Subarachnoid hemorrhage (SAH) accounts for nearly one-third of potential years of life lost among stroke patients before age 65, with an economic burden estimated at over five billion dollars per year. Prognostic indicators have been unreliable in predicting long-term disability from functional and cognitive impairment. Using genetic predictors like the apolipoprotein E (APOE) genotype will help us with risk stratification and identification of therapeutic targets. We hypothesize that the APOE e4 allele is an independent risk factor for long-term disability after SAH. We will perform a prospective observational study in a cohort of all patients with aneurysmal SAH to examine the relationship between APOE e4 allele and outcome measured by the modified Rankin scale, Barthel Index, and a battery of neuropsychological tests at 3, 6, and 12 months after rupture. Blood collection for genotyping will be obtained after informed consent from routine blood draws during hospitalization. Clinical risk factors will be analyzed using univariate and multivariate statistics. We will create a DNA bank in this rigorously characterized cohort for future genetic studies. The proposed project will take advantage of one of the busiest referral centers for intracranial aneurysms with expertise in genetic and cognitive testing. This research will provide useful information about clinical risk factors for long-term disability and the role of APOE in genetic susceptibility after SAH. Identification of genetic susceptibility from APOE in SAH will provide a clinical model to study other candidate genes that may provide the basis for future treatment strategies. A program of didactic courses and mentoring in this project will build upon the candidate's clinical training, and allow her to develop into an independent clinical investigator in neurovascular neurology.

Agency
National Institute of Health (NIH)
Institute
National Institute of Neurological Disorders and Stroke (NINDS)
Type
Mentored Patient-Oriented Research Career Development Award (K23)
Project #
5K23NS044014-03
Application #
6906421
Study Section
NST-2 Subcommittee (NST)
Program Officer
Golanov, Eugene V
Project Start
2003-06-01
Project End
2008-05-31
Budget Start
2005-06-01
Budget End
2006-05-31
Support Year
3
Fiscal Year
2005
Total Cost
$161,406
Indirect Cost
Name
University of California San Francisco
Department
Neurology
Type
Schools of Medicine
DUNS #
094878337
City
San Francisco
State
CA
Country
United States
Zip Code
94143
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