Testing SAR448851 against a placebo for Alzheimer's type dementia
Official title: A Study to Investigate the Safety and Effectiveness of SAR448851 in Participants With Early Alzheimer's Disease
A Phase 2, Randomized, Double-blind, Placebo-controlled Study to Evaluate the Efficacy and Safety of 48-week SAR448851 Treatment Followed by Open-label Extension in Participants With Early Alzheimer's Disease
- Phase 2
- 2 groups
- Sites in Ottawa, Toronto and 1 more city
- Recruiting
Interventions
- Medication
SAR448851
Pharmaceutical form: Capsule Route of administration: Oral
- Medication
Placebo
Pharmaceutical form: Capsule Route of administration: Oral
Canadian Sites (3)
3 of 3 recruiting
- Recruiting
Investigational Site Number : 1240001
Ottawa, Ontario
- Recruiting
Investigational Site Number : 1240005
Toronto, Ontario
- Recruiting
Investigational Site Number : 1240008
Montreal, Quebec
Eligibility Criteria
See who this study is looking for12 criteria
The trial’s own eligibility text, word for word from the registry. Only the trial site can say who takes part.
Inclusion
- +Participant must be 55 to 85 years (inclusive) of age, at the time of signing the informed consentInformed consentThe process of being told what taking part involves, then choosing freely.Read more →.
- +Have a global Clinical Dementia Rating (CDR) score 0.5 to 1.0 and a CDR-Memory Box score ≥ 0.5 at screeningScreeningThe checks done before joining, to see whether a study fits.Read more →.
- +Diagnosis of mild cognitive impairment (MCI) due to Alzheimer's disease (AD) (National Institute on Aging-Alzheimer's Association \[NIA-AA\] Stage 3) or mild AD dementia (NIA-AA Stage 4).
- +Have a study partner who must provide separate written informed consent at screening. Study partner should be \>18 years of age, have known participant for at least 1 year, and have a minimum of 8 hours per week contact with participant.
- +The participant has evidence of cerebral amyloid pathology confirmed by positive visual read on amyloid positron emission tomography (PET) at screening.
Exclusion
- −The participant has any history of significant neurological disease including but not limited to, frontotemporal dementia, Lewy body dementia, Huntington's disease, serious infection of the brain, Parkinson's disease, multiple concussions, multiple sclerosis, or epilepsy or recurrent seizures (except febrile childhood seizures).
- −The participant has evidence of more than 4 microhemorrhages (\<10 mm in diameter) or superficial siderosis.
- −The participant carries two copies of the apolipoprotein-E epsilon 4 (APOE4) allele (APOE4/4).
- −The participant is currently receiving anticoagulant therapies.
- −The participant has had malignancy in the 3 years prior to ScreeningScreeningThe checks done before joining, to see whether a study fits.Read more →, excluding basal cell carcinoma, squamous cell carcinoma of the skin, melanoma in situ, Stage 1 or 2 prostate cancer, fully resected renal cell cancers, or cervical carcinoma in situ that has been successfully treated.
- −The above information is not intended to contain all considerations relevant to a participant's potential participation in a clinical trialInterventional studyA study where participants are given something to see what happens.Read more →.
- −The participant is currently receiving or has previously received any anti-amyloid immunotherapy (including, but not limited to, aducanumab, lecanemab, or donanemab) or triggering receptor expressed on myeloid cells 2 (TREM-2) targeting therapy.
In plain language
Assembled directly from this trial’s registry record. Every sentence traces to a field below — nothing here is generated or interpreted.
What this study is
This study is testing a treatment for a condition.
Phase 2Phase 2A middle-stage study looking at what a treatment does and watching for side effects.Read more → — a middle-stage study in a few hundred people at most, looking at what the treatment does and watching for side effectsSide effectAn unwanted effect thought to be caused by the treatment itself.Read more →.
From the trial registry
Built from these fields:
- designModule.designInfo.primaryPurpose
- designModule.phases
Who receives what
There are 2 groups in this study.
Group A receives SAR448851.
Registry label: A: SAR448851
Group B, the placeboPlaceboA dummy treatment with no active medicine, used for comparison.Read more → group, receives Placebo.
Registry label: B: Placebo
From the trial registry
Built from these fields:
- armsInterventionsModule.armGroups[].label
- armsInterventionsModule.armGroups[].type
- armsInterventionsModule.armGroups[].interventionNames
How the study is run
Which group you would be placed in is decided by chance, like a coin flip — not by you and not by your doctor.
You, the study team, the people giving the treatment, and the people analysing the results would all be kept unaware of which group you are in until the study ends.
From the trial registry
Built from these fields:
- designModule.designInfo.allocation
- designModule.designInfo.maskingInfo.masking
Is there a placebo?
One group receives a placeboPlaceboA dummy treatment with no active medicine, used for comparison.Read more → — a dummy treatment with no active medicine in it.
From the trial registry
Built from these fields:
- armsInterventionsModule.armGroups[].type
- armsInterventionsModule.armGroups[].interventionNames
Who the study is looking for
The study lists an age range of 55 years to 85 years.
The study is open to people of any sex.
The study does not accept healthy volunteersHealthy volunteerSomeone without the condition being studied who takes part anyway.Read more →.
These are the criteria the study lists. Only the trial siteTrial siteA hospital or clinic where a study is actually run.Read more → can decide whether someone can take part.
From the trial registry
Built from these fields:
- eligibilityModule.minimumAge
- eligibilityModule.maximumAge
- eligibilityModule.sex
- eligibilityModule.healthyVolunteers
How big and how long
The study aims to enrol about 160 people.
The study is currently expected to finish around July 2029.
