Back to resultsRoflumilast and Donepezil to Reverse Scopolamine Induced Cognitive Deficits in Healthy Adults
Primary Purpose
Memory Impairment, Alzheimer's Disease
Status
Completed
Phase
Phase 1
Locations
United Kingdom
Study Type
Interventional
Intervention
Roflumilast
Roflumilast placebo
Donepezil
Donepezil placebo
Scopolamine
Sponsored by
About this trial
This is an interventional treatment trial for Memory Impairment focused on measuring Drug therapy
Eligibility Criteria
Inclusion Criteria:
- In the opinion of the investigator, the participant is capable of understanding and complying with protocol requirements.
- The participant or, when applicable, the participant's legally acceptable representative signs and dates a written, informed consent form and any required privacy authorization prior to the initiation of any study procedures.
- Is a healthy adult male.
- Is aged 18 to 45 years, inclusive, at the time of informed consent.
- Weighs at least 60 kg and has a body mass index (BMI) between 18 and 32 kg/m^2 inclusive at Screening.
- A male participant who is nonsterilized and sexually active with a female partner of childbearing potential agrees to use adequate contraception from signing of informed consent throughout the duration of the study and for 12 weeks after last dose.
- Has clinical laboratory evaluations (including clinical chemistry, hematology and complete urinalysis) within the reference range for the testing laboratory, unless the results are deemed not to be clinically significant (CS) by the investigator at screening and Day -1 (Check-in) of Period 1.
Exclusion Criteria:
- Has received any investigational compound within 3 months prior to the first dose of study medication.
- Has received roflumilast, donepezil, or scopolamine in a previous clinical study or as a therapeutic agent.
- Is an immediate family member, study site employee, or in a dependant relationship with a study site employee who is involved in the conduct of this study (eg, spouse, parent, child, sibling) or may consent under duress.
- Has uncontrolled, clinically significant neurologic, cardiovascular, pulmonary, hepatic, renal, metabolic, gastrointestinal, or endocrine disease or other abnormality which may impact the ability of the participant to participate or potentially confound the study results.
- Contraindications to scopolamine: hypersensitivity to scopolamine and other belladonna alkaloids, and/or any component of the formulation, serious allergic reactions, wide and narrow angle glaucoma, gastrointestinal motility disorders (such as constipation, gastroesophageal reflux disease, irritable bowel syndrome), benign prostatic hyperplasia with urinary retention, asthma, chronic obstructive pulmonary disease (COPD), seizures, coronary artery disease, hypertension, and congestive heart failure.
- Participants with existing psychiatric disease/condition including psychosis, affective disorder, anxiety disorder, borderline state and personality disorder according to the criteria in the Diagnostic and Statistical Manual of Mental Disorders, 4th edition, as assessed by the Mini International Neuropsychiatric Interview (MINI) or acute psychiatric episode within 6 months of Screening.
- Has a known hypersensitivity to any component of the formulation of roflumilast, donepezil, scopolamine, or related compounds.
- Has a positive urine drug result for drugs of abuse at Screening or Day -1 (Check-in) of each Period.
- Has a history of drug abuse (defined as any illicit drug use) or a history of alcohol abuse within 1 year prior to the screening visit or is unwilling to agree to abstain from drug use or excessive alcohol use throughout the study.
- Has taken any excluded medication, supplements, or food products listed in the Excluded Medications and Dietary Products.
- Intends to donate sperm during the course of this study or for 12 weeks thereafter.
- Any finding in the participant's medical history, physical examination, or safety laboratory tests giving reasonable suspicion of a disease that would contraindicate taking roflumilast, donepezil, scopolamine, or a similar drug in the same class, or that might interfere with the conduct of the study. This includes, but is not limited to, peptic ulcer disease, seizure disorders, and cardiac arrhythmias.
- Has current or recent (within 6 months) gastrointestinal disease that would be expected to influence the absorption of drugs (ie, a history of malabsorption, esophageal reflux, peptic ulcer disease, or erosive esophagitis, frequent [more than once per week] occurrence of heartburn.
- Has had any surgical intervention within 6 months that may impact the bioavailability of the compound (eg, cholecystectomy, bariatric surgery).
