A Study to Evaluate the Efficacy and Safety of Galantamine in Patients With Mild Cognitive Impairment

A Randomized Double-Blind Placebo-Controlled Trial to Evaluate the Efficacy and Safety of Galantamine in Patients With Mild Cognitive Impairment (MCI) Clinically at Risk for Development of Clinically Probable Alzheimer's Disease

The purpose of this study is to evaluate the efficacy and safety of galantamine treatment in patients with mild cognitive impairment.

Study Overview

Status

Completed

Intervention / Treatment

Detailed Description

This is an international, multicenter, double-blind, randomized, placebo-controlled trial. Patients with mild cognitive impairment (MCI) who are clinically at risk for development of Alzheimer's disease will be treated for 24 months with either placebo or galantamine hydrobromide. Memory and overall clinical improvement will be evaluated using the Alzheimer's Disease Assessment Scale with cognitive subscale adapted to MCI (ADAS-cog/MCI) and the Clinical Dementia Rating Sum of the Boxes (CDR-SB). Overall functional skills and the severity of dementia will be assessed with the Clinical Dementia Rating Sum of the Boxes (CDR-SB) and the overall Clinical Dementia Rating (CDR) score. Additional assessments include the Digit Symbol Substitution Test (DSST) to measure attention. Safety will be assessed using adverse event reports, vital signs, laboratory parameters, physical examination, and electrocardiogram. The study hypothesis is that treatment with galantamine will be well tolerated and, compared with placebo, will significantly improve the signs and symptoms associated with mild cognitive impairment in patients who are considered likely to develop Alzheimer's disease. Galantamine hydrobromide immediate-release tablets (4, 8, or 12 milligrams), taken by mouth 2 times daily: 8mg/day for 4 weeks, 16mg/day for 4 weeks, then increased to 24mg/day for the remainder of the 24-month trial. Doses may be reduced at investigator's discretion after 12 weeks.

Study Type

Interventional

Enrollment (Actual)

1063

Phase

  • Phase 3

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

50 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Clinical decline of cognitive ability consistent with mild cognitive impairment
  • Delayed recall score <= 10 on a New York University paragraph recall test
  • Sufficient visual, hearing and communication capabilities and be willing to complete serial standard tests of cognitive function
  • Have a consistent informant to accompany them on scheduled visits
  • Be able to read, write and fully understand the language of the cognitive scales used in the study

Exclusion Criteria:

  • Neurodegenerative disorders such as Parkinson's disease
  • Cognitive impairment resulting from acute cerebral trauma, hypoxic cerebral damage, vitamin deficiency states, infections such as meningitis or AIDS, or primary or metastatic cerebral neoplasia
  • Epilepsy
  • Significant psychiatric disease
  • Peptic ulcer disease
  • Clinically significant heart, lung, liver or kidney diseases
  • Pregnant or nursing women or those without adequate contraception

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Double

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Memory and cognition (ADAS-COG/MCI and CDR-SB scores), global functional skills and overall severity of dementia (the CDR-SB and the overall Clinical Dementia Rating) measured at 12 and 24 months.

Secondary Outcome Measures

Outcome Measure
Digit Symbol Coding and Alzheimer's Disease Cooperative Study-ADL scale (MCI version) at 12 and 24 months. Safety assessment (reports of adverse events, laboratory values, results of physical examinations, and electrocardiograms) throughout the study.

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

May 1, 2001

Study Completion (Actual)

December 1, 2003

Study Registration Dates

First Submitted

October 7, 2005

First Submitted That Met QC Criteria

October 7, 2005

First Posted (Estimate)

October 12, 2005

Study Record Updates

Last Update Posted (Estimate)

June 8, 2011

Last Update Submitted That Met QC Criteria

June 6, 2011

Last Verified

November 1, 2010

More Information

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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