A Study to Evaluate the Effects of MK-0249 and an Alzheimer's Disease Medication on Cognitive Function in Adults With Alzheimer's Disease (MK-0249-023)

Phase 1

Terminated

• Conditions: Alzheimer's Disease; Dementia
• Interventions: Drug: MK-0249 7.5 mg; Drug: MK-0249 25 mg; Drug: Donepezil 5mg; Drug: Placebo to MK-0249; Drug: Placebo to Donepezil

• Registration Number: NCT00874939
• Lead Sponsor: Merck Sharp & Dohme LLC

Brief Summary

This study will evaluate acute symptomatic improvements in cognitive performance in healthy elderly participants with mild-to-moderate Alzheimer's disease. A four-week pilot study will first evaluate the CogState computerized cognitive battery in participants who are not receiving treatment. After completion of the pilot study, participants will be randomized to receive Placebo, Donepezil 5 mg, MK-0249 7.5 mg, and MK-0249 25 mg. After each drug administration the participants will be given the CogState computerized cognitive battery to assess cognitive performance. The primary hypotheses are that cognitive performance in participants with Alzheimer's disease, or in healthy participants, is improved by the administration of a single oral 5 mg dose of Donepezil as compared to placebo.

Detailed Description

Not available

Study Timeline

• Study First Submitted: 2009-04-02
• Study First Submitted QC: 2009-04-02
• Study First Posted: 2009-04-03
• Study Start: 2009-04-06
• Primary Completion: 2009-04-20
• Study Completion: 2009-04-20
• Results First Submitted: 2015-05-26
• Results First Submitted QC: 2015-05-26
• Results First Posted: 2015-06-08
• Status Verified: 2018-09
• Last Update Submitted: 2018-09-18
• Last Update Posted: 2018-10-17

Recruitment & Eligibility

• Status: TERMINATED
• Sex: All
• Target Recruitment: 4

Inclusion Criteria

Patient Specific:

• Female is not of reproductive potential
• Male who has a female partner(s) of child bearing potential, agrees to use acceptable method of contraception during the study
• Has at least 10 years of education or work history
• Has been a nonsmoker or has not used nicotine for at least 6 months
• Has a diagnosis of mild-to-moderate Alzheimer's Disease
• Has a reliable caregiver who consents to accompany the patient to all clinic visits, provide information to the study staff, and return for follow-up visits and procedures

Healthy Elderly Volunteer Specific:

• Is in good general health
• Has no clinically significant abnormality on electrocardiogram (ECG)

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Exclusion Criteria

Participant Specific:

• Has a history of a neurological disorder other than Alzheimer's disease
• Is living in a nursing home
• Has a history of stroke
• Has a history of psychotic disorder, an active major depressive disorder, or history of schizophrenia
• Has a history of a sleep disorder
• Has a history of a cardiovascular disorder
• Has a history of malignancy
• Is participating or has participated in a study with an investigational compound, device, or vaccine for Alzheimer's disease
• Consumes greater than 6 servings of caffeine (coffee, tea or cola etc.) per day
• Consumes greater than 3 alcoholic beverages per day
• Has had major surgery, donated or loss blood in past 8 weeks

Healthy Elderly Volunteer Specific:

• Is mentally or legally incapacitated, has significant emotional problems, or has a history of a psychiatric disorder over the last 5-10 years

