(HealthDay News) -- Here are the latest clinical trials, courtesy of Thomson CenterWatch:
Acne
Males or females 12 years or older with moderate-to-severe acne may qualify to participate in this study. Participants may not be pregnant, lactating, or plan to become pregnant during the study.
The research site is in West Palm Beach, Fla.
More information
Please see http://www.centerwatch.com/patient/studies/cat1.html 
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Rheumatoid Arthritis
If you are 18 or older, and are living with active rheumatoid arthritis, you may qualify to participate in this clinical study.
The research site is in Sacramento, Calif.
More information
Please see http://www.centerwatch.com/patient/studies/cat132.html .
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Esophageal Cancer
You may qualify for this study if you are 18 to 85 years old and have Barrett's esophagus. You will not be eligible if you have intestinal metaplasia of the cardia (without an esophageal columnar lining), or if you are unable to have endoscopic medical procedures.
The research site is in Paramus, N.J.
More information
Please see http://www.centerwatch.com/patient/studies/cat163.html .
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