(HealthDay News) -- Here are the latest clinical trials, courtesy of Thomson CenterWatch:
Breast Cancer
If you are female, at least age 18, have HER2-positive breast cancer, and have had a total mastectomy or breast conserving surgery, you may qualify for this study.
The research site is in Valencia, Calif.
More information
Please see http://www.centerwatch.com/patient/studies/cat29.html 
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Rheumatoid Arthritis
If you are at least 18, have active rheumatoid arthritis, and have had an inadequate response to any DMARD other than methotrexate, you may qualify for this study.
The research site is in East Norriton, Penn.
More information
Please see http://www.centerwatch.com/patient/studies/cat132.html .
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Insomnia
If you are at least 18, have a lifetime history of at least one bipolar manic or mixed episode, and have had a bipolar I depressive episode in the past six months, you may qualify for this study.
The research site is in Clementon, N.J.
More information
Please see http://www.centerwatch.com/patient/studies/cat189.html .
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