The main measurement is taken over: From baselineBaselineYour starting measurements, taken before treatment begins.Read more → to Week 48.
From the trial registry
Built from these fields:
- designModule.enrollmentInfo.count
- statusModule.completionDateStruct.date
- outcomesModule.primaryOutcomes[].timeFrame
What the study measures
Part A and optional dose 2 cohortCohortA group of participants sharing a characteristic, followed together.Read more →: change from baselineBaselineYour starting measurements, taken before treatment begins.Read more → to Week 48 in plasma p-tau217 — measured over From baseline to Week 48.
Part B: Number of participants with treatment-emergent adverse eventsAdverse eventAny medical problem that happens during a study, whether or not the treatment caused it.Read more → (TEAE), including ARIA-E and ARIA-H by brain MRI, laboratory assessments, vital sign measurements, ECGs and the C-SSRS — measured over From Week 48 to Week 96.
From the trial registry
Built from these fields:
- outcomesModule.primaryOutcomes[].measure
- outcomesModule.primaryOutcomes[].timeFrame
Source: NCT07688213 on ClinicalTrials.gov. The full registry text is further down this page — this summary never replaces it.
Not medical advice. What do these terms mean?
What is being tested — in plain terms
About SAR448851Drug
Pharmaceutical form: Capsule Route of administration: Oral
From the trial registry — its own words, unedited.
What a drug is here: A medicine — a chemical or small-molecule treatment — given as the thing being studied.
Read the full explanation → · in clinical review
About PlaceboDrug
Pharmaceutical form: Capsule Route of administration: Oral
From the trial registry — its own words, unedited.
What a drug is here: A medicine — a chemical or small-molecule treatment — given as the thing being studied.
Read the full explanation → · in clinical review
Common questions
Answered from this trial’s registry record. Where the record doesn’t say, these answers say so rather than filling the gap.
Am I eligible for this trial?
Only the trial siteTrial siteA hospital or clinic where a study is actually run.Read more → can decide whether someone can take part. Concord cannot make that determination, and neither can any tool that has not examined you.
What the study lists: an age range of 55 years to 85 years.
The full inclusionInclusion criteriaThe things you must have or be for a study to consider you.Read more → and exclusion criteriaExclusion criteriaThe things that would prevent someone from taking part.Read more → are published on this page, exactly as the study team wrote them.
The useful next step is to bring this trial to your doctor. Answering a few questions first gives them something concrete to review.
From the trial registry
- eligibilityModule.minimumAge
- eligibilityModule.maximumAge
- eligibilityModule.eligibilityCriteria
Is there a placebo?
Yes. This study includes a placeboPlaceboA dummy treatment with no active medicine, used for comparison.Read more → group — a dummy treatment with no active medicine in it.
From the trial registry
- armsInterventionsModule.armGroups[].type
Would I know which treatment I am getting?
You, the study team, the people giving the treatment, and the people analysing the results would all be kept unaware of which group you are in until the study ends.
Which group you would be placed in is decided by chance, like a coin flip — not by you and not by your doctor.
From the trial registry
- designModule.designInfo.maskingInfo.masking
- designModule.designInfo.allocation
Who can join?
The study lists an age range of 55 years to 85 years.
It is open to people of any sex.
It does not accept healthy volunteersHealthy volunteerSomeone without the condition being studied who takes part anyway.Read more →.
Only the trial siteTrial siteA hospital or clinic where a study is actually run.Read more → can confirm whether a particular person can take part.
From the trial registry
- eligibilityModule.minimumAge
- eligibilityModule.maximumAge
- eligibilityModule.sex
- eligibilityModule.healthyVolunteers
How long would this take?
The study's main measurement is taken over: From baselineBaselineYour starting measurements, taken before treatment begins.Read more → to Week 48.
The study as a whole is currently expected to finish around 2029-07-31.
How long any one person takes part can differ from the study length. The study team can tell you what the schedule looks like in practice.
From the trial registry
- outcomesModule.primaryOutcomes[].timeFrame
- statusModule.completionDateStruct.date
How many people are taking part?
The study aims to enrol about 160 people.
From the trial registry
- designModule.enrollmentInfo.count
Where is this happening?
This study lists 3 locations, including: Ottawa, Ontario, Canada; Toronto, Ontario, Canada; Montreal, Quebec, Canada.
Sites can open and close during a study, so confirm with the team before travelling.
From the trial registry
- trial_locations
About This Trial
This is a randomized, placebo-controlled Phase 2 study to evaluate the efficacy and safety of SAR448851 in early Alzheimer's disease (AD) participants. The purpose of this study is to measure efficacy and safety with once daily oral SAR448851 compared to placebo in participants with mild cognitive impairment due to AD or mild AD dementia and with evidence of cerebral amyloid pathology. This Phase 2 study has 2 parts: Part A is a randomized, double-blind, parallel-group, placebo-controlled study with SAR448851 oral once daily. Part B is an open-label extension. All participants who complete Part A may continue to Part B. An optional dose 2 cohort will be considered to evaluate the efficacy and safety of SAR448851 dose 2 oral once daily. The study duration will be up to 111 weeks for Part A and B, and up to 63 weeks for the dose 2 cohort. The treatment duration will be up to 96 weeks for Part A and B, and up to 48 weeks for the dose 2 cohort. Up to 160 participants will be included in this study.
Worth passing on?
Save it to the Care Package and send it to them, or to their doctor, in one message. Whether they follow it up is theirs to decide.
Review the Care PackageThis page is for informational purposes only and does not constitute medical advice. Clinical trial eligibility can only be determined by the trial site after proper screening. Trial information is sourced from ClinicalTrials.gov and may not reflect the most current status. Always consult your healthcare provider before making decisions about clinical trial participation.