A Biomarker-chip Assay in Preserved Red Blood Cells for the Diagnosis of Alzheimer's Disease
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 150
- 试验地点
- 1
- 主要终点
- Diagnostic performance of Aβ and PKC blood biomarkers for Alzheimer's disease detection
研究概览
简要总结
The ADCHIP study (ST0067) is a non-interventional, monocentric, prospective study conducted by Amoneta Diagnostics and the Leenaards Memory Center (Lausanne, Switzerland). Its main objective is to develop and validate a microfluidic chip-based protocol that stabilizes human red blood cells for several weeks, enabling subsequent testing of blood biomarkers for Alzheimer's disease (AD) diagnosis.
This proof-of-performance study will include 150 well-characterized participants divided equally into three groups: 50 patients with Alzheimer's disease (AD), 50 with non-Alzheimer neurodegenerative diseases (NAD, including Parkinson's disease and frontotemporal dementia), and 50 healthy controls (HC).
The primary objective is to assess the diagnostic performance (sensitivity and specificity) of two main blood-based biomarkers-amyloid-β (Aβ) and protein kinase C (PKC)-measured using Amoneta's proprietary fluorescent assays and chip-cytometry technology. The secondary objective is to evaluate emerging biomarkers (proteins, RNA signatures, metabolomic and lipidomic profiles) for Alzheimer's disease detection.
No therapeutic intervention will be administered; only biological samples (blood and urine) will be collected. Results will be compared with existing clinical, imaging, and cerebrospinal fluid (CSF) biomarkers. The study aims to provide a reliable, non-invasive, and affordable blood test for early Alzheimer's diagnosis, with potential applications for patient stratification and therapeutic monitoring in future clinical trials.
详细描述
Alzheimer's disease (AD) is the most common form of dementia, affecting approximately 35 million people worldwide. While several symptomatic treatments are available, there is currently no cure for advanced forms of AD. Early and accurate diagnosis is therefore essential, as it can help delay disease progression and improve patient management. Current diagnostic tools-clinical and neuropsychological assessments combined with neuroimaging and cerebrospinal fluid (CSF) biomarkers-are costly, invasive, and not easily accessible for large-scale screening. There is a pressing medical need for a simple, non-invasive, and reliable blood-based diagnostic test for AD.
The ADCHIP study (ST0067) aims to develop and validate a chip-based microfluidic assay that stabilizes human red blood cells for extended periods (weeks to months) to enable subsequent detection of blood biomarkers for Alzheimer's disease. The study is conducted under the Eurostars program (Grant E!9748 ADCHIP) and sponsored by Amoneta Diagnostics, in collaboration with Zellkraftwerk GmbH and the Leenaards Memory Center (CLM) at Lausanne University Hospital (CHUV).
This monocentric, non-interventional, prospective study will enroll 150 participants divided equally into three groups:
50 patients with Alzheimer's disease (AD),
50 patients with non-Alzheimer neurodegenerative disorders (NAD: frontotemporal dementia or Parkinson's disease), and
研究设计
- 研究类型
- Observational
- 观察模型
- Cohort
- 时间视角
- Prospective
入排标准
- 年龄范围
- 50 Years 至 85 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •General (all groups):
- •Male or female participants aged 50 to 85 years.
- •Signed and dated written informed consent (or consent from a legally authorized representative when applicable).
- •Alzheimer's Disease (AD) Group:
- •Clinical diagnosis of Alzheimer's disease with a gradual and progressive decline in memory over at least 6 months.
- •Objective evidence of an amnestic syndrome of the hippocampal type (based on RLRI-16, MoCA, or equivalent tests).
- •Montreal Cognitive Assessment (MoCA) score between 15 and 23 (inclusive).
- •Structural MRI compatible with a typical AD diagnosis (3D volumetric MRI required; amyloid PET if available).
- •Retrospective CSF biomarker results showing at least 2 of 3 markers positive (Aβ1-42, total Tau, phosphorylated Tau).
- •Patients with familial AD forms (mutations in APP, PSEN1, or PSEN2) may also be included.
- •Non-Alzheimer Neurodegenerative Disease (NAD) Group:
- •25 patients with frontotemporal dementia (FTD) and 25 patients with Parkinson's disease (PD) responsive to L-DOPA.
- •Retrospective CSF biomarker results showing negative or non-AD profiles (≥2 of 3 markers negative).
- •Neuroimaging compatible with respective diagnoses:
- •FTD: medial temporal atrophy and frontal atrophy score ≥2; MoCA 15-
- •PD: evidence of dopaminergic neuron loss in substantia nigra; MoCA >
- •Healthy Control (HC) Group:
- •Normal cognitive status (MoCA >23 and normal performance on RLRI-16 or equivalent neuropsychological tests).
- •Normal structural MRI (and normal PET scan, if available).
- •Negative CSF biomarkers (if available).
排除标准
- •General (all groups):
- •Neutropenia (neutrophils <1,500/mm³) or thrombocytopenia (platelets <100,000/mm³).
- •Education level below primary school.
- •History of psychiatric disorders (schizophrenia, psychosis).
- •Vascular dementia or mixed dementia.
- •Active infectious or chronic inflammatory diseases affecting blood cell function.
- •Active cancer or cancer under treatment, or treatment stopped within the last 3 months.
- •Use of medications interfering with cognitive function or biomarkers of interest.
- •Major sensory deficits (visual or auditory) affecting cognitive testing.
- •Epilepsy.
- •Known contraindication to MRI (e.g., stent or metallic implant).
- •Group-specific exclusions:
- •AD group: Exclude vascular dementia, Lewy body dementia, mixed dementia, or any non-AD neurodegenerative disease.
- •NAD group: Exclude Alzheimer's disease, vascular, or mixed dementia.
- •HC group: Exclude any neurodegenerative disease, cognitive disorder, or abnormal cognitive testing.
结局指标
主要结局
Diagnostic performance of Aβ and PKC blood biomarkers for Alzheimer's disease detection
时间窗: Immediately after the biological sample collection (single visit per participant).
Quantitative assessment of the sensitivity and specificity of amyloid-β (Aβ) and protein kinase C (PKC) biomarkers measured in stabilized red blood cells using Amoneta's fluorescent microfluidic chip technology. The diagnostic result will be expressed as a binary outcome (Yes/No for Alzheimer's disease) and compared with standard clinical, neuropsychological, neuroimaging, and CSF diagnostic criteria.
次要结局
- Diagnostic performance of emerging circulating biomarkers for Alzheimer's disease detection(Immediately after biological sample collection (single visit per participant).)
- Comparative analysis between blood-based biomarkers and standard Alzheimer's disease diagnostic tools(Immediately after the data analysis following sample collection.)