Active clinical trials for "Alzheimer Disease"

A Phase 2/3 cross-sectional and longitudinal observational study evaluating imaging characteristics of flortaucipir in control subjects and patients with clinically defined MCI and AD dementia (AD).

This is a cross-sectional and longitudinal study to evaluate the clinical utility of [18F]THK-5351 positron emission computed tomography in cognitively healthy volunteers, mild cognitive impairment (MCI), Alzheimer's disease (AD) and other neurodegenerative patients.

When older patients develop cognitive problems - like memory loss - there may be any of several underlying causes, sometimes occurring in combination. Clinicians have a better chance of providing appropriate treatment if they understand what the cause of the problem is. A diagnostic tool can help the patient by helping the clinician to make a more accurate diagnosis. This study investigates whether a new diagnostic tool - beta amyloid imaging - may potentially improve medical practice. The tool can potentially improve practice only if it can influence clinical judgment. This study investigates whether the provision of beta amyloid imaging information influences clinical judgment. The investigators will conduct a survey that presents clinicians with descriptions of hypothetical older patients with cognitive complaints. Some of the respondents also receive beta amyloid imaging information. The investigators will test the investigators hypothesis that the information will affect diagnostic judgment and management recommendations by comparing the responses of clinicians who receive the beta amyloid information to the responses of clinicians who do not.

This study will test two different doses of florbetapir F 18 to determine which dose is best to image amyloid plaques in the brains of Alzheimer's Disease (AD) patients using a positron emission tomography (PET) scanner.

Re-read of brain amyloid scans acquired in previous AV-45 clinical studies by readers trained using updated reading methodology. The scans in this study came from subjects who had Alzheimer's Disease (AD) or Mild Cognitive Impairment (MCI).

Main objective: investigate whether a functional polymorphism of CR1 (length, number of binding sites in C4b C3b, erythrocyte density, rate of soluble CR1 ...) so determined genetic or acquired, is a susceptibility factor for the disease Alzheimer's.

A few studies suggest that patients suffering from neurodegenerative diseases (such a multiple sclerosis or Alzheimer's disease (AD)) show decreased thickness of the retinal nerve fiber layer (RNFL), indicating axonal degeneration. High-definition spectral domain optical coherence tomography (SD-OCT), performed without radiation in a few seconds per eye, offers a precise and standardized estimation of this parameter, which could constitute a biomarker for cerebral axonal degeneration. These RNFL deficits might even be the earliest sign of AD, prior to damage of the hippocampal region that impacts memory. Besides, some associations of AD with some degenerative diseases of the eye (glaucoma, microvascular abnormalities, age-related macular degeneration (AMD)) have also been reported. It therefore seems interesting to determine whether RNFL thickness, and other ocular parameters, may give some indications for a better detection of AD and cognitive decline in the elderly.

Study 18F-AV-45-010 is designed to evaluate the cerebral uptake of florbetapir 18F as measured by PET imaging in frontotemporal disorder (FTD) in comparison to cognitively normal volunteers and subjects with Alzheimer's disease (AD).

This study is designed to evaluate the agreement between florbetapir F 18 scan interpretation in the clinic and by expert readers.

The purpose of this study is to determine if low level magnetic fields can help to improve memory in patients diagnosed with Alzheimer's dementia.