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TerminatedNCT00006187Updated Dec 11, 2009

The Safety and Efficacy of an Investigational Drug in Delaying the Progression of Alzheimer's Disease

A Phase 3 interventional study of Investigational drug in Alzheimer Disease, sponsored by Merck Sharp & Dohme LLC. Terminated at 34 sites in United States. Open to participants aged 50 Years and older. Per ClinicalTrials.gov, last updated 2009-12-11.

Sponsored by Merck Sharp & Dohme LLC (part of Merck & Co., Inc) · Phase 3, Interventional, and Treatment

Phase
Phase 3
Study type
Interventional
Allocation
Randomized
Ages
50 Years and older
Sex
All
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Study summary

This is a 15-month study with two phases. During the first 12-month phase of this study, patients will be randomly assigned to receive either active study drug or placebo (approximately half of all patients will be on active study drug, the other half on placebo). The second phase is a 3-month randomized withdrawal period. For this phase approximately 10% of the patients will remain on the active drug.

Read the detailed description

This is a placebo-controlled, parallel-groups, 12 month, double-blind study, followed by a 3-month, double-blind, randomized withdrawal period to evaluate the efficacy and safety of an investigational drug (currently approved for other indications) to slow the progression of symptoms of AD. Patients with probable AD according to NINCDS-ADRDA criteria who have a Mini Mental State Examination (MMSE) score between 13 and 26 inclusive will be eligible for participation in the study.

Patients on stable doses of marketed cholinesterase inhibitors approved for the treatment of AD (except for tacrine) for at least 3 months are eligible for study entry. Use of NSAIDs (except aspirin 81 mg per day) is not allowed during the study.

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Conditions studied

  • Alzheimer Disease

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Keywords

  • Investigational Drug
03

In context

Alzheimer Disease

3,765 studies on the registry are indexed under Alzheimer Disease; 881 are open to participants now.

Browse Alzheimer Disease studies →

Lead sponsor

Merck Sharp & Dohme LLC is the lead sponsor of 2,159 studies on the registry; 133 are open to participants now.

Of its 497 completed or terminated interventional studies of FDA-regulated products, 369 (74%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
50 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Patient is male or female and at least 50 years of age or older
  • Female patients must be postmenopausal or surgically sterilized
  • Clinical diagnosis of AD
  • Patient must be in good health except for AD diagnosis
  • Patient must have informant/caregiver who can monitor and assist patient during the study

Exclusion criteria

Exclusion Criteria:

  • Patient is living in a nursing home or skilled nursing facility
  • Women will be ineligible if not postmenopausal or surgically sterilized
  • Site physician or Sponsor may exclude patients with serious medical problems such as cancer, cardiovascular disease, major neurological or psychiatric illness, thyroid disease, or major head trauma
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Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double

Interventions

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Study locations

34 sites
  • Pivotal Research Centers
    Peoria, Arizona 85381, United States
  • California Clinical Trials
    Beverly Hills, California 90211, United States
  • Pharmacology Research Institute
    Los Alamitos, California 90720, United States
  • Pharmacology Research Institute
    Newport Beach, California 92660, United States
  • Daniel Grosz MD
    Northridge, California 91324, United States
  • Pharmacology Research Institute
    Riverside, California 92506, United States
  • Pacific Research Network
    San Diego, California 92103, United States
  • San Francisco Headache Clinic
    San Francisco, California 94109, United States
  • Yale University, Alzheimer's Disease ResearchUnit
    New Haven, Connecticut 06520-8037, United States
  • New England Center for Headache
    Stamford, Connecticut 06902, United States
  • Baumel-Eisner Neuromedical Institute
    Boca Raton, Florida 33486, United States
  • Baumel-Eisner Neuromedical Institute
    Fort Lauderdale, Florida 33321, United States
  • ICSL Clinical Studies
    Fort Myers, Florida 33907, United States
  • ICSL Clinical Studies
    Melbourne, Florida 32935, United States
  • ICSL Clinical Studies
    Sarasota, Florida 34232, United States
  • ICSL Clinical Studies
    St. Petersburg, Florida 33702, United States
  • Meridien Research
    St. Petersburg, Florida 33710, United States
  • Premiere Research Institute
    West Palm Beach, Florida 33407, United States
  • Palm Beach Neurological Center
    West Palm Beach, Florida 33410, United States
  • Chicago Center for Clinical Research
    Chicago, Illinois 60610, United States
  • ICSL Clinical Studies
    South Yarmouth, Massachusetts 02664, United States
  • Las Vegas Center for Clinical Research
    Las Vegas, Nevada 89146, United States
  • Nathan Klein Institute
    Orangeburg, New York 10962, United States
  • University of Rochester
    Rochester, New York 14620, United States
  • Piedmont Medical Research Associates
    Winston-Salem, North Carolina 27103, United States
  • Pahl Brain Associates, P.C.
    Oklahoma City, Oklahoma 73118, United States
  • Clinical Pharmaceutical Trials
    Tulsa, Oklahoma 74104-5428, United States
  • Pacific NW Clinical Research Center
    Portland, Oregon 97223, United States
  • Institute for Advanced Clinical Research
    Elkins Park, Pennsylvania 19027, United States
  • ICSL Clinical Studies
    Philadelphia, Pennsylvania 19106, United States
  • ICSL Clinical Studies
    East Providence, Rhode Island 02915, United States
  • Pharmacology Research Clinic
    Salt Lake City, Utah 84107, United States
  • Seattle Clinical Research Center
    Seattle, Washington 98104, United States
  • Froedtert Lutheran Memorial Hospital
    Milwaukee, Wisconsin 53226, United States
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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Dec 11, 2009, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT00006187
First posted
Aug 28, 2000
Primary completion
Jun 2005 (estimated)
Completion
Jun 2005 (estimated)
Last update
Dec 11, 2009

Study contacts

Klaus Beck, MD, PhD
principal investigator · Merck Sharp & Dohme LLC
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is terminated, as verified in Oct 2003. You cannot join it, but the record below documents what was studied.

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