Investigation Into Delay to Diagnosis of Alzheimer's Disease With Exelon (InDDEx)
1 other identifier
interventional
N/A
1 country
15
Brief Summary
This phase IIIb trial is a prospective, randomized, double-blind, placebo-controlled, 36-month study comparing the length of time of progression from mild cognitive impairment (MCI) to a clinical diagnosis of Alzheimer's disease (AD) in subjects taking Exelon vs. placebo. Exelon is currently under review with the U.S. Food and Drug Administration as a treatment for Alzheimer's disease. The drug has been cleared for marketing in more than 40 countries for Alzheimer's disease to date, including all 15 member states of the European Union, New Zealand, Argentina, Brazil and Mexico. Each subject with MCI will be randomly assigned to treatment with either Exelon or placebo. Subjects assigned to Exelon will receive 1.5 to 6.0 mg bid (twice daily) (3.0 to 12 mg/day) for the majority of the study. At every regular visit scheduled every three months, patients will be given basic efficacy and safety assessments. These assessments will include evaluation of adverse events, vital signs, activities of daily living, and clinical staging scales to determine if the subject may have converted to dementia.
Trial Health
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15 active sites
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Trial Relationships
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Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
October 29, 1999
CompletedFirst Posted
Study publicly available on registry
November 1, 1999
CompletedJune 24, 2005
January 1, 2000
October 29, 1999
June 23, 2005
Conditions
Keywords
Interventions
Eligibility Criteria
You may qualify if:
- Are aged 55-85 years, inclusive. Subjects older than 85 years may be eligible to participate, with approval of the designated study medical monitor.
- Are male or female without child-bearing potential (i.e., surgically sterilized \[via bilateral tubal ligation,bilateral oophorectomy, or hysterectomy\], at least one year postmenopausal, or using adequate birth control).
- Are cooperative, able to ingest oral medication, and willing to complete all aspects of the study.
- Will provide written informed consent prior to their participation in the study.
- Show evidence of mild cognitive impairment (MCI) by meeting all of the following criteria: Global CDR score = 0.5, NYU Delayed Paragraph Recall less than 9, 17-item HAM-D score less than 13, and HAM-D Item 1 (depressed mood) score =1.
- Have a friend or family member who is willing to participate in the study as an informant. The informant must see the subject at least once a week for several hours and be available to accompany the subject to the screening and baseline visits, and at a minimum, be accessible by telephone for other scheduled visits.
You may not qualify if:
- Advanced, severe, and unstable disease of any type that may interfere with primary and secondary variable evaluations including any medical condition that could be expected to progress, recur, or change to such an extent that it may bias the assessment of the clinical or mental status of the subject to a significant degree or put the subject at special risk.
- Cognitive impairment sufficient to warrant a diagnosis of dementia.
- Met the DSM-IV and NINCDS-ADRDA criteria for AD.
- A clinical diagnosis of AD.
- A DSM-IV Axis 1 diagnosis. However, subjects with current depression are eligible after appropriate treatment of the depressive episode. A minimum of four weeks washout of antidepressant medication should occur prior to screening. Subjects with a prior history of depression (but not currently depressed) are allowed in the study.
- Fewer than four years of formal education.
- A documented history of transient ischemic attacks.
- Baseline MRI findings or CT-scan findings within a year of screening that are consistent with a process other than AD, e.g., stroke, tumor, brain trauma or hydrocephalus, that may contribute to the subject's MCI. Lacunae infarcts present in areas affecting cognition (entorhinal cortex, hippocampus, medial temporal lobe) will also exclude the subject from the study.
- A score of greater than 4 on the Modified Hachinski Ischemic Scale.
- A current diagnosis of any primary neurodegenerative disorder, e.g., Parkinson's disease.
- A current diagnosis of uncontrolled seizure disorder.
- A current diagnosis of active peptic ulceration.
- A current diagnosis of severe and unstable cardiovascular disease.
- A current diagnosis of sick-sinus syndrome or conduction deficits (sino-atrial block, second or third degree atrio-ventricular block).
- A current diagnosis of acute, severe, or unstable asthmatic conditions.
- +9 more criteria
Contact the study team to confirm eligibility.
Sponsors & Collaborators
- Novartislead
Study Sites (15)
Medici Research Centers
Peoria, Arizona, 85381, United States
University of California, Irvine
Orange, California, 92868, United States
University of Colorado Health Sciences Center
Denver, Colorado, 80220, United States
Neuromedical Research Institute (Offices in Ft. Lauderdale, Miami Beach and Boca Raton)
Fort Lauderdale, Florida, 33321, United States
Miami Research Associates
Miami, Florida, 33176, United States
Center for Clinical Trials and Research
Venice, Florida, 34285, United States
Indiana University Alzheimer's Center
Indianapolis, Indiana, 46202, United States
St. Louis University
St Louis, Missouri, 63104, United States
Alzheimer's Research Corporation
Lakewood, New Jersey, 08701, United States
NYU Medical Center
New York, New York, 10016, United States
Duke University Medical Center
Durham, North Carolina, 27710, United States
Pahl Brain Associates, P.C.
Oklahoma City, Oklahoma, 73118, United States
Clinical Studies, Ltd., Philadelphia
Philadelphia, Pennsylvania, 19106, United States
St. Paul Medical Center
Dallas, Texas, 75235, United States
University of Washington, Seattle
Seattle, Washington, 98108, United States
Related Publications (1)
Feldman HH, Ferris S, Winblad B, Sfikas N, Mancione L, He Y, Tekin S, Burns A, Cummings J, del Ser T, Inzitari D, Orgogozo JM, Sauer H, Scheltens P, Scarpini E, Herrmann N, Farlow M, Potkin S, Charles HC, Fox NC, Lane R. Effect of rivastigmine on delay to diagnosis of Alzheimer's disease from mild cognitive impairment: the InDDEx study. Lancet Neurol. 2007 Jun;6(6):501-12. doi: 10.1016/S1474-4422(07)70109-6.
PMID: 17509485DERIVED
Related Links
MeSH Terms
Conditions
Interventions
Condition Hierarchy (Ancestors)
Intervention Hierarchy (Ancestors)
Study Officials
- PRINCIPAL INVESTIGATOR
Steven Ferris, PhD
NYU Langone Health
Study Design
- Study Type
- interventional
- Phase
- phase 3
- Allocation
- RANDOMIZED
- Masking
- DOUBLE
- Purpose
- TREATMENT
- Sponsor Type
- INDUSTRY
Study Record Dates
First Submitted
October 29, 1999
First Posted
November 1, 1999
Last Updated
June 24, 2005
Record last verified: 2000-01