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Study Evaluating Intepirdine (RVT-101) in Subjects With Mild to Moderate Alzheimer's Disease on Donepezil: MINDSET Study

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ClinicalTrials.gov Identifier: NCT02585934
Recruitment Status : Completed
First Posted : October 26, 2015
Results First Posted : December 5, 2018
Last Update Posted : December 5, 2018
Sponsor:
Information provided by (Responsible Party):
Axovant Sciences Ltd.

Brief Summary:
This study seeks to confirm a demonstrated treatment effect of intepirdine (RVT-101) as an adjunctive therapy to donepezil for the treatment of subjects with Alzheimer's disease.

Condition or disease Intervention/treatment Phase
Alzheimer's Disease Drug: RVT-101 Drug: Placebo Phase 3

Detailed Description:
This Phase 3 study seeks to confirm a demonstrated treatment effect of intepirdine (RVT-101) on both cognition and activities of daily living when added to stable donepezil treatment in subjects with mild-to-moderate Alzheimer's disease after 24 weeks of double-blind treatment. This study will also provide further information on the safety and tolerability of the 35-mg dose of intepirdine (RVT-101) when used in combination with donepezil compared to donepezil alone. This study is being conducted under the agreement of a Special Protocol Assessment by FDA. Subjects completing this study will be eligible to enroll in a 12 month open-label study of RVT-101 (RVT-101-3002) in which concomitant medications for the treatment of Alzheimer's disease including memantine will be allowed.

Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 1315 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)
Primary Purpose: Treatment
Official Title: A Phase 3, Double-blind, Randomized Study of RVT-101 Versus Placebo When Added to Existing Stable Donepezil Treatment in Subjects With Mild to Moderate Alzheimer's Disease
Actual Study Start Date : October 2015
Actual Primary Completion Date : September 2017
Actual Study Completion Date : September 2017


Arm Intervention/treatment
Experimental: RVT-101
RVT-101 adjunct to 5 mg or 10 mg donepezil
Drug: RVT-101
once daily, oral, 35 mg tablets

Placebo Comparator: Placebo
Placebo adjunct to 5 mg or 10 mg donepezil
Drug: Placebo
once daily, oral, pill manufactured to match RVT-101 35 mg tablet




Primary Outcome Measures :
  1. Alzheimer's Disease Assessment Scale - Cognitive Subscale 11 Items (ADAS-Cog-11) Score Change From Baseline to Week 24 [ Time Frame: Baseline, 24 weeks ]
    The 11-item ADAS-Cog assesses a range of cognitive abilities including memory, comprehension, orientation in time and place, and spontaneous speech. The ADAS-Cog-11 total score range is from 0 to 70, with a higher score indicating more severe cognitive impairment.

  2. Alzheimer's Disease Cooperative Study - Activities of Daily Living (ADCS-ADL) Score Change From Baseline to Week 24 [ Time Frame: Baseline, 24 weeks ]
    The ADCS-ADL scale measures functional impairment in terms of activities of daily living. The score ranges from 0 to 78. The lower the score, the greater the impairment; higher scores indicate better (more desirable) function


Secondary Outcome Measures :
  1. Clinical Global Impression of Change - Plus Caregiver Interview (CIBIC+) Score at Week 24 [ Time Frame: 24 weeks ]
    The CIBIC+ assessment measures the global functioning of the subject. The CIBIC+ is scored as a seven-point categorical rating, ranging from a score of 1 (indicating "very much improved"), to a score of 4 (indicating "no change"), or to a score of 7 (indicating "very much worse.") Lower CIBIC+ scores indicate better (more desirable) function

  2. The Dependence Scale (DS) Score Change From Baseline to Week 24 [ Time Frame: Baseline, 24 weeks ]
    The DS measures the amount of assistance patients with dementia require in performing daily activities. The scale consists of 13 items, representing a range of severity from mild to severe levels of dependency. The score range is from 0 to 15 with higher scores indicating greater dependency.

