Finding Retinal Biomarkers in Alzheimer's Disease
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 93
- 试验地点
- 1
- 主要终点
- Diagnostic properties of retinal layers thickness measurement using OCT
研究概览
简要总结
CSF Alzheimer's disease (AD) biomarkers are the only one that reflect both Aβ and tau pathologies. There is increasing evidence for the presence of AD abnormalities in the retina of AD patients. Recent studies showed that they can be detected in living patients. Thus, retinal AD-linked abnormalities might be used as alternative diagnostic biomarkers for AD.
FIREBALZ study aims at identifying and validating retinal biomarkers for the diagnosis of Alzheimer's disease.
The study will include 160 patients in whom LP is indicated for assessment of CSF AD biomarkers according to French health authority (HAS) recommendations. Those patients will undergo a detailed neuro-ophtalmologic evaluation including retinal layers thickness evaluation (optical coherence tomography).
Univariate and multivariate analyses will be performed to test diagnostic properties of retinal parameters as compared to current diagnostic criteria including CSF biomarkers and logistic regression models will be used.
详细描述
Cerebrospinal fluid (CSF) Alzheimer's disease (AD) biomarkers are the only one that reflect both Aβ and tau pathologies. There is increasing evidence for the presence of AD abnormalities in the retina of AD patients. Recent studies showed that they can be detected in living patients. Thus, retinal AD-linked abnormalities might be used as alternative diagnostic biomarkers for AD.
FIREBALZ study aims at identifying and validating retinal biomarkers for the diagnosis of Alzheimer's disease.
The study will include 160 patients in whom lumbar puncture is indicated for assessment of CSF AD biomarkers according to French health authority recommendations. All patients will be recruited in the Cognitive Neurology Center (CMRR Paris Nord Ile-De-France), Paris, France. Patients will undergo a detailed neuro-ophtalmologic evaluation including complete ophthalmologic work-up to rule out chronic retinal pathology and retinal layers thickness evaluation (optical coherence tomography).
Inclusion period will be 40.5 months, Study duration for participants will be 6 at 12 weeks.
Two groups of patients will be defined for comparison according to LP results : patients with AD according to McKhann 2011 criteria and patients without AD Univariate and multivariate analyses will be performed to test diagnostic properties of retinal parameters and logistic regression models will be used.
研究设计
- 研究类型
- Observational
- 观察模型
- Cohort
- 时间视角
- Prospective
入排标准
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Patient managed at the cognitive neurology center for cognitive impairment with a defined LP indication for the assessment of CSF AD biomarkers according to French National Health Agency recommandations in a clinical practice setting
- •Patients with National Health Insurance coverage
- •Patients willing to participate to the research and sign informed consent
排除标准
- •Patient refusing to participate to research or unable to sign informed consent
- •Patients without indication or displaying contraindication of LP
- •Chronic retinal pathology interfering with analysis :
- •chronic glaucoma
- •diabetic retinopathy
- •severe hypertensive retinopathy
- •Contraindication to brain MRI
- •Other pathology considered as severe and impairing life expectancy
结局指标
主要结局
Diagnostic properties of retinal layers thickness measurement using OCT
时间窗: up to 6 at 12 weeks
Diagnostic properties of retinal layers thickness measurement using OCT for the diagnosis of probable AD according to McKahnn 2011 criteria combining clinical criteria and CSF biomarkers results.
次要结局
- the diagnostic properties of optical coherence tomography (OCT) and retinophotos for the diagnosis of Alzheimer's disease(up to 6 at 12 weeks)
- Relationship between retinal layer thickness measurments and markers of clinical(up to 6 at 12 weeks)
- Relationship between retinal layer thickness measurments and retinal abnormalities(up to 6 at 12 weeks)
- Relationship between retinal layer thickness measurments and imaging severity(up to 6 at 12 weeks)
- the diagnostic properties of optical coherence tomography (OCT) and retinophotos for the diagnosis of cognitive alteration of neurodegenerative origin (all causes)(up to 6 at 12 weeks)