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 chronic neurodegenerative disease that destroys memory and other important mental functions |
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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 | LLT |
E.1.2 | Classification code | 10001896 |
E.1.2 | Term | Alzheimer's disease |
E.1.2 | System Organ Class | 100000004852 |
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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 |
T-o assess the long-term safety and tolerability of crenezumab (60 mg/kg IV Q4W) in eligible patients with AD who participated in Study BN29552 or BN29553 and completed the Week 105 study visit. |
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E.2.2 | Secondary objectives of the trial |
For exploratory efficacy objectives, the study aims to evaluate the long-term effect of crenezumab on global outcomes of disease progression, cognition, disease severity, patient dependence, patient function, patient behaviour and neuropsychological symptoms, health-related quality of life, and effect on caregiver burden. For exploratory pharmacokinetic objectives, the study aims to evaluate PK characteristics of crenezumab and to explore exposure-response relationships in patients with prodromal to mild Alzheimer’s disease. For exploratory biomarker objectives, the study aims to evaluate the effect of crenezumab on biomarkers.
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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 |
Amyloid-PET Longitudinal Substudy & Tau-PET Longitudinal Substudy included in the main protocol V1 dated 18.Sept 2017 |
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E.3 | Principal inclusion criteria |
•Previous participation in Study BN29552 or BN29553 and completion of the Week 105 visit •Able to provide written consent signed by the patient or the patient’s authorized representative under applicable local law •A caregiver, defined as: –Has frequent and sufficient contact with the patient to be able to provide accurate information regarding the patient’s cognitive and functional abilities –Be in sufficiently good general health •Willingness and ability to complete all aspects of the study •Adequate visual and auditory acuity, in the investigator’s judgment, sufficient to perform the neuropsychological testing •For women of childbearing potential: agreement to remain abstinent or use contraceptive measures, and agreement to refrain from donating eggs, women must remain abstinent or use contraceptive methods that result in a failure rate of <1% per year during the treatment period and for at least 8 weeks after the final dose of study drug •For men: agreement to remain abstinent or use contraceptive measures, and agreement to refrain from donating sperm, with a female partner of childbearing potential or pregnant female partner, men must remain abstinent or use a condom during the treatment period and for at least 8 weeks after the final dose of study drug to avoid exposing the embryo
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E.4 | Principal exclusion criteria |
•Patients who discontinued treatment permanently in Study BN29552 or BN29553 for safety reasons •Impaired coagulation •Evidence of more than 10 microbleeds and/or ARIA-H at the Study BN29552 or BN29553 Week 105 visit, as assessed by central review of MRI •Diagnosed with three recurrent, symptomatic ARIA-E events or exacerbations of previous events •Presence of intracranial lesion that could potentially increase the risk of CNS bleeding (e.g., intracranial aneurysm; arterio-venous malformation) •At risk of suicide in the opinion of the investigator •Alcohol and/or substance abuse or dependence (according to Diagnostic and Statistical Manual of Mental Disorders Version 5 criteria) within the past 2 years and during the study (nicotine use is allowed; marijuana use is not allowed within the past 2 years) •Inability to tolerate MRI procedures or contraindication to MRI •Pregnant or lactating, or intending to become pregnant during the study •Any other severe or unstable medical condition that, in the opinion of the investigator or Sponsor, could be expected to progress, recur, or change •Chronic use of anticoagulants or participation in any other investigational drug treatment trial
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E.5 End points |
E.5.1 | Primary end point(s) |
1.Nature, frequency, severity, and timing of adverse events and serious adverse events 2.Incidence of adverse events of special interest, specifically pneumonia 3.Changes in vital signs, clinical laboratory tests, Electrocardiogram assessments from baseline over time 4.Changes in Columbia-Suicide Severity Rating Scale (CSSR-S) scores from baseline over time 5.Adverse events as assessed by MRI: amyloid-related imaging abnormalities edema/effusion and ARIA H 6.Incidence of immunogenicity as evidenced by antibodies to crenezumab or other components of drug product
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
1-2. Up to 4 years 3. From baseline up to 4 years 4. From baseline, OLE Weeks 25, 53, 77, 105 and every 52 weeks thereafter and follow-up for patients discontinuing OLE and completing OLE treatment 5. At Weeks 13, 25, 53, 105, and every 52 weeks thereafter and follow-up for patients discontinuing OLE and completing OLE treatment 6. OLE Weeks 1, 13, 25, 53, 105 and every 52 weeks thereafter, follow-up for patients discontinuing OLE and completing OLE treatment
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E.5.2 | Secondary end point(s) |
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
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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 | Yes |
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 | Yes |
E.6.11 | Pharmacogenomic | No |
E.6.12 | Pharmacoeconomic | No |
E.6.13 | Others | No |
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 | No |
E.8.1.2 | Open | Yes |
E.8.1.3 | Single blind | No |
E.8.1.4 | Double blind | No |
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 | No |
E.8.2.3 | Other | Yes |
E.8.2.3.1 | Comparator description |
PET Ligand (florbetapir F18) |
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E.8.2.4 | Number of treatment arms in the trial | 1 |
E.8.3 |
The trial involves single site in the Member State concerned
| No |
E.8.4 | The trial involves multiple sites in the Member State concerned | Yes |
E.8.4.1 | Number of sites anticipated in Member State concerned | 9 |
E.8.5 | The trial involves multiple Member States | Yes |
E.8.5.1 | Number of sites anticipated in the EEA | 184 |
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 |
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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 OLE study will continue until crenezumab is commercially available in the patient’s country,as per local regulation,or should the Sponsor decide to terminate the program for pAD to mAD. However,all patients will have the opportunity to complete approx.2 years of treatment even if crenezumab is commercially available in the country.The study will not exceed approx.2 years after the last patient enrolled during the global enrollment phase (in BN29552orBN29553) enters the OLE study. |
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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 | 3 |
E.8.9.1 | In the Member State concerned months | 8 |
E.8.9.1 | In the Member State concerned days | |
E.8.9.2 | In all countries concerned by the trial years | 4 |
E.8.9.2 | In all countries concerned by the trial months | 9 |