- Has a history of cancer within the past 5 years prior to the first dose of study medication. This criterion does not include those participants with basal cell or stage I squamous cell carcinoma of the skin who are eligible.
- Has a positive test result for hepatitis B surface antigen (HBsAg), hepatitis C antibody (HCV), human immunodeficiency virus (HIV) antibody/antigen at Screening.
- Has used nicotine-containing products (including but not limited to cigarettes, pipes, cigars, chewing tobacco, nicotine patch or nicotine gum) within 28 days prior to Check-in on Day -1 (Check-in of Period 1).
- Cotinine test is positive at Screening or Check-in (Day -1 of each Period).
- Has poor peripheral venous access.
- Has donated or lost 450 mL or more of his or her blood volume (including plasmapheresis), or had a transfusion of any blood product within 3 months prior to Day 1 of Period 1.
- Has a Screening or Day -1 (Check-in) of Period 1 abnormal (clinically significant) electrocardiogram (ECG). Entry of any participant with an abnormal (not clinically significant) ECG must be approved, and documented by signature by the principal investigator or qualified delegate.
- Has abnormal Screening or Day -1 (Check-in) of Period 1 laboratory values that suggest a clinically significant underlying disease or participant with the following lab abnormalities: alanine aminotransferase (ALT) and/or aspartate aminotransferase (AST) >1.5 the upper limits of normal.
- Has a current diagnosis or history of glaucoma or had a first-degree relative diagnosed with glaucoma.
- Has a risk of suicide according to the investigator's clinical judgment (eg, per Columbia-Suicide Severity Rating Scale (C-SSRS) or has made a suicide attempt in the previous 6 months).
- Has a history of depression associated with suicidal thinking and/or behavior.
- 26. In the opinion of the investigator or sponsor, the participant is unsuitable for inclusion in the study.
Sites / Locations
Arms of the Study
Arm 1
Arm 2
Arm 3
Arm 4
Arm Type
Experimental
Experimental
Experimental
Experimental
Arm Label
Sequence 1 (ABDC)
Sequence 2 (BCAD)
Sequence 3 (CDBA)
Sequence 4 (DACB)
Arm Description
Roflumilast placebo-matching tablets, orally, donepezil placebo-matching overencapsulated tablets, orally, and scopolamine 0.5 mg subcutaneous injection, once, Day 1, Period 1, followed by roflumilast placebo-matching tablets, orally, donepezil 10 mg, overencapsulated tablets, orally and scopolamine 0.5 mg subcutaneous injection, once, Day 1, Period 2, followed by roflumilast Dose A tablets, orally, donepezil 10 mg, overencapsulated tablets, orally and scopolamine 0.5 mg subcutaneous injection, once, Day 1, Period 3, followed by roflumilast Dose A tablets, orally, donepezil placebo-matching overencapsulated tablets, orally, and scopolamine 0.5 mg subcutaneous injection, once, Day 1, Period 4. Each treatment period is separated by a 14-day washout period.
Roflumilast placebo-matching tablets, orally, donepezil 10 mg, overencapsulated tablets, orally and scopolamine 0.5 mg subcutaneous injection, once, Day 1, Period 1, followed by roflumilast Dose A tablets, orally, donepezil placebo-matching overencapsulated tablets, orally, and scopolamine 0.5 mg subcutaneous injection, once, Day 1, Period 2, followed by roflumilast placebo-matching tablets, orally, donepezil placebo-matching overencapsulated tablets, orally, and scopolamine 0.5 mg subcutaneous injection, once, Day 1, Period 3, followed by roflumilast Dose A tablets, orally, donepezil 10 mg, overencapsulated tablets, orally and scopolamine 0.5 mg subcutaneous injection, once, Day 1, Period 4. Each treatment period is separated by a 14-day washout period.
Roflumilast Dose A tablets, orally, donepezil placebo-matching overencapsulated tablets, orally, and scopolamine 0.5 mg subcutaneous injection, once, Day 1, Period 1, followed by roflumilast Dose A tablets, orally, donepezil 10 mg, overencapsulated tablets, orally and scopolamine 0.5 mg subcutaneous injection, once, Day 1, Period 2, followed by roflumilast placebo-matching tablets, orally, donepezil 10 mg, overencapsulated tablets, orally and scopolamine 0.5 mg subcutaneous injection, once, Day 1, Period 3, followed by roflumilast placebo-matching tablets, orally, donepezil placebo-matching overencapsulated tablets, orally, and scopolamine 0.5 mg subcutaneous injection, once, Day 1, Period 4. Each treatment period is separated by a 14-day washout period.
Roflumilast Dose A tablets, orally, donepezil 10 mg, overencapsulated tablets, orally and scopolamine 0.5 mg subcutaneous injection, once, Day 1, Period 1, followed by roflumilast placebo-matching tablets, orally, donepezil placebo-matching overencapsulated tablets, orally, and scopolamine 0.5 mg subcutaneous injection, once, Day 1, Period 2, followed by roflumilast Dose A tablets, orally, donepezil placebo-matching overencapsulated tablets, orally, and scopolamine 0.5 mg subcutaneous injection, once, Day 1, Period 3, followed by roflumilast placebo-matching tablets, orally, donepezil 10 mg, overencapsulated tablets, orally and scopolamine 0.5 mg subcutaneous injection, once, Day 1, Period 4. Each treatment period is separated by a 14-day washout period.
Outcomes
Primary Outcome Measures
Change From Baseline in the Verbal Recall Memory (VRM) Total Number of Correct Responses for Delayed Recall at 1 Hour After Scopolamine Administration
VRM measures the ability to encode and subsequently retrieve verbal information. This task begins with the first presentation phase in which 18 words are shown in turn on the screen. The participant is then asked to recall as many words as possible during the first immediate recall phase. The same 18 words are then shown in a second presentation phase which is followed by a second immediate recall phase. After a delay of approximately 20-30 minutes, a delayed recall stage is completed. The possible range of correct responses is 0 (worst) to 18 (best). Higher number of correct responses in the test indicates a better outcome. A negative change from baseline indicates a worsening of the score.
Change From Baseline in the Verbal Recall Memory (VRM) Total Number of Correct Responses for Immediate Recall at 1 Hour After Scopolamine Administration
VRM measures the ability to encode and subsequently retrieve verbal information. This task begins with the first presentation phase in which 18 words are shown in turn on the screen. The participant is then asked to recall as many words as possible during the first immediate recall phase. The possible range of correct responses is 0 (worst) to 18 (best). Higher number of correct responses in the test indicates a better outcome. A negative change from baseline indicates a worsening of the score.
Secondary Outcome Measures
Change From Baseline in the Verbal Recall Memory (VRM) Total Number of Correct Responses for Immediate and Delayed Recall at 2 and 4 Hours After Scopolamine Administration
VRM measures the ability to encode and subsequently retrieve verbal information. This task begins with the first presentation phase in which 18 words are shown in turn on the screen. The participant is then asked to recall as many words as possible during the first immediate recall phase. The same 18 words are then shown in a second presentation phase which is followed by a second immediate recall phase. After a delay of approximately 20-30 minutes, a delayed recall stage is completed. The possible range of correct responses is 0 (worst) to 18 (best). Higher number of correct responses in the test indicates a better outcome. A negative change from baseline indicates a worsening of the score.
Change From Baseline in the Paired Associates Learning (PAL) Total Number of Errors Adjusted at All Time-points Assessed After Scopolamine Administration
PAL assesses visuospatial associative learning and memory. Boxes are displayed on the screen and open in a randomised order to reveal a number of patterns. The patterns are then displayed in the middle of the screen, one at a time, and the participant must touch the box where the pattern was originally located. If the participant makes an error, the patterns are re-presented to remind the participant of their locations. If the participant has not responded correctly within six attempts, ie, one presentation and five re-presentations, the task is terminated. As the task progresses the difficulty level increases with the number of patterns to be remembered. For participants who fail to complete all levels, an adjusted total is calculated that takes into account errors predicted in the stages that were not attempted. The possible range for total errors is 0 (best) to 91 (worst). Fewer number of errors in the test indicates a better outcome.
Change From Baseline in the Rapid Visual Information Processing (RVP) A Prime Signal Detection at All Time-points Assessed After Scopolamine Administration
RVP is a task of continuous performance and visual sustained attention. The task consists of a 2-minute practice stage and a 7-minute assessed stage. There is a white box in the centre of the screen in which single digits from 2 to 9 appear one at a time in a pseudo-random order at a rate of 100 digits per minute. Participants must detect target sequences of digits (2-4-6, 3-5-7, and 4-6-8) and touch a button when they see the last digit of a target sequence. Nine target sequences appear every 100 numbers. A prime (A') is a signal detection measure that reflects target sensitivity regardless of the participant's tendency, or bias, to respond. Detection sensitivity for RVP A' prime: 0 to 1. Lower numbers in the test indicates worsening in the performance.
Change From Baseline in the Rapid Visual Information Processing (RVP) Median Latency at All Time-points Assessed After Scopolamine Administration
RVP is a task of continuous performance and visual sustained attention. The task consists of a 2-minute practice stage and a 7-minute assessed stage. There is a white box in the centre of the screen in which single digits from 2 to 9 appear one at a time in a pseudo-random order at a rate of 100 digits per minute. Participants must detect target sequences of digits (2-4-6, 3-5-7, and 4-6-8) and touch a button when they see the last digit of a target sequence. Nine target sequences appear every 100 numbers. Assessment will be based on a median latency. The possible range for RVP median latency is 100 (worst) to 1900 (best). Higher number in the test indicates a better outcome. "Median latency" is a measure captured by computerized test measure and given as "one" time value (between 100 and 1900). The "mean" of these values is presented.
Change From Baseline in the Spatial Working Memory (SWM) Total Number of Between Errors at the 10-Box Stage and the 12-Box Stage at All Time-points Assessed After Scopolamine Administration
SWM assesses the ability to retain spatial information and manipulate it in working memory. In this task, colored boxes are shown on the screen, and participants must search for blue tokens by touching the colored boxes to open them. When the blue token has been found the participant has to place the token in the black column ('home') on the right-hand side of the screen by touching this area. The participant must not return to a box where a token has previously been found. The task becomes more difficult as the number of boxes increases (one trial at each of 6-box and 8-box stages; three trials at each of 10-box and 12-box stages). Between Errors is the total number of times the participant revisits a box in which a token has previously been found in the same problem. The possible range of errors is 0 (best) to 1040 (worst). Lower number of errors in the test indicates a better outcome.
Percentage of Participants Who Experience at Least 1 Treatment Emergent Adverse Event (TEAE)
An Adverse Event (AE) is defined as any untoward medical occurrence in a clinical investigation participant administered a drug; it does not necessarily have to have a causal relationship with this treatment. An AE can therefore be any unfavorable and unintended sign (eg, a clinically significant abnormal laboratory finding), symptom, or disease temporally associated with the use of a drug, whether or not it is considered related to the drug. A TEAE is defined as any adverse event, regardless of relationship to study drug that occurs or worsens after the first dose of study drug and no more than 14 days after the last dose of study drug.
Percentage of Participants With Markedly Abnormal Safety Laboratory Tests
The percentage of participants with any markedly abnormal standard safety laboratory values, including hematology, serum chemistries, and urinalysis. LLN=lower limit of normal. ULN=upper limit of normal.
Percentage of Participants With Markedly Abnormal Vital Sign Measurements at Least Once Post-dose
The percentage of participants who meet markedly abnormal criteria for vital signs, including oral body temperature, respiration rate, pulse, and resting blood pressure and after standing.
Percentage of Participants With Markedly Abnormal Criteria for Safety Electrocardiogram (ECG) Parameters at Least Once Post-Dose
The percentage of participants who meet markedly abnormal criteria specified by the protocol and statistical analysis plan=abnormal clinically significant.
Full Information
1. Study Identification
Unique Protocol Identification Number
NCT02051335
Brief Title
Roflumilast and Donepezil to Reverse Scopolamine Induced Cognitive Deficits in Healthy Adults
Official Title
A Randomized, Double-Blind, Placebo Controlled, 4-Period, Cross-Over Study to Evaluate the Effects of Single Oral Administrations of Roflumilast in Combination With Donepezil on Reversing Scopolamine (Hyoscine) Induced Deficits in Psychomotor and Cognitive Function in Healthy Adults
Study Type
Interventional
2. Study Status
Record Verification Date
September 2016
Overall Recruitment Status
Completed
Study Start Date
January 2014 (undefined)
Primary Completion Date
May 2014 (Actual)
Study Completion Date
May 2014 (Actual)
3. Sponsor/Collaborators
Responsible Party, by Official Title
Sponsor
Name of the Sponsor
AstraZeneca
4. Oversight
Data Monitoring Committee
No
5. Study Description
Brief Summary
The purpose of this study is to determine whether scopolamine-induced cognitive impairment is attenuated by the administration of roflumilast in combination with donepezil.
Detailed Description
The drug being tested in this study is called roflumilast. Roflumilast is being tested as a potential treatment for Alzheimer's disease. This study will look at roflumilast combined with a medication called donepezil, and their ability to reverse mimicked Alzheimer's disease symptoms that have been brought on by administration of a drug called scopolamine.
The study will enroll up to 28 participants. Participants will be randomly assigned (by chance, like flipping a coin) to one of four treatment groups-which will remain undisclosed to the participant and study doctor during the study (unless there is an urgent medical need). All participants will receive the following treatments at varying time points throughout the study:
Roflumilast Dose A tablets
Donepezil 10 mg capsules
Placebo (dummy inactive pill) - this is a tablet or capsule that looks like the study drug but has no active ingredient
Scopolamine 0.5 mg subcutaneous injection.
All participants will be asked to take 2 tablets and 1 capsule and will receive a scopolamine subcutaneous injection on the first day of 4 separate study periods. Participants will then be assessed for how the scopolamine affects their mental processes and whether the study drug improves this.
This single-center trial will be conducted in England. The overall time to participate in this study is up to 95 days. Participants will make 7 visits to the clinic, including 4 separate periods of 2 days confinement to the clinic, and a follow-up assessment 14 days after the last treatment period.
6. Conditions and Keywords
Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Memory Impairment, Alzheimer's Disease
Keywords
Drug therapy
7. Study Design
Primary Purpose
Treatment
Study Phase
Phase 1
Interventional Study Model
Crossover Assignment
Masking
ParticipantCare ProviderInvestigatorOutcomes Assessor
Allocation
Randomized
Enrollment
27 (Actual)
8. Arms, Groups, and Interventions
Arm Title
Sequence 1 (ABDC)
Arm Type
Experimental
Arm Description
Roflumilast placebo-matching tablets, orally, donepezil placebo-matching overencapsulated tablets, orally, and scopolamine 0.5 mg subcutaneous injection, once, Day 1, Period 1, followed by roflumilast placebo-matching tablets, orally, donepezil 10 mg, overencapsulated tablets, orally and scopolamine 0.5 mg subcutaneous injection, once, Day 1, Period 2, followed by roflumilast Dose A tablets, orally, donepezil 10 mg, overencapsulated tablets, orally and scopolamine 0.5 mg subcutaneous injection, once, Day 1, Period 3, followed by roflumilast Dose A tablets, orally, donepezil placebo-matching overencapsulated tablets, orally, and scopolamine 0.5 mg subcutaneous injection, once, Day 1, Period 4. Each treatment period is separated by a 14-day washout period.
Arm Title
Sequence 2 (BCAD)
Arm Type
Experimental
Arm Description
Roflumilast placebo-matching tablets, orally, donepezil 10 mg, overencapsulated tablets, orally and scopolamine 0.5 mg subcutaneous injection, once, Day 1, Period 1, followed by roflumilast Dose A tablets, orally, donepezil placebo-matching overencapsulated tablets, orally, and scopolamine 0.5 mg subcutaneous injection, once, Day 1, Period 2, followed by roflumilast placebo-matching tablets, orally, donepezil placebo-matching overencapsulated tablets, orally, and scopolamine 0.5 mg subcutaneous injection, once, Day 1, Period 3, followed by roflumilast Dose A tablets, orally, donepezil 10 mg, overencapsulated tablets, orally and scopolamine 0.5 mg subcutaneous injection, once, Day 1, Period 4. Each treatment period is separated by a 14-day washout period.
Arm Title
Sequence 3 (CDBA)
Arm Type
Experimental
Arm Description
Roflumilast Dose A tablets, orally, donepezil placebo-matching overencapsulated tablets, orally, and scopolamine 0.5 mg subcutaneous injection, once, Day 1, Period 1, followed by roflumilast Dose A tablets, orally, donepezil 10 mg, overencapsulated tablets, orally and scopolamine 0.5 mg subcutaneous injection, once, Day 1, Period 2, followed by roflumilast placebo-matching tablets, orally, donepezil 10 mg, overencapsulated tablets, orally and scopolamine 0.5 mg subcutaneous injection, once, Day 1, Period 3, followed by roflumilast placebo-matching tablets, orally, donepezil placebo-matching overencapsulated tablets, orally, and scopolamine 0.5 mg subcutaneous injection, once, Day 1, Period 4. Each treatment period is separated by a 14-day washout period.
Arm Title
Sequence 4 (DACB)
Arm Type
Experimental
Arm Description
Roflumilast Dose A tablets, orally, donepezil 10 mg, overencapsulated tablets, orally and scopolamine 0.5 mg subcutaneous injection, once, Day 1, Period 1, followed by roflumilast placebo-matching tablets, orally, donepezil placebo-matching overencapsulated tablets, orally, and scopolamine 0.5 mg subcutaneous injection, once, Day 1, Period 2, followed by roflumilast Dose A tablets, orally, donepezil placebo-matching overencapsulated tablets, orally, and scopolamine 0.5 mg subcutaneous injection, once, Day 1, Period 3, followed by roflumilast placebo-matching tablets, orally, donepezil 10 mg, overencapsulated tablets, orally and scopolamine 0.5 mg subcutaneous injection, once, Day 1, Period 4. Each treatment period is separated by a 14-day washout period.
Intervention Type
Drug
Intervention Name(s)
Roflumilast
Other Intervention Name(s)
Daxas
Intervention Description
Roflumilast tablets
Intervention Type
Drug
Intervention Name(s)
Roflumilast placebo
Intervention Description
Roflumilast placebo-matching tablets
Intervention Type
Drug
Intervention Name(s)
Donepezil
Other Intervention Name(s)
Aricept
Intervention Description
Donepezil overencapsulated tablets
Intervention Type
Drug
Intervention Name(s)
Donepezil placebo
Intervention Description
Donepezil placebo-matching overencapsulated tablets
Intervention Type
Drug
Intervention Name(s)
Scopolamine
Other Intervention Name(s)
Hyoscine hydrobromide
Intervention Description
Scopolamine subcutaneous injection
Primary Outcome Measure Information:
Title
Change From Baseline in the Verbal Recall Memory (VRM) Total Number of Correct Responses for Delayed Recall at 1 Hour After Scopolamine Administration
Description
VRM measures the ability to encode and subsequently retrieve verbal information. This task begins with the first presentation phase in which 18 words are shown in turn on the screen. The participant is then asked to recall as many words as possible during the first immediate recall phase. The same 18 words are then shown in a second presentation phase which is followed by a second immediate recall phase. After a delay of approximately 20-30 minutes, a delayed recall stage is completed. The possible range of correct responses is 0 (worst) to 18 (best). Higher number of correct responses in the test indicates a better outcome. A negative change from baseline indicates a worsening of the score.
Time Frame
Baseline and 1 hour after scopolamine administration on Day 1 of each treatment period. Baseline is defined as the assessment 1 hour before roflumilast/donepezil administration (3 hours before scopolamine administration).
Title
Change From Baseline in the Verbal Recall Memory (VRM) Total Number of Correct Responses for Immediate Recall at 1 Hour After Scopolamine Administration
Description
VRM measures the ability to encode and subsequently retrieve verbal information. This task begins with the first presentation phase in which 18 words are shown in turn on the screen. The participant is then asked to recall as many words as possible during the first immediate recall phase. The possible range of correct responses is 0 (worst) to 18 (best). Higher number of correct responses in the test indicates a better outcome. A negative change from baseline indicates a worsening of the score.
Time Frame
Baseline and 1 hour after scopolamine administration on Day 1 of each treatment period.
Secondary Outcome Measure Information:
Title
Change From Baseline in the Verbal Recall Memory (VRM) Total Number of Correct Responses for Immediate and Delayed Recall at 2 and 4 Hours After Scopolamine Administration
Description
VRM measures the ability to encode and subsequently retrieve verbal information. This task begins with the first presentation phase in which 18 words are shown in turn on the screen. The participant is then asked to recall as many words as possible during the first immediate recall phase. The same 18 words are then shown in a second presentation phase which is followed by a second immediate recall phase. After a delay of approximately 20-30 minutes, a delayed recall stage is completed. The possible range of correct responses is 0 (worst) to 18 (best). Higher number of correct responses in the test indicates a better outcome. A negative change from baseline indicates a worsening of the score.
Time Frame
Baseline and 2 and 4 hours after scopolamine administration on Day 1 of each treatment period.
Title
Change From Baseline in the Paired Associates Learning (PAL) Total Number of Errors Adjusted at All Time-points Assessed After Scopolamine Administration
Description
PAL assesses visuospatial associative learning and memory. Boxes are displayed on the screen and open in a randomised order to reveal a number of patterns. The patterns are then displayed in the middle of the screen, one at a time, and the participant must touch the box where the pattern was originally located. If the participant makes an error, the patterns are re-presented to remind the participant of their locations. If the participant has not responded correctly within six attempts, ie, one presentation and five re-presentations, the task is terminated. As the task progresses the difficulty level increases with the number of patterns to be remembered. For participants who fail to complete all levels, an adjusted total is calculated that takes into account errors predicted in the stages that were not attempted. The possible range for total errors is 0 (best) to 91 (worst). Fewer number of errors in the test indicates a better outcome.
Time Frame
Baseline and at 1, 2 and 4 hours after scopolamine administration on Day 1 of each treatment period.
Title
Change From Baseline in the Rapid Visual Information Processing (RVP) A Prime Signal Detection at All Time-points Assessed After Scopolamine Administration
Description
RVP is a task of continuous performance and visual sustained attention. The task consists of a 2-minute practice stage and a 7-minute assessed stage. There is a white box in the centre of the screen in which single digits from 2 to 9 appear one at a time in a pseudo-random order at a rate of 100 digits per minute. Participants must detect target sequences of digits (2-4-6, 3-5-7, and 4-6-8) and touch a button when they see the last digit of a target sequence. Nine target sequences appear every 100 numbers. A prime (A') is a signal detection measure that reflects target sensitivity regardless of the participant's tendency, or bias, to respond. Detection sensitivity for RVP A' prime: 0 to 1. Lower numbers in the test indicates worsening in the performance.
Time Frame
Baseline and at 1, 2 and 4 hours after scopolamine administration on Day 1 of each treatment period.
Title
Change From Baseline in the Rapid Visual Information Processing (RVP) Median Latency at All Time-points Assessed After Scopolamine Administration
Description
RVP is a task of continuous performance and visual sustained attention. The task consists of a 2-minute practice stage and a 7-minute assessed stage. There is a white box in the centre of the screen in which single digits from 2 to 9 appear one at a time in a pseudo-random order at a rate of 100 digits per minute. Participants must detect target sequences of digits (2-4-6, 3-5-7, and 4-6-8) and touch a button when they see the last digit of a target sequence. Nine target sequences appear every 100 numbers. Assessment will be based on a median latency. The possible range for RVP median latency is 100 (worst) to 1900 (best). Higher number in the test indicates a better outcome. "Median latency" is a measure captured by computerized test measure and given as "one" time value (between 100 and 1900). The "mean" of these values is presented.
Time Frame
Baseline and at 1, 2 and 4 hours after scopolamine administration on Day 1 of each treatment period.
