MIRAGE: Multi-Institutional Research in Alzheimer's Genetic Epidemiology
|First Received Date ICMJE||October 13, 2005|
|Last Updated Date||February 24, 2009|
|Start Date ICMJE||September 2002|
|Primary Completion Date||Not Provided|
|Current Primary Outcome Measures ICMJE||Not Provided|
|Original Primary Outcome Measures ICMJE||Not Provided|
|Change History||Complete list of historical versions of study NCT00239759 on ClinicalTrials.gov Archive Site|
|Current Secondary Outcome Measures ICMJE||Not Provided|
|Original Secondary Outcome Measures ICMJE||Not Provided|
|Current Other Outcome Measures ICMJE||Not Provided|
|Original Other Outcome Measures ICMJE||Not Provided|
|Brief Title ICMJE||MIRAGE: Multi-Institutional Research in Alzheimer's Genetic Epidemiology|
|Official Title ICMJE||Genetic Epidemiological Studies of Apolipoprotein E and Alzheimer's Disease|
The goal of MIRAGE is to evaluate the association of genetic and non-genetic risk factors for Alzheimer's Disease.
For the past 13 years the MIRAGE project has demonstrated that genetic factors play a major role in the development of Alzheimer's Disease (AD) among patients ascertained in clinical settings. This research has also shown that the E4 variant of apolipoprotein E (APOE), is the strongest AD risk factor identified thus far.
The researchers are turning their attention to the growing body of evidence from pathological, epidemiological and genetic studies that risk factors for vascular disease also enhance the risk of AD. However, since most epidemiological studies lack neuroimaging data, it is unclear whether the apparent association between vascular risk factors and AD is brought about by ischemic injury to the brain, acceleration of the primary Alzheimer neurodegenerative process, or some other process.
Some vascular risk factors are more prevalent in African American and Japanese American populations than in Caucasians. This study will build upon earlier work by evaluating the association between APOE, genes involved in vascular function, and other indictors of cerebrovascular health including blood pressure and structural brain imaging (MRI), and susceptibility to AD in these ethnic groups.
In order to carry out this project successfully, a sample of 1000 patients (500 Caucasians, 300 African Americans, 200 Japanese Americans) who meet NINCDS/ADRDA criteria for probable or definite AD from 11 centers in the U.S., Canada and Germany will be recruited. Many patients will be identified from the existing family registries. Family history, medical history, and epidemiological information will be obtained from the AD patient and their first-degree relatives using standardized questionnaire instruments and established protocols. A cognitive screening test will be administered to and blood samples will be collected from the patient's living siblings, spouses and children over the age of 50 years. DNA, plasma and MRI of the brain will be evaluated in patients and siblings.
|Study Type ICMJE||Observational|
|Study Design ICMJE||Not Provided|
|Target Follow-Up Duration||Not Provided|
|Sampling Method||Not Provided|
|Study Population||Not Provided|
|Condition ICMJE||Alzheimer's Disease|
|Intervention ICMJE||Not Provided|
|Study Group/Cohort (s)||Not Provided|
* Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
|Recruitment Status ICMJE||Completed|
|Estimated Enrollment ICMJE||2000|
|Completion Date||June 2008|
|Primary Completion Date||Not Provided|
|Eligibility Criteria ICMJE||
NOTE: This trial accepts patients with Probable AD, and their cognitively normal brothers or sisters
|Ages||50 Years and older|
|Accepts Healthy Volunteers||Yes|
|Contacts ICMJE||Contact information is only displayed when the study is recruiting subjects|
|Location Countries ICMJE||United States, Greece, Germany, Canada|
|NCT Number ICMJE||NCT00239759|
|Other Study ID Numbers ICMJE||IA0085, 2R01AG0902911-A2|
|Has Data Monitoring Committee||Not Provided|
|Responsible Party||Not Provided|
|Study Sponsor ICMJE||National Institute on Aging (NIA)|
|Collaborators ICMJE||Not Provided|
|Information Provided By||National Institute on Aging (NIA)|
|Verification Date||February 2009|
ICMJE Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP