Riluzole in Mild Alzheimer's Disease

This study is currently recruiting participants. (see Contacts and Locations)
Verified November 2013 by Rockefeller University
Sponsor:
Information provided by (Responsible Party):
Ana Pereira, MD, Rockefeller University
ClinicalTrials.gov Identifier:
NCT01703117
First received: October 4, 2012
Last updated: November 21, 2013
Last verified: November 2013
  Purpose

Cognitive aging is a major source of disability in an increasingly aging population. The paucity of effective treatments for cognitive aging disorders, and most importantly in Alzheimer's disease instigates a need for further research into novel therapeutic possibilities. Alzheimer's disease is the most common neurodegenerative disorder and its prevalence steeply increases. Glutamate-mediated excitotoxicity in neuropsychiatric disorders and in particular in Alzheimer's disease has been shown to cause significant cerebral damage. Early effective therapeutic intervention in Alzheimer's disease is critical in order to prevent or at least retard neuropathological progression that will lead to widespread irreversible neuronal loss and significant cognitive dysfunction. Riluzole, a glutamate modulator agent that is a proven safe medication and has not yet been used in cognitive aging disorders, will be tested in mild Alzheimer's disease patients. Cognitive functional changes along with two established in vivo biomarkers, namely, Magnetic Resonance Spectroscopy (MRS) and Fluorodeoxyglucose (18F) positron emission tomography (FDG-PET) will be evaluated.


Condition Intervention Phase
Alzheimer's Disease
Drug: Riluzole
Other: Placebo
Phase 2

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Safety/Efficacy Study
Intervention Model: Parallel Assignment
Masking: Double Blind (Subject, Investigator)
Primary Purpose: Treatment
Official Title: Glutamatergic Dysfunction in Cognitive Aging: Riluzole in Mild Alzheimer's Disease

Resource links provided by NLM:


Further study details as provided by Rockefeller University:

Primary Outcome Measures:
  • Imaging Biomarkers N-acetylaspartate (NAA) and FDG-PET values in regions of interest [ Time Frame: Change from baseline at 6 months ] [ Designated as safety issue: No ]
    To determine if after administration of the drug riluzole over 6 months, patients with mild Alzheimer's disease will have in the hippocampus and prefrontal cortex, less decline in the levels of N-acetylaspartate (NAA), a neuronal viability marker (obtained through Magnetic Resonance Spectroscopy-MRS) in comparison to the control group, and a less prominent decline in cerebral metabolism in the regions of interest affected in mild Alzheimer's disease in FDG-PET as compared to the control group.


Secondary Outcome Measures:
  • Cognitive function (neuropsychological tests); Glutamate levels obtained through MRS [ Time Frame: Change from baseline at 3 and 6 months ] [ Designated as safety issue: No ]

Estimated Enrollment: 48
Study Start Date: April 2013
Estimated Study Completion Date: November 2017
Estimated Primary Completion Date: November 2017 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: age matched cohort 60-85 years old
24 subjects between the ages of 60-85 will receive riluzole
Drug: Riluzole
24 subjects between the ages of 60-85 will receive study drug.
Placebo Comparator: 24 subjects between 60-85 years old
24 subjects between 60-85 will receive placebo
Other: Placebo
24 subjects between the ages of 60-85 will receive placebo

Detailed Description:

A double-blinded, randomized, placebo-controlled study will be performed. Forty-eight individuals with a diagnosis of mild Alzheimer's disease between 60-85 years old will complete the study. There will be two cohorts of 60-75 and 75-85 years old that will be age-matched. All forty-eight individuals will have been on donepezil, which is FDA approved for the treatment of Alzheimer's disease, at a dose of 5mg or 10mg per day for at least 3 months prior to consenting and will remain on the drug throughout this study. Twenty-four mild Alzheimer's disease patients will receive riluzole and another 24 will receive a placebo (the placebo tablets will be generated at the Rockefeller University's pharmacy by the research pharmacist). All patients will have a neurological evaluation and neuropsychological tests performed to confirm that they meet criteria for probable Alzheimer's disease set out by the National Institute on Aging - Alzheimer's disease Association that recently revisited the NINCDS-ADRDA criteria and to have mild Alzheimer's disease.

  Eligibility

Ages Eligible for Study:   60 Years to 85 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  • Male or female; 60 - 85 years old with mild Alzheimer's disease determined after neurological and neuropsychological evaluation following the National Institute on Aging - Alzheimer's disease Association criteria that recently revisited the NINCDS-ADRDA criteria. For mild Alzheimer's disease, Clinical Dementia Ratings Scale (CDR) should be 0.5 or 1 and Mini Mental State Examination (MMSS) between 19 and 27.
  • Must be on donepezil (Aricept®) at a consistent dose of 5mg or 10mg per day for at least 3 months
  • Must be fluent in English
  • The subject will appoint or have previously appointed a health care proxy specifically designated for research consent and that this be documented.

