Conditions: Schizophrenia
Keywords: schizophrenia, LY2140023, pomaglumetad methionil
Allocation: RANDOMIZED | Intervention model: PARALLEL
Enrollment: 123
Healthy volunteers: no

Brief summary:
The purpose of this study is to determine whether or not people with schizophrenia who take LY2140023 become physically dependent on it, and experience a series of symptoms such as craving to have the drug when they stop using it.

This trial consists of two phases: An open-label phase consisting of up to 4 weeks and a double-blind phase consisting of up to 3 weeks.

Detailed description:
This was a short-term, multicenter, placebo-controlled, randomized withdrawal study comparing LY2140023 with placebo in the treatment of outpatients with Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, Text Revision (DSM-IV-TR \[APA 2000\]) schizophrenia. Patients were male or female outpatients, 18 to 65 years of age (inclusive) at study entry, with a diagnosis of schizophrenia as defined in the DSM-IV-TR

The primary objective of this study was to assess whether LY2140023, when administered in an acute-treatment trial with flexible doses (40 mg or 80 mg) BID, was associated with physical dependence, as measured by the occurrence of withdrawal symptoms during a randomized withdrawal phase in patients diagnosed with schizophrenia. Assessment was to be based on a comparison of randomized LY2140023-treated patients with those on placebo, as measured by the maximum of the 3-day moving average of the patient's total score on the Discontinuation Symptom Checklist-Modified Rickels (DSCMR).

Arms:
arm 1: Open label phase: 40 milligram (mg) LY2140023 administered orally; given twice daily for up to 4 weeks. At the discretion of the investigator, dose may be adjusted one time to 80 mg. 80 mg dose may be adjusted back to 40 mg one time. Current dose level at randomization will remain constant through the double blind phase.

Double blind phase: 40 mg or 80 mg LY2140023 administered orally; given twice daily for up to 3 weeks. arm 2: Open label phase: 40 mg LY2140023 administered orally; given twice daily for up to 4 weeks. At the discretion of the investigator, dose may be adjusted one time to 80 mg. 80 mg dose may be adjusted back to 40 mg one time.

Double blind phase: placebo administered orally; given twice daily for up to 3 weeks.

Interventions: intervention 1: LY2140023 intervention 2: Placebo
Intervention descriptions: intervention 1: Administered orally intervention 2: Administered orally

Protocol document: