(HealthDay News) -- Here are the latest clinical trials, courtesy of Thomson CenterWatch:
Lower Back Pain
This study will evaluate the effectiveness of an investigational drug for chronic low back pain that has persisted for at least three months. Participants must be 18 or older.
The research site is in Toledo, Ohio.
More information
Please see http://www.centerwatch.com/patient/studies/cat700.html 
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Brain Tumor
Candidates for this study must be 18 or older and have been diagnosed with malignant glioma.
The research site is in New York City.
More information
Please see http://www.centerwatch.com/patient/studies/cat581.html .
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Weight Loss
This study will evaluate the effectiveness of an investigational weight-loss drug. You may qualify if your body mass index (BMI) is 27 or greater.
The research site is in Toledo, Ohio.
More information
Please see http://www.centerwatch.com/patient/studies/cat706.html .
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