Efficacy and Safety of Ramelteon in Subjects With Mild to Moderate Alzheimer's Disease

This study has been completed.
Sponsor:
Information provided by (Responsible Party):
Takeda
ClinicalTrials.gov Identifier:
NCT00325728
First received: May 11, 2006
Last updated: February 27, 2012
Last verified: February 2012
  Purpose

The purpose of this study is to determine the efficacy of ramelteon, once daily (QD), in subjects with mild to moderate Alzheimer's Disease and sleep disturbance


Condition Intervention Phase
Chronic Insomnia
Drug: Ramelteon
Drug: Placebo
Phase 2

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Safety/Efficacy Study
Intervention Model: Parallel Assignment
Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor)
Primary Purpose: Treatment
Official Title: A Double-Blind, Randomized, Placebo-Controlled Study of the Efficacy, Safety and Tolerability of 8 Week Treatment of Rozerem 8 mg (QHS) in Sleep Disturbed, Mild to Moderately Severe Alzheimer's Disease Subjects

Resource links provided by NLM:


Further study details as provided by Takeda:

Primary Outcome Measures:
  • Mean Nighttime Total Sleep Time as determined by actigraphy. [ Time Frame: Week 1 ] [ Designated as safety issue: No ]

Secondary Outcome Measures:
  • Change from Baseline in Nighttime Total Sleep Time [ Time Frame: Weeks 2, 4, 6, and 8 or Final Visit ] [ Designated as safety issue: No ]
  • Change from Baseline in Nighttime Wake After Sleep Onset per Actigraphy [ Time Frame: Weeks 2, 4, 6, and 8 or Final Visit ] [ Designated as safety issue: No ]
  • Change from Baseline in Nighttime Number Of Awakenings per Actigraphy [ Time Frame: Weeks 2, 4, 6, and 8 or Final Visit ] [ Designated as safety issue: No ]
  • Change from Baseline in Daytime Total Sleep Time [ Time Frame: Weeks 2, 4, 6, and 8 or Final Visit ] [ Designated as safety issue: No ]
  • Change from Baseline in the ratio of Daytime Total Sleep Time to Nighttime Total Sleep Time. [ Time Frame: Weeks 2, 4, 6, and 8 or Final Visit ] [ Designated as safety issue: No ]
  • Change from Baseline in Sleep Efficiency. [ Time Frame: Weeks 2, 4, 6, and 8 or Final Visit ] [ Designated as safety issue: No ]
  • Percentage of subjects who experience Increase in Nighttime Total Sleep Time of 30 minutes. [ Time Frame: Weeks 2, 4, 6, and 8 or Final Visit ] [ Designated as safety issue: No ]
  • Number of Daytime Naps. [ Time Frame: Weeks 2, 4, 6, and 8 or Final Visit ] [ Designated as safety issue: No ]

Enrollment: 74
Study Start Date: March 2006
Study Completion Date: August 2007
Primary Completion Date: August 2007 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Ramelteon 8 mg QD Drug: Ramelteon
Ramelteon 8mg, tablets, orally, once nightly for up to 8 weeks.
Other Names:
  • TAK-375
  • Ramelteon
  • Rozerem
Placebo Comparator: Placebo Drug: Placebo
Ramelteon placebo matching tablets, orally, once nightly for up to 8 weeks.

Detailed Description:

Epidemiological data for 2005 show that an estimated 4.2 million people in the US suffer from Alzheimer's disease, often necessitating caregiver assistance, which can in many cases progress to institutionalization. Subjects with Alzheimer's disease dementia frequently experience disturbed sleep patterns characterized by insufficient nocturnal sleep and excessive daytime napping, which has been associated with both cognitive and behavioral pathology such as impaired daytime functioning, agitation, and nocturnal wandering.

Although the causality of sleep disturbances in Alzheimer's disease remains unclear; some research suggests that the fragmented sleep and associated behavioral disturbances could be related to the degeneration of the serotonergic and noradrenergic innervation of suprachiasmatic nucleus andsubsequent disruption in melatonin secretion patterns. Additionally, research suggests that melatonin levels are decreased in patients with Alzheimer's disease

In the United States, ramelteon is marketed for the treatment of insomnia characterized by difficulty with sleep onset and is under global development for the treatment of transient, chronic insomnia and circadian rhythm sleep disorders. It is believed that ramelteon works by binding melatonin to MT1/MT2 receptors in the suprachiasmatic nucleus which inhibits firing of specific neurons, which is thought to attenuate the alerting signal and allows the homeostatic mechanism to express itself and promote sleep.

Study participation is anticipated to be about 11 weeks (approximately 3 months).

  Eligibility

Ages Eligible for Study:   55 Years and older
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria

  • Clinical diagnosis of dementia of the Alzheimer's type (Diagnostic and Statistical Manual of Mental Disorders, 4th Edition Revised) or probable Alzheimer's disease by National Institute of Neurological and Communicative Disorders and Stroke/the Alzheimer's Disease and Related
  • Disorders Association criteria.
  • Female subjects must be post-menopausal.
  • Stable residence with no planned move during the entire investigation period.
  • Residing in the same residence with a responsible spouse, family member, or a professional caregiver who is present during the night who would agree to assume the role of the principal caregiver for the duration of the protocol period.
  • Able to ingest oral medication and participate in all scheduled evaluations.
  • Clinical laboratory evaluations (including clinical chemistry, hematology, and urinalysis) within the reference range as tested by the designated laboratory unless the results are deemed not clinically significant by the investigator or sponsor.
  • Treatment medications for any non-excluded medications or concurrent medical conditions are stable for 30 days prior to the screening visit and medication(s) can in the investigator's judgment, remain stable throughout the duration of the study.
  • Mini-Mental State Examination score of 8 to 28, inclusive.
  • History of greater than or equal to 2 sleep disorder behaviors, occurring at least once weekly over the two weeks before screening.
  • Actigraphy evidence shows a nighttime total sleep time of less than 7 hours per night based on at least 4 out of 7 nights of complete actigraphy data collected over the single-blind, placebo run-in period.
  • Habitual bedtime of between 8 PM and 12 AM.

Exclusion Criteria

  • Non-ambulatory, wheel chair bound or confined to bed and is without a consistent caregiver who is present during the night who could function as the primary caregiver.
  • Caregiver is deemed by the investigator to be unreliable to supervise the wearing of the actigraphy, to complete the sleep log, to administer medication at the proper time, to bring the subject to the scheduled visits or to answer questions regarding the subject's condition or medication use.
  • Lacks a mobile upper extremity to which to attach an actigraphy.
  • Currently participating or has participated in another clinical study within the past 30 days.
  • Demonstrates an unwillingness to abstain from caffeine after 2:00 PM for the duration of the clinical trial participation.
  • Demonstrates an unwillingness to comply with the maximum limit of two alcoholic drinks per day and only one alcoholic drink after 6:00 PM for the duration of the protocol.
  • Uses tobacco products or any other products during nightly awakenings that may interfere with the sleep wake cycle.
  • History of drug abuse or tests positive for the presence of illicit drugs.
  • Donated more than 400 mL of blood within the 90 days preceding the beginning of the study.
  • Diastolic blood pressure greater than 95 mm Hg or a systolic pressure of greater than 160 mm Hg.
  • Body mass index of greater than 36.
  • Alanine transaminase level of greater than two times the upper limit of normal, active liver disease, jaundice or any clinically significant abnormal laboratory findings as determined by the investigator.
  • History of a hypersensitivity or allergies to Ramelteon or melatonin.
  • History of contraindications as noted in the Ramelteon label
  • History of significant stroke or vascular dementia.
  • History of severe renal dysfunction or disease.
  • History of cancer, other than basal cell carcinoma, that has not been in remission for at least 5 years prior to the first dose of study drug. (This criterion does not include those subjects with basal cell or Stage 1 squamous cell carcinoma of the skin.)
  • Any clinically significant movement disorder including but not limited to: akinesia, periodic limb movement disorder, restless leg syndrome, epilepsy, uncontrolled Parkinson's disease, or severe benign prostatic hyperplasia, cardiac asthma, chronic obstructive pulmonary disease.
  • Rapid eye movement behavior disorder or sleep apnea.
  • Any pain syndrome affecting sleep.
  • Is required to take or continues taking any disallowed medication, prescription medication, herbal treatment or over-the counter medication that may interfere with evaluation of the study medication, including:

    • Fluvoxamine
    • Melatonin
    • Rifampicin
  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: NCT00325728

  Show 72 Study Locations
Sponsors and Collaborators
Takeda
Investigators
Study Director: Medical Director Clinical Science Takeda Global Research and Development
  More Information

Additional Information:
No publications provided

Responsible Party: Takeda
ClinicalTrials.gov Identifier: NCT00325728     History of Changes
Other Study ID Numbers: 01-05-TL-375-061, 2004-004351-20, U1111-1115-1644
Study First Received: May 11, 2006
Last Updated: February 27, 2012
Health Authority: United States: Food and Drug Administration

Keywords provided by Takeda:
Chronic Insomnia
Sleep Initiation and Maintenance Disorder
Drug Therapy
Alzheimer disease

Additional relevant MeSH terms:
Alzheimer Disease
Sleep Initiation and Maintenance Disorders
Dementia
Brain Diseases
Central Nervous System Diseases
Nervous System Diseases
Tauopathies
Neurodegenerative Diseases
Delirium, Dementia, Amnestic, Cognitive Disorders
Mental Disorders
Sleep Disorders, Intrinsic
Dyssomnias
Sleep Disorders

ClinicalTrials.gov processed this record on August 27, 2014