A Study to Investigate the Safety and Effectiveness of SAR448851 in Participants With Early Alzheimer's Disease (TREMHANCE)
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
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.
Studieoversigt
Status
Status
Betingelser
Betingelser
Intervention / Behandling
Intervention / Behandling
Undersøgelsestype
Undersøgelsestype
Tilmelding (Anslået)
Tilmelding
Fase
Fase
- Fase 2
Kontakter og lokationer
Studiekontakt
Studiekontakt
- Navn: Trial Transparency email recommended (Toll free for US & Canada)
- Telefonnummer: option 6 800-633-1610
- E-mail: contact-us@sanofi.com
Studiesteder
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Florida
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The Villages, Florida, Forenede Stater, 32162
- Rekruttering
- Charter Research - Lady Lake- Site Number : 8400004
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Deltagelseskriterier
Berettigelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
- Voksen
- Ældre voksen
Tager imod sunde frivillige
Beskrivelse
Inclusion Criteria:
- Participant must be 55 to 85 years (inclusive) of age, at the time of signing the informed consent.
- 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 global Clinical Dementia Rating (CDR) score 0.5 to 1.0 and a CDR-Memory Box score ≥ 0.5 at screening.
- 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 Criteria:
- 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 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.
- The participant is currently receiving anticoagulant therapies.
- The participant has had malignancy in the 3 years prior to Screening, 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 trial.
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Behandling
- Tildeling: Randomiseret
- Interventionel model: Parallel tildeling
- Maskning: Firedobbelt
Antal våben
Våben og indgreb
Deltagergruppe / ArmDeltagergruppe / Arm |
Intervention / BehandlingIntervention / Behandling |
|---|---|
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Eksperimentel: SAR448851
Participants will receive SAR448851 dose 1 or dose 2 oral daily for 48 weeks
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Pharmaceutical form: Capsule Route of administration: Oral
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Placebo komparator: Placebo
Participants will receive placebo oral daily for 48 weeks
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Farmaceutisk form: Kapsel Indgivelsesvej: Oral
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Hvad måler undersøgelsen?
Primære resultatmål
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
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Part A and optional dose 2 cohort: change from baseline to Week 48 in plasma p-tau217
Tidsramme: From baseline to Week 48
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From baseline to Week 48
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Part B: Number of participants with treatment-emergent adverse events (TEAE), including ARIA-E and ARIA-H by brain MRI, laboratory assessments, vital sign measurements, ECGs and the C-SSRS
Tidsramme: From Week 48 to Week 96
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Number of participants experiencing at least one treatment-emergent adverse event (TEAE), including amyloid-related imaging abnormalities with edema (ARIA-E) and amyloid-related imaging abnormalities with hemosiderin (ARIA-H) by brain magnetic resonance imaging (MRI), laboratory assessments, vital sign measurements, electrocardiograms (ECGs) and the Columbia-Suicide Severity Rating Scale (C-SSRS)
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From Week 48 to Week 96
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Sekundære resultatmål
Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
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Part A and optional dose 2 cohort: Change from baseline to Week 48 in plasma glial fibrillary acidic protein (GFAP) and cerebrospinal fluid (CSF) neurogranin (Ng)
Tidsramme: From baseline to Week 48
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From baseline to Week 48
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Part A and optional dose 2 cohort: Change from baseline to Week 48 in brain amyloid plaque deposition as measured by amyloid positron emission tomography (PET)
Tidsramme: From baseline to Week 48
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From baseline to Week 48
|
|
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Part A and optional dose 2 cohort: Change from baseline to Week 48 in CSF soluble triggering receptor expressed on myeloid cells 2 (sTREM2)
Tidsramme: From baseline to Week 48
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From baseline to Week 48
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Part A and optional dose 2 cohort: Number of participants with TEAEs and serious adverse events (SAEs), and discontinuations due to TEAEs and SAEs (including laboratory assessments, vital sign measurements, ECGs and the C-SSRS)
Tidsramme: From baseline to Week 48
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Number of participants experiencing at least one treatment-emergent adverse event (TEAE), serious adverse event (SAE) or discontinuation due to TEAEs and SAEs (including laboratory assessments, vital sign measurements, electrocardiograms [ECGs] and the Columbia-Suicide Severity Rating Scale [C-SSRS])
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From baseline to Week 48
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Part A and optional dose 2 cohort: Number of participants with ARIA-E and ARIA-H assessed by brain MRIs
Tidsramme: From baseline to Week 48
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Number of participants with amyloid-related imaging abnormalities with edema (ARIA-E) and amyloid-related imaging abnormalities with hemosiderin (ARIA-H) assessed by brain magnetic resonance imaging (MRI).
ARIA event: adverse event causing brain swelling or bleeding that requires close monitoring.
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From baseline to Week 48
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Part A and optional dose 2 cohort: Plasma and CSF concentrations of SAR448851
Tidsramme: From baseline to Week 48
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From baseline to Week 48
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Part B: Change from baseline to Week 96 in AD biomarkers: plasma p-tau217, plasma GFAP, CSF Ng
Tidsramme: From baseline to Week 96
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Change in Alzheimer's disease (AD) biomarkers: plasma p-tau217, plasma glial fibrillary acidic protein (GFAP) and cerebrospinal fluid (CSF) neurogranin (Ng)
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From baseline to Week 96
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Part B: Change from Week 48 to Week 96 in AD biomarkers: plasma p-tau217, plasma GFAP, CSF Ng
Tidsramme: From Week 48 to Week 96
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Change in Alzheimer's disease (AD) biomarkers: plasma p-tau217, plasma glial fibrillary acidic protein (GFAP) and cerebrospinal fluid (CSF) neurogranin (Ng)
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From Week 48 to Week 96
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Samarbejdspartnere og efterforskere
Sponsor
Sponsor
Datoer for undersøgelser
Studer store datoer
Studiestart (Faktiske)
Studiestart
Primær færdiggørelse (Anslået)
Primær færdiggørelse
Studieafslutning (Anslået)
Studieafslutning
Datoer for studieregistrering
Først indsendt
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først indsendt, der opfyldte QC-kriterier
Først opslået (Faktiske)
Først opslået
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
Sidste opdatering sendt
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
Andre undersøgelses-id-numre
- ACT23645
- 2025-524581-14 (Registry Identifier: CTIS)
- U1111-1328-4936 (Registry Identifier: ICTRP)
Plan for individuelle deltagerdata (IPD)
Planlægger du at dele individuelle deltagerdata (IPD)?
IPD-planbeskrivelse
Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter
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