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A Study to Investigate the Safety and Effectiveness of SAR448851 in Participants With Early Alzheimer's Disease (TREMHANCE)

2026年8月7日 更新者：Sanofi

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.

研究概览

地位

招聘中

条件

干预/治疗

研究类型

介入性

注册 (估计的)

160

阶段

  • 阶段2

联系人和位置

本节提供了进行研究的人员的详细联系信息，以及有关进行该研究的地点的信息。

学习联系方式

  • 姓名：Trial Transparency email recommended (Toll free for US & Canada)
  • 电话号码：option 6 800-633-1610
  • 邮箱：contact-us@sanofi.com

学习地点

  • 美国
    • Florida
      • The Villages、Florida、美国、32162
        • 招聘中
        • Charter Research - Lady Lake- Site Number : 8400004

参与标准

研究人员寻找符合特定描述的人，称为资格标准。这些标准的一些例子是一个人的一般健康状况或先前的治疗。

资格标准

适合学习的年龄

  • 成人
  • 年长者

接受健康志愿者

不

描述

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.

学习计划

本节提供研究计划的详细信息，包括研究的设计方式和研究的衡量标准。

研究是如何设计的？

设计细节

  • 主要用途：治疗
  • 分配：随机化
  • 介入模型：并行分配
  • 屏蔽：四人间

武器和干预

参与者组/臂
干预/治疗
实验性的：SAR448851
Participants will receive SAR448851 dose 1 or dose 2 oral daily for 48 weeks
药品：SAR448851
Pharmaceutical form: Capsule Route of administration: Oral
安慰剂比较：Placebo
Participants will receive placebo oral daily for 48 weeks
药品：安慰剂
药物剂型：胶囊给药途径：口服

研究衡量的是什么？

主要结果指标

结果测量
措施说明
大体时间
Part A and optional dose 2 cohort: change from baseline to Week 48 in plasma p-tau217
大体时间：From baseline to Week 48
From baseline to Week 48
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
大体时间：From Week 48 to Week 96
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

次要结果测量

结果测量
措施说明
大体时间
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)
大体时间：From baseline to Week 48
From baseline to Week 48
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)
大体时间：From baseline to Week 48
From baseline to Week 48
Part A and optional dose 2 cohort: Change from baseline to Week 48 in CSF soluble triggering receptor expressed on myeloid cells 2 (sTREM2)
大体时间：From baseline to Week 48
From baseline to Week 48
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)
大体时间：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
大体时间：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
Part A and optional dose 2 cohort: Plasma and CSF concentrations of SAR448851
大体时间：From baseline to Week 48
From baseline to Week 48
Part B: Change from baseline to Week 96 in AD biomarkers: plasma p-tau217, plasma GFAP, CSF Ng
大体时间：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
大体时间：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

合作者和调查者

在这里您可以找到参与这项研究的人员和组织。

赞助

Sanofi

研究记录日期

这些日期跟踪向 ClinicalTrials.gov 提交研究记录和摘要结果的进度。研究记录和报告的结果由国家医学图书馆 (NLM) 审查，以确保它们在发布到公共网站之前符合特定的质量控制标准。

研究主要日期

学习开始 (实际的)

2026年7月28日

初级完成 (估计的)

2029年7月31日

研究完成 (估计的)

2029年7月31日

研究注册日期

首次提交

2026年6月30日

首先提交符合 QC 标准的

2026年6月30日

首次发布 (实际的)

2026年7月7日

研究记录更新

最后更新发布 (实际的)

2026年8月10日

上次提交的符合 QC 标准的更新

2026年8月7日

最后验证

2026年8月1日

更多信息

与本研究相关的术语

其他相关的 MeSH 术语

其他研究编号

  • ACT23645
  • 2025-524581-14 (注册表标识符：CTIS)
  • U1111-1328-4936 (注册表标识符：ICTRP)

计划个人参与者数据 (IPD)

计划共享个人参与者数据 (IPD)？

是的

IPD 计划说明

Qualified researchers may request access to patient level data and related study documents including the clinical study report, study protocol with any amendments, blank case report form, statistical analysis plan, and dataset specifications. Patient level data will be anonymized and study documents will be redacted to protect the privacy of trial participants. Further details on Sanofi's data sharing criteria, eligible studies, and process for requesting access can be found at: https://vivli.org

药物和器械信息、研究文件

研究美国 FDA 监管的药品

是的

研究美国 FDA 监管的设备产品

不

此信息直接从 clinicaltrials.gov 网站检索，没有任何更改。如果您有任何更改、删除或更新研究详细信息的请求，请联系 register@clinicaltrials.gov. clinicaltrials.gov 上实施更改，我们的网站上也会自动更新.

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