 years - Meets National Institute on Aging/Alzheimer's Association (NIAAA) core clinical criteria for probable AD dementia or prodromal AD (consistent with the NIAAA diagnostic criteria and guidelines for mild cognitive impairment) - Evidence of AD pathological process, as confirmed by cerebrospinal fluid or amyloid positron emission tomography scan - Demonstrate abnormal memory function - MMSE score between 22-30 (inclusive) - Clinical Dementia Rating Global Score of 0.5 or 1.0 - Availability of a reliable study partner who accepts to participate in study procedure throughout the study duration - If receiving symptomatic AD medication the dosing regimen must have been stable for 3 months prior to screening and until randomization |
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E.4 | Principal exclusion criteria |
- Any evidence of a condition other than AD that may affect cognition - History or presence of clinically evident systemic vascular disease that in the opinion of the investigator has the potential to affect cognitive function - History of schizophrenia, schizoaffective disorder, major depression, or bipolar disorder - Unstable or clinically significant cardiovascular, kidney or liver disease - At risk of suicide in the opinion of the investigator - Alcohol or substance abuse in past 2 years - Relevant brain hemorrhage, bleeding disorder and cerebrovascular abnormalities - Any contraindications to brain magnetic resonance imaging - Uncontrolled hypertension
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E.5 End points |
E.5.1 | Primary end point(s) |
1.The change from baseline (Day 1) to Week 116 in global outcome, as measured by the Clinical Dementia Rating-Sum of Boxes |
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
1. Baseline (Day 1) to Week 116 |
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E.5.2 | Secondary end point(s) |
1. The change from baseline to Week 116 in cognition, as measured by MMSE total score, Alzheimer's Disease Assessment Scale-Cognition, Subscale 11 and 13, Verbal Fluency Task and Coding 2. The change from baseline to Week 116 in function, as measured by Functional Activities Questionnaire and Alzheimer’s Disease Cooperative Study Group-Activities of Daily Living total score and instrumental score 3. Nature, frequency, severity, and timing of adverse events and serious adverse events 4. Physical examinations, vital signs, blood tests, ECGs, and Columbia-Suicide Severity Rating Scale 5. Nature, frequency, severity, and timing of MRI findings: ARIA-E and amyloid-related imaging abnormality-hemosiderin deposition 6. Nature, frequency, severity, and timing of injection-site reactions 7. Presence of anti-drug antibody (ADAs) during the study relative to the presence of ADAs at baseline 8. Change from baseline to Week 116 in brain amyloid load, as measured by amyloid PET scan in a subset of participants 9. Change from baseline to Week 116 in brain tau load, as measured by tau PET scan in a subset of participants 10. Change from baseline to Week 116 in cerebral spinal fluid markers of disease in a subset of participants, including, but not limited to total tau and phosphorylated tau |
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
1-2. Baseline to Week 116 3-7. Baseline up to end of study (week 164 or Week 35 [Open label extension]) 8-10 Baseline up to week 116 Note: The continuing impact of the COVID-19 pandemic on study procedures will be closely monitored, and if there are greater than anticipated disruptions to study drug administration, the sponsor will have the option to further extend the double-blind treatment period by another 12 weeks and time points will be adapted accordingly. |
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E.6 and E.7 Scope of the trial |
E.6 | Scope of the trial |
E.6.1 | Diagnosis | No |
E.6.2 | Prophylaxis | No |
E.6.3 | Therapy | No |
E.6.4 | Safety | Yes |
E.6.5 | Efficacy | Yes |
E.6.6 | Pharmacokinetic | Yes |
E.6.7 | Pharmacodynamic | Yes |
E.6.8 | Bioequivalence | No |
E.6.9 | Dose response | No |
E.6.10 | Pharmacogenetic | No |
E.6.11 | Pharmacogenomic | No |
E.6.12 | Pharmacoeconomic | No |
E.6.13 | Others | Yes |
E.6.13.1 | Other scope of the trial description |
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E.7 | Trial type and phase |
E.7.1 | Human pharmacology (Phase I) | No |
E.7.1.1 | First administration to humans | No |
E.7.1.2 | Bioequivalence study | No |
E.7.1.3 | Other | No |
E.7.1.3.1 | Other trial type description | |
E.7.2 | Therapeutic exploratory (Phase II) | No |
E.7.3 | Therapeutic confirmatory (Phase III) | Yes |
E.7.4 | Therapeutic use (Phase IV) | No |
E.8 Design of the trial |
E.8.1 | Controlled | Yes |
E.8.1.1 | Randomised | Yes |
E.8.1.2 | Open | No |
E.8.1.3 | Single blind | No |
E.8.1.4 | Double blind | Yes |
E.8.1.5 | Parallel group | No |
E.8.1.6 | Cross over | No |
E.8.1.7 | Other | No |
E.8.2 | Comparator of controlled trial |
E.8.2.1 | Other medicinal product(s) | No |
E.8.2.2 | Placebo | Yes |
E.8.2.3 | Other | No |
E.8.2.4 | Number of treatment arms in the trial | 2 |
E.8.3 |
The trial involves single site in the Member State concerned
| Information not present in EudraCT |
E.8.4 | The trial involves multiple sites in the Member State concerned | Information not present in EudraCT |
E.8.4.1 | Number of sites anticipated in Member State concerned | 3 |
E.8.5 | The trial involves multiple Member States | Yes |
E.8.5.1 | Number of sites anticipated in the EEA | 62 |
E.8.6 Trial involving sites outside the EEA |
E.8.6.1 | Trial being conducted both within and outside the EEA | Yes |
E.8.6.2 | Trial being conducted completely outside of the EEA | No |
E.8.6.3 | If E.8.6.1 or E.8.6.2 are Yes, specify the regions in which trial sites are planned |
Argentina |
Chile |
Japan |
Korea, Republic of |
Mexico |
Singapore |
United States |
Finland |
Poland |
Sweden |
Netherlands |
Spain |
Belgium |
Croatia |
Denmark |
Portugal |
Turkey |
United Kingdom |
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E.8.7 | Trial has a data monitoring committee | Yes |
E.8.8 |
Definition of the end of the trial and justification where it is not the last
visit of the last subject undergoing the trial
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The end of the study is defined as the date when the last patient, last visit (LPLV) occurs or the date at which the last data point required for safety analyses or safety follow-up is received for the last patient, whichever occurs later. |
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E.8.9 Initial estimate of the duration of the trial |
E.8.9.1 | In the Member State concerned years | 4 |
E.8.9.1 | In the Member State concerned months | |
E.8.9.1 | In the Member State concerned days | |
E.8.9.2 | In all countries concerned by the trial years | 4 |