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Study Evaluating the Safety,Tolerability, PK and PD of SAM-531 in the Subjects With Mild to Moderate Alzheimer's Disease

This study has been completed.
Information provided by:
Wyeth is now a wholly owned subsidiary of Pfizer Identifier:
First received: May 30, 2007
Last updated: September 28, 2009
Last verified: June 2008
The primary purpose of the study is to assess whether SAM-531, an investigational drug, is safe and well tolerated, compared with placebo (a medically inactive substance), in subjects with mild to moderate Alzheimer's disease.

Condition Intervention Phase
Alzheimer Disease
Drug: SAM-531
Other: placebo
Phase 2

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double Blind (Participant, Care Provider, Investigator, Outcomes Assessor)
Official Title: A Randomized, Double-blind, Placebo-controlled, Safety, Tolerability, Pharmacokinetics (PK), Pharmacodynamics (PD) Trial of Multiple Ascending Fixed Doses of SAM-531 in Subjects With Mild to Moderate Alzheimer's Disease.

Resource links provided by NLM:

Further study details as provided by Wyeth is now a wholly owned subsidiary of Pfizer:

Primary Outcome Measures:
  • Routine safety and tolerability will be evaluated. [ Time Frame: 28 days ]

Secondary Outcome Measures:
  • This study will also investigate the pharmacokinetics(PK, how the drug is metabolized) and pharmacodynamics (PD, how the drug affects bodily and mental function) of SAM-531 compared to placebo. [ Time Frame: 28 days ]

Estimated Enrollment: 72
Study Start Date: June 2007
Study Completion Date: January 2008
Primary Completion Date: January 2008 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: 1 Drug: SAM-531
Placebo Comparator: 2 Other: placebo


Ages Eligible for Study:   50 Years to 90 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria

  1. Signed and dated written informed consent obtained from the subject or the subject`s legally authorized representative (LAR) or next of kin (if applicable), in accordance with the local regulations. The subject`s caregiver must also consent to participate in the study.
  2. Diagnosis of probable Alzheimer's Disease according to National Institute of Neurological and Communicative Disorders and Stroke-Alzheimer's Disease and Related Disorders Association (NINCDS-ADRDA) criteria.
  3. Men and postmenopausal or surgically sterile women aged from 50 to 90 inclusive. Postmenopausal women must have had 12 months of spontaneous amenorrhea. Surgically sterile women are defined as having a hysterectomy, bilateral ovariectomy [oophorectomy], or bilateral tubal ligation. Men who are sexually active will need to agree to use a form of contraception that is satisfactory as per the investigator.
  4. Able to participate in all scheduled evaluations with a high probability of completing all required procedures and neuropsychological tests.

Exclusion Criteria

  1. Significant neurological disease other than Alzheimer's disease, which may affect cognition (eg, epilepsy, Parkinson disease).
  2. Current diagnosis of a major depressive disorder or other major psychiatric symptom according to the criteria of Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition Text Version (DSM-IV-TR).
  3. Current clinically significant systemic illness, which is likely to deteriorate or affect the subject's safety, influence cognitive assessment or ability to complete the study.
  4. Any clinically important deviation from normal limits in physical and neurological examination, vital signs, on electrocardiogram (ECG) or clinical laboratory test results that could compromise the study or be detrimental to the subject.
  Contacts and Locations
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Please refer to this study by its identifier: NCT00481520

United States, Florida
Delray Beach, Florida, United States, 33445
Hallandale, Florida, United States, 33009
St. Petersburg, Florida, United States, 33709
United States, Georgia
Atlanta, Georgia, United States, 30308
United States, New Jersey
Long Branch, New Jersey, United States, 07740
United States, New York
New York, New York, United States, 10032
United States, Vermont
Bennington, Vermont, United States, 05201
Sponsors and Collaborators
Wyeth is now a wholly owned subsidiary of Pfizer
Study Director: Medical Monitor Wyeth is now a wholly owned subsidiary of Pfizer
  More Information

Responsible Party: Wyeth (Registry Contact: Clinical Trial Registry Specialist), Wyeth Identifier: NCT00481520     History of Changes
Other Study ID Numbers: 3193A1-2000
Study First Received: May 30, 2007
Last Updated: September 28, 2009

Additional relevant MeSH terms:
Alzheimer Disease
Brain Diseases
Central Nervous System Diseases
Nervous System Diseases
Neurodegenerative Diseases
Neurocognitive Disorders
Mental Disorders processed this record on April 27, 2017