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Study & Design

• Study Type: INTERVENTIONAL
• Study Design: CROSSOVER

Arm && Interventions

Group	Intervention	Description
DON→MK-7.5→MK-25→PBO	Donepezil 5mg	Treatment by single oral dose with Donepezil 5 mg in the first crossover period; MK-0249 7.5 mg in the second crossover period; MK-0249 25 mg in the third crossover period; and Placebo in the fourth crossover period.
PBO→DON→MK-25→MK-7.5	Donepezil 5mg	Treatment by single oral dose with Placebo in the first crossover period; Donepezil 5 mg in the second crossover period; MK-0249 25 mg in the third crossover period; and MK-0249 7.5 mg in the fourth crossover period.
PBO→MK-7.5→DON→MK-25	MK-0249 7.5 mg	Treatment by single oral dose with Placebo (PBO) in the first crossover period; MK-0249 7.5 mg (MK-7.5) in the second crossover period; Donepezil 5 mg (DON) in the third crossover period; and MK-0249 25 mg (MK-25) in the fourth crossover period.
MK-7.5→PBO→MK-25→DON	MK-0249 25 mg	Treatment by single oral dose with MK-0249 7.5 mg in the first crossover period; Placebo in the second crossover period; MK-0249 25 mg in the third crossover period; and Donepezil 5 mg in the fourth crossover period.
MK-7.5→PBO→MK-25→DON	MK-0249 7.5 mg	Treatment by single oral dose with MK-0249 7.5 mg in the first crossover period; Placebo in the second crossover period; MK-0249 25 mg in the third crossover period; and Donepezil 5 mg in the fourth crossover period.
PBO→MK-25→MK-7.5→DON	MK-0249 25 mg	Treatment by single oral dose with Placebo in the first crossover period; MK-0249 25 mg in the second crossover period; MK-0249 7.5 mg in the third crossover period; and Donepezil 5 mg in the fourth crossover period.
PBO→MK-25→MK-7.5→DON	Donepezil 5mg	Treatment by single oral dose with Placebo in the first crossover period; MK-0249 25 mg in the second crossover period; MK-0249 7.5 mg in the third crossover period; and Donepezil 5 mg in the fourth crossover period.
PBO→DON→MK-25→MK-7.5	MK-0249 25 mg	Treatment by single oral dose with Placebo in the first crossover period; Donepezil 5 mg in the second crossover period; MK-0249 25 mg in the third crossover period; and MK-0249 7.5 mg in the fourth crossover period.
DON→MK-25→PBO→MK-7.5	MK-0249 7.5 mg	Treatment by single oral dose with Donepezil 5 mg in the first crossover period; MK-0249 25 mg in the second crossover period; Placebo in the third crossover period; and MK-0249 7.5 mg in the fourth crossover period.
MK-25→DON→MK-7.5→PBO	MK-0249 25 mg	Treatment by single oral dose with MK-0249 25 mg in the first crossover period; Donepezil 5 mg in the second crossover period; MK-0249 7.5 mg in the third crossover period; and Placebo in the fourth crossover period.
MK-25→DON→MK-7.5→PBO	MK-0249 7.5 mg	Treatment by single oral dose with MK-0249 25 mg in the first crossover period; Donepezil 5 mg in the second crossover period; MK-0249 7.5 mg in the third crossover period; and Placebo in the fourth crossover period.
MK-7.5→DON→PBO→MK-25	MK-0249 25 mg	Treatment by single oral dose with MK-0249 7.5 mg in the first crossover period; Donepezil 5 mg in the second crossover period; Placebo in the third crossover period; and MK-0249 25 mg in the fourth crossover period.
MK-7.5→DON→PBO→MK-25	Donepezil 5mg	Treatment by single oral dose with MK-0249 7.5 mg in the first crossover period; Donepezil 5 mg in the second crossover period; Placebo in the third crossover period; and MK-0249 25 mg in the fourth crossover period.
MK-25→DON→MK-7.5→PBO	Donepezil 5mg	Treatment by single oral dose with MK-0249 25 mg in the first crossover period; Donepezil 5 mg in the second crossover period; MK-0249 7.5 mg in the third crossover period; and Placebo in the fourth crossover period.
MK-7.5→DON→PBO→MK-25	MK-0249 7.5 mg	Treatment by single oral dose with MK-0249 7.5 mg in the first crossover period; Donepezil 5 mg in the second crossover period; Placebo in the third crossover period; and MK-0249 25 mg in the fourth crossover period.
MK-25→PBO→DON→MK-7.5	MK-0249 25 mg	Treatment by single oral dose with MK-0249 25 mg in the first crossover period; Placebo in the second crossover period; Donepezil 5 mg in the third crossover period; and MK-0249 7.5 mg in the fourth crossover period.
PBO→MK-25→MK-7.5→DON	MK-0249 7.5 mg	Treatment by single oral dose with Placebo in the first crossover period; MK-0249 25 mg in the second crossover period; MK-0249 7.5 mg in the third crossover period; and Donepezil 5 mg in the fourth crossover period.
DON→MK-7.5→MK-25→PBO	MK-0249 25 mg	Treatment by single oral dose with Donepezil 5 mg in the first crossover period; MK-0249 7.5 mg in the second crossover period; MK-0249 25 mg in the third crossover period; and Placebo in the fourth crossover period.
MK-25→PBO→DON→MK-7.5	Donepezil 5mg	Treatment by single oral dose with MK-0249 25 mg in the first crossover period; Placebo in the second crossover period; Donepezil 5 mg in the third crossover period; and MK-0249 7.5 mg in the fourth crossover period.
DON→MK-7.5→MK-25→PBO	MK-0249 7.5 mg	Treatment by single oral dose with Donepezil 5 mg in the first crossover period; MK-0249 7.5 mg in the second crossover period; MK-0249 25 mg in the third crossover period; and Placebo in the fourth crossover period.
MK-7.5→MK-25→DON→PBO	MK-0249 7.5 mg	Treatment by single oral dose with MK-0249 7.5 mg in the first crossover period; MK-0249 25 mg in the second crossover period; Donepezil 5 mg in the third crossover period; and Placebo in the fourth crossover period.
MK-7.5→MK-25→DON→PBO	MK-0249 25 mg	Treatment by single oral dose with MK-0249 7.5 mg in the first crossover period; MK-0249 25 mg in the second crossover period; Donepezil 5 mg in the third crossover period; and Placebo in the fourth crossover period.
DON→PBO→MK-7.5→MK-25	MK-0249 7.5 mg	Treatment by single oral dose with Donepezil 5 mg in the first crossover period; Placebo in the second crossover period; MK-0249 7.5 mg in the third crossover period; and MK-0249 25 mg in the fourth crossover period.
MK-7.5→MK-25→DON→PBO	Donepezil 5mg	Treatment by single oral dose with MK-0249 7.5 mg in the first crossover period; MK-0249 25 mg in the second crossover period; Donepezil 5 mg in the third crossover period; and Placebo in the fourth crossover period.
DON→PBO→MK-7.5→MK-25	MK-0249 25 mg	Treatment by single oral dose with Donepezil 5 mg in the first crossover period; Placebo in the second crossover period; MK-0249 7.5 mg in the third crossover period; and MK-0249 25 mg in the fourth crossover period.
DON→PBO→MK-7.5→MK-25	Donepezil 5mg	Treatment by single oral dose with Donepezil 5 mg in the first crossover period; Placebo in the second crossover period; MK-0249 7.5 mg in the third crossover period; and MK-0249 25 mg in the fourth crossover period.
MK-25→MK-7.5→PBO→DON	MK-0249 7.5 mg	Treatment by single oral dose with MK-0249 25 mg in the first crossover period; MK-0249 7.5 mg in the second crossover period; Placebo in the third crossover period; and Donepezil 5 mg in the fourth crossover period.
MK-7.5→MK-25→DON→PBO	Placebo to MK-0249	Treatment by single oral dose with MK-0249 7.5 mg in the first crossover period; MK-0249 25 mg in the second crossover period; Donepezil 5 mg in the third crossover period; and Placebo in the fourth crossover period.
PBO→MK-7.5→DON→MK-25	Placebo to Donepezil	Treatment by single oral dose with Placebo (PBO) in the first crossover period; MK-0249 7.5 mg (MK-7.5) in the second crossover period; Donepezil 5 mg (DON) in the third crossover period; and MK-0249 25 mg (MK-25) in the fourth crossover period.
MK-7.5→MK-25→DON→PBO	Placebo to Donepezil	Treatment by single oral dose with MK-0249 7.5 mg in the first crossover period; MK-0249 25 mg in the second crossover period; Donepezil 5 mg in the third crossover period; and Placebo in the fourth crossover period.
MK-25→PBO→DON→MK-7.5	Placebo to MK-0249	Treatment by single oral dose with MK-0249 25 mg in the first crossover period; Placebo in the second crossover period; Donepezil 5 mg in the third crossover period; and MK-0249 7.5 mg in the fourth crossover period.
PBO→DON→MK-25→MK-7.5	Placebo to Donepezil	Treatment by single oral dose with Placebo in the first crossover period; Donepezil 5 mg in the second crossover period; MK-0249 25 mg in the third crossover period; and MK-0249 7.5 mg in the fourth crossover period.
MK-7.5→PBO→MK-25→DON	Donepezil 5mg	Treatment by single oral dose with MK-0249 7.5 mg in the first crossover period; Placebo in the second crossover period; MK-0249 25 mg in the third crossover period; and Donepezil 5 mg in the fourth crossover period.
PBO→MK-7.5→DON→MK-25	Donepezil 5mg	Treatment by single oral dose with Placebo (PBO) in the first crossover period; MK-0249 7.5 mg (MK-7.5) in the second crossover period; Donepezil 5 mg (DON) in the third crossover period; and MK-0249 25 mg (MK-25) in the fourth crossover period.
MK-25→PBO→DON→MK-7.5	MK-0249 7.5 mg	Treatment by single oral dose with MK-0249 25 mg in the first crossover period; Placebo in the second crossover period; Donepezil 5 mg in the third crossover period; and MK-0249 7.5 mg in the fourth crossover period.
PBO→MK-7.5→DON→MK-25	MK-0249 25 mg	Treatment by single oral dose with Placebo (PBO) in the first crossover period; MK-0249 7.5 mg (MK-7.5) in the second crossover period; Donepezil 5 mg (DON) in the third crossover period; and MK-0249 25 mg (MK-25) in the fourth crossover period.
PBO→MK-7.5→DON→MK-25	Placebo to MK-0249	Treatment by single oral dose with Placebo (PBO) in the first crossover period; MK-0249 7.5 mg (MK-7.5) in the second crossover period; Donepezil 5 mg (DON) in the third crossover period; and MK-0249 25 mg (MK-25) in the fourth crossover period.
DON→MK-25→PBO→MK-7.5	Placebo to Donepezil	Treatment by single oral dose with Donepezil 5 mg in the first crossover period; MK-0249 25 mg in the second crossover period; Placebo in the third crossover period; and MK-0249 7.5 mg in the fourth crossover period.
PBO→MK-25→MK-7.5→DON	Placebo to Donepezil	Treatment by single oral dose with Placebo in the first crossover period; MK-0249 25 mg in the second crossover period; MK-0249 7.5 mg in the third crossover period; and Donepezil 5 mg in the fourth crossover period.
MK-7.5→PBO→MK-25→DON	Placebo to MK-0249	Treatment by single oral dose with MK-0249 7.5 mg in the first crossover period; Placebo in the second crossover period; MK-0249 25 mg in the third crossover period; and Donepezil 5 mg in the fourth crossover period.
