12 Week Study of the Safety/Efficacy of Asenapine When Added to Lithium/Valproate in the Treatment of Bipolar Disorder (A7501008 / P05844 / MK-8274-017)

A Phase 3, Randomized, Placebo-Controlled, Double-Blinded Trial Evaluating the Safety and Efficacy of Asenapine in Subjects Continuing Lithium or Valproic Acid/Divalproex Sodium for the Treatment of an Acute Manic or Mixed Episode

This is a 12-week study that will test the safety and efficacy of asenapine when used in addition to lithium or valproate for subjects with acute manic or mixed episodes of Bipolar I Disorder.

Inclusion Criteria:

• Have bipolar I disorder, current episode manic or mixed
• Treated with lithium or valproic acid

Exclusion Criteria:

• Have an unstable medical condition
• Clinically significant laboratory abnormality.
• Have a primary diagnosis other than bipolar I disorder.