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.
Studienübersicht
Status
Status
Bedingungen
Bedingungen
Intervention / Behandlung
Intervention / Behandlung
Studientyp
Studientyp
Einschreibung (Geschätzt)
Einschreibung
Phase
Phase
- Phase 2
Kontakte und Standorte
Studienkontakt
Studienkontakt
- Name: Trial Transparency email recommended (Toll free for US & Canada)
- Telefonnummer: option 6 800-633-1610
- E-Mail: contact-us@sanofi.com
Studienorte
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Florida
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The Villages, Florida, Vereinigte Staaten, 32162
- Rekrutierung
- Charter Research - Lady Lake- Site Number : 8400004
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-
Teilnahmekriterien
Zulassungskriterien
Zulassungskriterien
Studienberechtigtes Alter
- Erwachsene
- Älterer Erwachsener
Akzeptiert gesunde Freiwillige
Beschreibung
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.
Studienplan
Wie ist die Studie aufgebaut?
Designdetails
- Hauptzweck: Behandlung
- Zuteilung: Zufällig
- Interventionsmodell: Parallele Zuordnung
- Maskierung: Vervierfachen
Anzahl der Arme
Waffen und Interventionen
Teilnehmergruppe / ArmTeilnehmergruppe / Arm |
Intervention / BehandlungIntervention / Behandlung |
|---|---|
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Experimental: 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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Darreichungsform: Kapsel Verabreichungsweg: Oral
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Was misst die Studie?
Primäre Ergebnismessungen
Primäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
|---|---|---|
|
Part A and optional dose 2 cohort: change from baseline to Week 48 in plasma p-tau217
Zeitfenster: From baseline to Week 48
|
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
Zeitfenster: 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)
|
From Week 48 to Week 96
|
Sekundäre Ergebnismessungen
Sekundäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
|---|---|---|
|
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)
Zeitfenster: From baseline to Week 48
|
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)
Zeitfenster: From baseline to Week 48
|
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)
Zeitfenster: From baseline to Week 48
|
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)
Zeitfenster: From baseline to Week 48
|
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])
|
From baseline to Week 48
|
|
Part A and optional dose 2 cohort: Number of participants with ARIA-E and ARIA-H assessed by brain MRIs
Zeitfenster: From baseline to Week 48
|
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.
|
From baseline to Week 48
|
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Part A and optional dose 2 cohort: Plasma and CSF concentrations of SAR448851
Zeitfenster: From baseline to Week 48
|
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
Zeitfenster: From baseline to Week 96
|
Change in Alzheimer's disease (AD) biomarkers: plasma p-tau217, plasma glial fibrillary acidic protein (GFAP) and cerebrospinal fluid (CSF) neurogranin (Ng)
|
From baseline to Week 96
|
|
Part B: Change from Week 48 to Week 96 in AD biomarkers: plasma p-tau217, plasma GFAP, CSF Ng
Zeitfenster: From Week 48 to Week 96
|
Change in Alzheimer's disease (AD) biomarkers: plasma p-tau217, plasma glial fibrillary acidic protein (GFAP) and cerebrospinal fluid (CSF) neurogranin (Ng)
|
From Week 48 to Week 96
|
Mitarbeiter und Ermittler
Sponsor
Sponsor
Studienaufzeichnungsdaten
Haupttermine studieren
Studienbeginn (Tatsächlich)
Studienbeginn
Primärer Abschluss (Geschätzt)
Primärer Abschluss
Studienabschluss (Geschätzt)
Studienabschluss
Studienanmeldedaten
Zuerst eingereicht
Zuerst eingereicht
Zuerst eingereicht, das die QC-Kriterien erfüllt hat
Zuerst eingereicht, das die QC-Kriterien erfüllt hat
Zuerst gepostet (Tatsächlich)
Zuerst gepostet
Studienaufzeichnungsaktualisierungen
Letztes Update gepostet (Tatsächlich)
Letztes Update gepostet
Letztes eingereichtes Update, das die QC-Kriterien erfüllt
Letztes eingereichtes Update, das die QC-Kriterien erfüllt
Zuletzt verifiziert
Zuletzt verifiziert
Mehr Informationen
Begriffe im Zusammenhang mit dieser Studie
Zusätzliche relevante MeSH-Bedingungen
Andere Studien-ID-Nummern
Andere Studien-ID-Nummern
- ACT23645
- 2025-524581-14 (Registrierungskennung: CTIS)
- U1111-1328-4936 (Registrierungskennung: ICTRP)
Plan für individuelle Teilnehmerdaten (IPD)
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Beschreibung des IPD-Plans
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Studiert ein von der US-amerikanischen FDA reguliertes Arzneimittelprodukt
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