DON→MK-25→PBO→MK-7.5	MK-0249 25 mg	Treatment by single oral dose with Donepezil 5 mg in the first crossover period; MK-0249 25 mg in the second crossover period; Placebo in the third crossover period; and MK-0249 7.5 mg in the fourth crossover period.
DON→MK-25→PBO→MK-7.5	Placebo to MK-0249	Treatment by single oral dose with Donepezil 5 mg in the first crossover period; MK-0249 25 mg in the second crossover period; Placebo in the third crossover period; and MK-0249 7.5 mg in the fourth crossover period.
DON→MK-7.5→MK-25→PBO	Placebo to Donepezil	Treatment by single oral dose with Donepezil 5 mg in the first crossover period; MK-0249 7.5 mg in the second crossover period; MK-0249 25 mg in the third crossover period; and Placebo in the fourth crossover period.
PBO→DON→MK-25→MK-7.5	MK-0249 7.5 mg	Treatment by single oral dose with Placebo in the first crossover period; Donepezil 5 mg in the second crossover period; MK-0249 25 mg in the third crossover period; and MK-0249 7.5 mg in the fourth crossover period.
MK-7.5→PBO→MK-25→DON	Placebo to Donepezil	Treatment by single oral dose with MK-0249 7.5 mg in the first crossover period; Placebo in the second crossover period; MK-0249 25 mg in the third crossover period; and Donepezil 5 mg in the fourth crossover period.
MK-7.5→DON→PBO→MK-25	Placebo to MK-0249	Treatment by single oral dose with MK-0249 7.5 mg in the first crossover period; Donepezil 5 mg in the second crossover period; Placebo in the third crossover period; and MK-0249 25 mg in the fourth crossover period.
MK-25→PBO→DON→MK-7.5	Placebo to Donepezil	Treatment by single oral dose with MK-0249 25 mg in the first crossover period; Placebo in the second crossover period; Donepezil 5 mg in the third crossover period; and MK-0249 7.5 mg in the fourth crossover period.
DON→MK-25→PBO→MK-7.5	Donepezil 5mg	Treatment by single oral dose with Donepezil 5 mg in the first crossover period; MK-0249 25 mg in the second crossover period; Placebo in the third crossover period; and MK-0249 7.5 mg in the fourth crossover period.
MK-25→DON→MK-7.5→PBO	Placebo to MK-0249	Treatment by single oral dose with MK-0249 25 mg in the first crossover period; Donepezil 5 mg in the second crossover period; MK-0249 7.5 mg in the third crossover period; and Placebo in the fourth crossover period.
MK-25→DON→MK-7.5→PBO	Placebo to Donepezil	Treatment by single oral dose with MK-0249 25 mg in the first crossover period; Donepezil 5 mg in the second crossover period; MK-0249 7.5 mg in the third crossover period; and Placebo in the fourth crossover period.
PBO→MK-25→MK-7.5→DON	Placebo to MK-0249	Treatment by single oral dose with Placebo in the first crossover period; MK-0249 25 mg in the second crossover period; MK-0249 7.5 mg in the third crossover period; and Donepezil 5 mg in the fourth crossover period.
DON→MK-7.5→MK-25→PBO	Placebo to MK-0249	Treatment by single oral dose with Donepezil 5 mg in the first crossover period; MK-0249 7.5 mg in the second crossover period; MK-0249 25 mg in the third crossover period; and Placebo in the fourth crossover period.
MK-7.5→DON→PBO→MK-25	Placebo to Donepezil	Treatment by single oral dose with MK-0249 7.5 mg in the first crossover period; Donepezil 5 mg in the second crossover period; Placebo in the third crossover period; and MK-0249 25 mg in the fourth crossover period.
MK-25→MK-7.5→PBO→DON	Donepezil 5mg	Treatment by single oral dose with MK-0249 25 mg in the first crossover period; MK-0249 7.5 mg in the second crossover period; Placebo in the third crossover period; and Donepezil 5 mg in the fourth crossover period.
PBO→DON→MK-25→MK-7.5	Placebo to MK-0249	Treatment by single oral dose with Placebo in the first crossover period; Donepezil 5 mg in the second crossover period; MK-0249 25 mg in the third crossover period; and MK-0249 7.5 mg in the fourth crossover period.
DON→PBO→MK-7.5→MK-25	Placebo to Donepezil	Treatment by single oral dose with Donepezil 5 mg in the first crossover period; Placebo in the second crossover period; MK-0249 7.5 mg in the third crossover period; and MK-0249 25 mg in the fourth crossover period.
DON→PBO→MK-7.5→MK-25	Placebo to MK-0249	Treatment by single oral dose with Donepezil 5 mg in the first crossover period; Placebo in the second crossover period; MK-0249 7.5 mg in the third crossover period; and MK-0249 25 mg in the fourth crossover period.
MK-25→MK-7.5→PBO→DON	MK-0249 25 mg	Treatment by single oral dose with MK-0249 25 mg in the first crossover period; MK-0249 7.5 mg in the second crossover period; Placebo in the third crossover period; and Donepezil 5 mg in the fourth crossover period.
MK-25→MK-7.5→PBO→DON	Placebo to MK-0249	Treatment by single oral dose with MK-0249 25 mg in the first crossover period; MK-0249 7.5 mg in the second crossover period; Placebo in the third crossover period; and Donepezil 5 mg in the fourth crossover period.
MK-25→MK-7.5→PBO→DON	Placebo to Donepezil	Treatment by single oral dose with MK-0249 25 mg in the first crossover period; MK-0249 7.5 mg in the second crossover period; Placebo in the third crossover period; and Donepezil 5 mg in the fourth crossover period.

Primary Outcome Measures

Name	Time	Method
Time Weighted Average of the Change From Baseline After Single Dose Administration of Donepezil 5 mg or Placebo, Measured by Groton Maze Learning Test (GMLT) in Healthy Participants	Baseline and 5-7 hours post-dose	The GMLT measures executive function and spatial problem solving on a computer touch screen where participants learn a hidden pathway through a maze consisting of a 10 x 10 grid of tiles. The number of errors made for five consecutive trials at a single session is totaled, where lower number of errors indicates better performance. A change from baseline that is positive indicates improved function.
Time Weighted Average of the Change From Baseline After Single Dose Administration of Donepezil 5 mg or Placebo, Measured by Groton Maze Learning Test (GMLT) in Participants With Alzheimer's Disease	Baseline and 5-7 hours post-dose	The GMLT measures executive function and spatial problem solving on a computer touch screen where participants learn a hidden pathway through a maze consisting of a 10 x 10 grid of tiles. The number of errors made for five consecutive trials at a single session is totaled, where lower number of errors indicates better performance. A change from baseline that is positive indicates improved function.

Secondary Outcome Measures

Name	Time	Method
Time Weighted Average of the Change From Baseline After Single Dose Administration of MK-0249, Measured by GMLT in Participants With Alzheimer's Disease.	Baseline and 5-7 hours post-dose	The GMLT measures executive function and spatial problem solving on a computer touch screen where participants learn a hidden pathway through a maze consisting of a 10 x 10 grid of tiles. The number of errors made for five consecutive trials at a single session is totaled, where lower number of errors indicates better performance. A change from baseline that is positive indicates improved function.
Time Weighted Average of the Change From Baseline After Single Dose Administration of MK-0249, Measured by GMLT in Healthy Participants.	Baseline and 5-7 hours post-dose	The GMLT measures executive function and spatial problem solving on a computer touch screen where participants learn a hidden pathway through a maze consisting of a 10 x 10 grid of tiles. The number of errors made for five consecutive trials at a single session is totaled, where lower number of errors indicates better performance. A change from baseline that is positive indicates improved function.