  3. Neuropsychiatric Inventory (NPI) Score Change From Baseline to Week 24 [ Time Frame: Baseline and Week 24 ]
    The NPI is a behavior rating scale composed of a 12-item structured interview of the caregiver that is scored from 0 to 144 (the higher the score, the greater the psychiatric disturbance). It assesses 12 behavioral disturbances occurring in dementia patients: delusions, hallucinations, agitation, dysphoria, anxiety, apathy, irritability, euphoria, disinhibition, aberrant motor activity, night-time behavior disturbances, and eating disturbances. Both the frequency and the severity of each behavior are determined.

  4. ADAS-Cog-13 Score Change From Baseline to Week 24 [ Time Frame: Baseline, 24 weeks ]
    13-item ADAS-Cog assesses a range of cognitive abilities including memory, comprehension, orientation in time and place, and spontaneous speech. Most items are evaluated by tests, but some are dependent on clinician ratings on a 5-point scale. The ADAS-Cog-13 is the ADAS-Cog-11 with 2 additional items: delayed word recall and total digit cancellation. Scores for the ADAS-Cog-13 range from 0 to 85 with higher scores indicating greater dysfunction.

  5. Measurement of Concentrations of RVT-101 (Intepirdine) in Plasma [ Time Frame: Week 6, Week 12, Week 18, Week 24 ]
    Measurement collected at timepoints Week 6, Week 12, Week 18, and Week 24



Information from the National Library of Medicine

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Ages Eligible for Study:   50 Years to 85 Years   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  • Male or female subject with AD
  • Ongoing donepezil therapy for AD
  • An MMSE score 12 to 24 inclusive at Screening; MMSE score 10-26 inclusive at Baseline
  • Hachinski Ischaemia score less than or equal to 4 at Screening.
  • If female, subject must be: a. of non-childbearing potential or surgically sterile; or, b. willing to use an adequate methods of birth control. Male subjects who are sexually active will also be required to use an adequate form of birth control.
  • Subject has the ability to comply with procedures for cognitive and other testing in the opinion of the investigator.
  • Subject has a reliable caregiver who is willing to report on subject's status throughout the study.

Exclusion Criteria:

Other Causes for Dementia

  • Diagnosis of vascular dementia
  • Atypical clinical features or clinical course of dementia that would lead the investigator to conclude symptoms are more likely due to an alternate dementia diagnosis including, but not limited to, frontotemporal dementia, Lewy body dementia, or others.

Confounding Medical Conditions

  • History of significant psychiatric illness such as schizophrenia or bipolar affective disorder or any other significant psychiatric illness that in the opinion of the investigator would interfere with participation in the study;
  • Any clinically relevant concomitant disease, which, in the opinion of the investigator, makes the subject unsuitable for inclusion in the study.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT02585934


  Show 197 Study Locations
Sponsors and Collaborators
Axovant Sciences Ltd.
Investigators
Study Director: Ilise Lombardo, MD Axovant Sciences, Inc., Vice President, Clinical Research
  Study Documents (Full-Text)

Documents provided by Axovant Sciences Ltd.:
Study Protocol: Protocol  [PDF] April 13, 2016


Additional Information:
Responsible Party: Axovant Sciences Ltd.
ClinicalTrials.gov Identifier: NCT02585934     History of Changes
Other Study ID Numbers: RVT-101-3001
First Posted: October 26, 2015    Key Record Dates
Results First Posted: December 5, 2018
Last Update Posted: December 5, 2018
Last Verified: November 2018

Studies a U.S. FDA-regulated Drug Product: Yes
Studies a U.S. FDA-regulated Device Product: No

Keywords provided by Axovant Sciences Ltd.:
Alzheimer's disease
RVT-101
donepezil
intepirdine
dementia

Additional relevant MeSH terms:
Alzheimer Disease
Dementia
Brain Diseases
Central Nervous System Diseases
Nervous System Diseases
Tauopathies
Neurodegenerative Diseases
Neurocognitive Disorders
Mental Disorders
Donepezil
Cholinesterase Inhibitors
Enzyme Inhibitors
Molecular Mechanisms of Pharmacological Action
Cholinergic Agents
Neurotransmitter Agents
Physiological Effects of Drugs
Nootropic Agents