A Study of the Safety and Efficacy of Memantine in Moderate to Severe Alzheimer's Disease

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00322153
Recruitment Status : Completed
First Posted : May 5, 2006
Results First Posted : September 16, 2010
Last Update Posted : September 16, 2010
Information provided by:
Forest Laboratories

May 3, 2006
May 5, 2006
July 20, 2010
September 16, 2010
September 16, 2010
June 2005
October 2007   (Final data collection date for primary outcome measure)
  • Change From Baseline in Severe Impairment Battery (SIB) at Week 24 (LOCF) [ Time Frame: Baseline to week 24 ]
    The SIB was developed for the evaluation of cognitive function in patients with more advanced dementia, and evaluates the areas of memory, language, praxis, orientation, and attention. The SIB test items consist of simple, one-step commands presented with gestural cues that are repeated if necessary. The test contains 51 items, and the range of possible scores is 0 to 100 (with 0 being the worst result). The SIB has been shown to be a valid and reliable instrument sensitive to longitudinal change.
  • Clinician's Interview-Based Impression of Change With Caregiver Input (CIBIC-plus) at Week 24 (LOCF) [ Time Frame: Week 24 ]
    The CIBIC-Plus is a measure of an overall clinical effect and is based on a comprehensive evaluation at Baseline and later visits of four domains: general (overall clinical status), functional (including activities of daily living), cognitive, and behavioral. A skilled clinician interviews the patient, and includes information supplied by a knowledgeable caregiver. The CIBIC-Plus is a rating of the patient's global status relative to Baseline, ranging from a score of 1, indicating "marked improvement" to a score of 4, indicating "no change" to a score of 7, indicating "marked worsening."
  • Sever Impairment Battery (SIB)
  • Clinician's Interview Based Impression of Change - Plus Version (CIBIC-Plus)
Complete list of historical versions of study NCT00322153 on Archive Site
Change From Baseline in the 19-Item Alzheimer's Disease Cooperative Study-Activities of Daily Living (ADCS-ADL19) Scale at Week 24 (LOCF) [ Time Frame: Baseline to week 24 ]
The ADCS-ADL19 modified inventory consists of 19 items used to measure the functional capabilities of patients with moderate to severe dementia. Each activity-of-daily-living (ADL) item comprises a series of hierarchical subquestions ranging from the highest level of independent performance to complete loss of ability to perform the ADL Inventory. The inventory is performed by interviewing a person in close contact with the patient and covers the most usual and consistent performance of the patient over the preceding 4 weeks. Response range is 0 (total disability) to 54 (total independence).
  • Neuropsychiatric Inventory (NPI)
  • Alzheimer's Disease Cooperative Study - Activities of Daily Living Inventory (ADCS-ADL)
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Not Provided
A Study of the Safety and Efficacy of Memantine in Moderate to Severe Alzheimer's Disease
A Randomized, Double-Blind, Placebo-Controlled Evaluation of the Safety and Efficacy of Memantine in Patients With Moderate-to-Severe Dementia of the Alzheimer's Type
The objective of this study is to evaluate the safety, tolerability, and efficacy of memantine compared to placebo in outpatients diagnosed with moderate-to-severe dementia of the Alzheimer's type on a concurrent acetylcholinesterase inhibitor (AChEI).
Memantine is a therapeutic agent that represents a unique class of Alzheimer's disease (AD) treatment options. A once daily (QD) dosing regimen in an AD population would simplify administration for the caregiver. The purpose of this study is to evaluate the safety and efficacy of modified release memantine taken once daily in outpatients with moderate-to-severe AD on a concurrent AChEI.
Phase 3
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)
Primary Purpose: Treatment
Dementia of the Alzheimer's Type
  • Drug: memantine ER
    28mg(7mg capsules) once daily and oral administration for 24 weeks.
    Other Name: Namenda XR
  • Drug: Placebo
    Matching placebo oral administration once daily.
  • Placebo Comparator: Placebo
    Oral administration, once daily.
    Intervention: Drug: Placebo
  • Active Comparator: Memantine ER
    28mg, once daily. Oral administration for 24 weeks.
    Intervention: Drug: memantine ER
Not Provided

*   Includes publications given by the data provider as well as publications identified by Identifier (NCT Number) in Medline.
January 2008
October 2007   (Final data collection date for primary outcome measure)

Inclusion Criteria:

  • Ambulatory patients aged >/= 50 years
  • Diagnostic evidence of probable Alzheimer's disease consistent with criteria from the National Institute of Neurological and Communicative Disorders and Stroke-Alzheimer's Disease and Related Disorders Association (NINCDS-ADRDA) and the Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, Text Revision (DSM-IV-TR)
  • Confirmatory magnetic resonance imaging (MRI) or computed tomographic (CT) scan within the prior 12 months.
  • Mini-Mental State Examination (MMSE) scores >/= 3 and </= 14 at Screening (Visit 1) and Baseline (Visit 2)
  • Ongoing daily acetylcholinesterase inhibitor (AChEI) therapy at a stable dose for at least 3 months prior to Screening (Visit 1). It is preferred that patients continue to receive the same AChEI therapy for the duration of the study.

Exclusion Criteria:

  • Patients with a modified Hachinski Ischemia Score greater than 4 at Screening.
  • Patients who have taken memantine within one month of Screening (Visit 1)
  • Patients who have a known hypersensitivity to memantine, neramexane, rimantadine, or amantadine.
  • Patients whose AChEI therapy is likely to be interrupted or discontinued during the course of the study.
  • Patients who are receiving therapy with more than one AChEI.
  • Patients with computed tomography (CT) or magnetic resonance imaging (MRI) evidence of hydrocephalus, stroke, a space-occupying lesion, cerebral infection, or any clinically significant central nervous system disease other than Alzheimer's disease.
  • Patients with a DSM-IV Axis I disorder other than Alzheimer's disease, including amnestic disorders, schizophrenia or schizoaffective disorder, bipolar disorder, current major depressive episode, psychosis, panic, or post-traumatic stress disorder.
  • Patients who, in the clinician's judgement, are likely to be placed in a nursing home within the next 6 months.
  • Patients who had evidence of other neurological disorders that included, but were not limited to, stroke, Parkinson's disease, seizure disorder, or head injury with loss of consciousness within the prior 5 years
  • Patients who had dementia that was complicated by other organic disease
  • Patients who had dementia complicated by the presence of predominant delusions
Sexes Eligible for Study: All
50 Years and older   (Adult, Senior)
Contact information is only displayed when the study is recruiting subjects
Argentina,   Chile,   Mexico,   United States
Not Provided
Not Provided
Stephen M Graham, PhD, Senior Director, Clinical Development, Neurology, Forest Research Institute, a subsidiary of Forest Laboratories, Inc
Forest Laboratories
Not Provided
Study Director: Stephen M Graham, PhD Forest Laboratories
Forest Laboratories
August 2010

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP