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Breast Cancer Drug Tames Acute Mania in Bipolar Disorder

(PSYCHIATRIC TIMES) - MedPage Today Action Points

o Explain to interested patients that the findings for tamoxifen and mania in this small, short, pilot study must still be replicated in a large controlled trial.

BETHESDA, Md., Sept. 12 -- Tamoxifen significantly decreased symptoms of acute mania beginning as early as five days in patients with bipolar disorder in a small pilot study.

The drug, approved to treat breast cancer, maintained its effect throughout a three-week trial with a response rate of 63% for tamoxifen versus 13% for placebo, Carlos A. Zarate, Jr., M.D., of the National Institute of Mental Health, and colleagues reported online in the Sept. issue of Bipolar Disorders.

Tamoxifen is a relatively selective protein kinase C inhibitor with the advantage that it crosses the blood-brain barrier, the researchers wrote.

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