Exclusion Criteria:

  • Moderate-Severe Alzheimer's disease and other dementias as determined by neuropsychological testing and neurological evaluation.
  • Previous riluzole treatment.
  • MRI contra-indication (severe claustrophobia, metal implants, shunts, pacemaker, joint implants, metal valves).
  • Currently taking medications that either have evidence of glutamatergic activity or has previous MRS evidence of effects on brain glutamate levels at the discretion of the PI such as memantine, lamotrigine, lithium, opiates, bupropion, psychostimulants such as amphetamines and methylphenidates, tricyclic antidepressants, benzodiazepines and any other drug that the investigators judge might interfere with the study. (subjects on those medications may still be included in the study however only the values of NAA from MRS will be utilized and not the glutamate measurements).
  • Currently a user of the following illicit drugs: cocaine, MDMA ("ecstasy"), heroin and other opioids (as verified by urine drug test) or has a history of drug or alcohol abuse within the past 5 years.
  • Serum creatinine >1.5 times the upper limit of normal.
  • Abnormal liver function test (greater than 2 times the upper limit of normal for alanine aminotranferase (ALT) or aspartate aminotransferase (AST); or bilirubin >1.5 times the upper limit of normal.
  • History of brain disease including Parkinson's Disease, severe brain trauma, seizures, history of stroke,clinically significant lacunar infarct in a region important for cognition or multiple lacunes or a cortical infarct or focal lesions of clinical significance, multiple sclerosis, mental retardation, normal pressure hydrocephalus, CNS tumor, Huntington's disease, subdural hematoma or other serious neurological disorder.
  • Uncontrolled diabetes mellitus (Hba1c higher than 7) or chronically uncontrolled hypertension.
  • Subject must not be taking Namenda® (memantine) for at least 5 months.
  • Currently taking any concomitant hepatotoxic drugs such as allopurinol, methyldopa and sulfasalazine.
  • If subject has been taking Exelon® (rivastigmine), Razadyne® (galantamine), after consenting, the subject would have to wash-out these meds for 3 month before having baseline testing.
  • Any unstable serious co-existing medical condition(s) including but not limited to myocardial infarction, coronary artery disease requiring coronary bypass surgery, unstable angina, clinically evident congestive heart failure within 6 months prior to the screening visit.
  • Current smoker or user of nicotine-containing products, such as chewing tobacco, nicotine patch or gum for the past 2 months.
  • Current major depression defined by Hamilton Psychiatric Rating Scale >18.
  • Participation in any investigational or marketed drug or device trial within 30 days prior to the screening visit.
  • Significant neuropsychiatric illnesses such as bipolar disorder, schizophrenia, moderate-severe anxiety, vascular dementia, Creutzfeldt-Jakob dementia, HIV dementia, and dementia in other specified diseases.
  • Subjects who have been on donepezil for longer than 5 years.
  • Weight> 300 pounds.
  • Lactose intolerance.
  • Any medical or social condition that, in the opinion of the Investigator, might pose additional risk to the participant or confound the results of the study.
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT01703117

Locations
United States, New York
The Rockefeller University Recruiting
New York, New York, United States, 10065
Contact: RU Cares    800-782-2737    RUCares@rockefeller.edu   
Sponsors and Collaborators
Rockefeller University
  More Information

No publications provided

Responsible Party: Ana Pereira, MD, Principal Investigator; Instructor in Clinical Investigation, Rockefeller University
ClinicalTrials.gov Identifier: NCT01703117     History of Changes
Other Study ID Numbers: APE-0792
Study First Received: October 4, 2012
Last Updated: November 21, 2013
Health Authority: United States: Food and Drug Administration

Keywords provided by Rockefeller University:
Alzheimer's Disease
Dementia

Additional relevant MeSH terms:
Alzheimer Disease
Dementia
Brain Diseases
Central Nervous System Diseases
Nervous System Diseases
Tauopathies
Neurodegenerative Diseases
Delirium, Dementia, Amnestic, Cognitive Disorders
Mental Disorders
Riluzole
Anticonvulsants
Central Nervous System Agents
Therapeutic Uses
Pharmacologic Actions
Excitatory Amino Acid Antagonists
Excitatory Amino Acid Agents
Neurotransmitter Agents
Molecular Mechanisms of Pharmacological Action
Physiological Effects of Drugs
Neuroprotective Agents
Protective Agents

ClinicalTrials.gov processed this record on July 31, 2014