(HealthDay News) -- Here are the latest clinical trials, courtesy of Thomson CenterWatch:
Alzheimer's Disease
If you are aged 55 to 90, have a caretaker, and have mild-to-moderate Alzheimer's disease, you may qualify for this study.
The research site is in Sun City, Ariz.
More information
Please see http://www.centerwatch.com/patient/studies/cat11.html 
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Brain Cancer
If you are at least 18 and have been diagnosed with primary brain cancer, you may be eligible for this study.
The research site is in New York City.
More information
Please see http://www.centerwatch.com/patient/studies/cat28.html .
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Hepatitis B
If you are a black or Hispanic adult aged 18 to 70 and have been diagnosed with chronic hepatitis B, you may be eligible for this study.
The research site is in Boston, Mass.
More information
Please see http://www.centerwatch.com/patient/studies/cat777.html .
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