Memantine Augmentation of Lamotrigine Incomplete-Response in Bipolar Depression

Bipolar Depression Clinical Trial

Official title:

Memantine Augmentation of Lamotrigine Incomplete Response in Bipolar Depression: A Randomized Placebo Controlled Clinical Trial

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT00305578
• Other study ID #: 0501-43
• Status: Completed
• Phase: Phase 4
• First received: September 14, 2005
• Last updated: October 2, 2015
• Start date: August 2005
• Est. completion date: December 2011

Study information

• Verified date: October 2015
• Source: Indiana University
• Contact: n/a
• Is FDA regulated: No
• Health authority: United States: Food and Drug Administration
• Study type: Interventional

Clinical Trial Summary

The purpose of this study is to investigate whether addition of memantine to bipolar depression patients who have had an incomplete response to lamotrigine (Lamictal) which is frequently used to treat bipolar depression in the clinical setting. At present, memantine is approved for use in the treatment of Alzheimer's disease or dementia, but not for use for the treatment of bipolar depression. Subjects will be asked to participate because they are suffering from bipolar depression associated and have had an inadequate response to lamotrigine. Subjects will have to be on at least 100 mg per day, for at least 4 weeks.

Description:

Hypothesis/Objectives:

H1: Lamotrigine inadequate-response patients augmented with memantine for 8 weeks will have significantly greater improvement on the Hamilton Depression Rating Scale (HDRS) and Clinical Global Improvement (CGI) scale compared to patients augmented with placebo.

H2: Lamotrigine inadequate-response patients augmented with memantine for 8 weeks will have significantly greater improvement of scores on the Selective Reminding Test (SRT), the Digit Span Test, the Stroop Test, and Trail Making Test (TMT) than patients augmented with placebo.

Study Population:

We will study 40 bipolar disorder depressed (BDD) outpatients (20 in each arm) recruited from the outpatient Mood Disorders Clinic and by advertisement.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 29
• Est. completion date: December 2011
• Est. primary completion date: December 2010
• Accepts healthy volunteers: No
• Gender: Both
• Age group: 18 Years to 65 Years

Eligibility

Inclusion Criteria:: 1) age 18 - 65; 2) satisfy DSM-IV-TR criteria for Bipolar Disorder and Major Depressive Episode; 3) Lamotrigine Inadequate-Response: Defined as already treated with at least 100 mg of lamotrigine for at least 4 weeks but 17 item HDRS rating > 15; 4) give informed consent as approved by local IRB; 5) if on other antidepressants or mood stabilizers on stable dose for the past 4 weeks.

Exclusion Criteria:1) comorbid psychotic disorder such as schizophrenia or schizoaffective disorder; 2) significant suicidal or homicidal risk; 3) clinically significant medical illness; 4) allergy or intolerance to lamotrigine or memantine; 5) pregnancy, planning to be pregnant or not using adequate contraception; 6) satisfy criteria for substance dependence within 6 months prior to start of the study; and 7) on any medication with significant adverse interaction with either lamotrigine or memantine.

Study Design

Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Caregiver, Investigator), Primary Purpose: Treatment

Related Conditions & MeSH terms

• Bipolar Depression
• Bipolar Disorder
• Depression
• Depressive Disorder

Intervention

Drug:
• Memantine
Memantine will be given orally. Subjects will be started at a dose of 5 mg for the first week and then increased by 5 mg every week up to a maximum of 20 mg depending on response and tolerance and will be kept at that level for the rest of the study. This is an 8 week study.
• Placebo
No active medication, only placebo

Locations

Country	Name	City	State
United States	Indiana University Adult Psychiatric Clinic	Indianapolis	Indiana

Sponsors (1)

Lead Sponsor	Collaborator
Indiana University School of Medicine

Country where clinical trial is conducted

United States, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Change in 17-item Hamilton Depression Rating Scale From Baseline to 8 Weeks (Baseline - 8 Wks)	Scale for measurement of depression severity. Total of scale is used. Total range is from 0 - 50 with higher score signifying higher severity of depression. Outcome measure is change in score from baseline to 8 wks.	8 weeks	No