Title
Change From Baseline in the Spatial Working Memory (SWM) Total Number of Between Errors at the 10-Box Stage and the 12-Box Stage at All Time-points Assessed After Scopolamine Administration
Description
SWM assesses the ability to retain spatial information and manipulate it in working memory. In this task, colored boxes are shown on the screen, and participants must search for blue tokens by touching the colored boxes to open them. When the blue token has been found the participant has to place the token in the black column ('home') on the right-hand side of the screen by touching this area. The participant must not return to a box where a token has previously been found. The task becomes more difficult as the number of boxes increases (one trial at each of 6-box and 8-box stages; three trials at each of 10-box and 12-box stages). Between Errors is the total number of times the participant revisits a box in which a token has previously been found in the same problem. The possible range of errors is 0 (best) to 1040 (worst). Lower number of errors in the test indicates a better outcome.
Time Frame
Baseline and at 1, 2 and 4 hours after scopolamine administration on Day 1 of each treatment period.
Title
Percentage of Participants Who Experience at Least 1 Treatment Emergent Adverse Event (TEAE)
Description
An Adverse Event (AE) is defined as any untoward medical occurrence in a clinical investigation participant administered a drug; it does not necessarily have to have a causal relationship with this treatment. An AE can therefore be any unfavorable and unintended sign (eg, a clinically significant abnormal laboratory finding), symptom, or disease temporally associated with the use of a drug, whether or not it is considered related to the drug. A TEAE is defined as any adverse event, regardless of relationship to study drug that occurs or worsens after the first dose of study drug and no more than 14 days after the last dose of study drug.
Time Frame
Day 1 up to Day 95
Title
Percentage of Participants With Markedly Abnormal Safety Laboratory Tests
Description
The percentage of participants with any markedly abnormal standard safety laboratory values, including hematology, serum chemistries, and urinalysis. LLN=lower limit of normal. ULN=upper limit of normal.
Time Frame
Day 1 up to Day 95
Title
Percentage of Participants With Markedly Abnormal Vital Sign Measurements at Least Once Post-dose
Description
The percentage of participants who meet markedly abnormal criteria for vital signs, including oral body temperature, respiration rate, pulse, and resting blood pressure and after standing.
Time Frame
Day 1 up to Day 95
Title
Percentage of Participants With Markedly Abnormal Criteria for Safety Electrocardiogram (ECG) Parameters at Least Once Post-Dose
Description
The percentage of participants who meet markedly abnormal criteria specified by the protocol and statistical analysis plan=abnormal clinically significant.
Time Frame
Day 1 up to Day 95
10. Eligibility
Sex
Male
Minimum Age & Unit of Time
18 Years
Maximum Age & Unit of Time
45 Years
Accepts Healthy Volunteers
Accepts Healthy Volunteers
Eligibility Criteria
Inclusion Criteria:
In the opinion of the investigator, the participant is capable of understanding and complying with protocol requirements.
The participant or, when applicable, the participant's legally acceptable representative signs and dates a written, informed consent form and any required privacy authorization prior to the initiation of any study procedures.
Is a healthy adult male.
Is aged 18 to 45 years, inclusive, at the time of informed consent.
Weighs at least 60 kg and has a body mass index (BMI) between 18 and 32 kg/m^2 inclusive at Screening.
A male participant who is nonsterilized and sexually active with a female partner of childbearing potential agrees to use adequate contraception from signing of informed consent throughout the duration of the study and for 12 weeks after last dose.
Has clinical laboratory evaluations (including clinical chemistry, hematology and complete urinalysis) within the reference range for the testing laboratory, unless the results are deemed not to be clinically significant (CS) by the investigator at screening and Day -1 (Check-in) of Period 1.
Exclusion Criteria:
Has received any investigational compound within 3 months prior to the first dose of study medication.
Has received roflumilast, donepezil, or scopolamine in a previous clinical study or as a therapeutic agent.
Is an immediate family member, study site employee, or in a dependant relationship with a study site employee who is involved in the conduct of this study (eg, spouse, parent, child, sibling) or may consent under duress.
Has uncontrolled, clinically significant neurologic, cardiovascular, pulmonary, hepatic, renal, metabolic, gastrointestinal, or endocrine disease or other abnormality which may impact the ability of the participant to participate or potentially confound the study results.
Contraindications to scopolamine: hypersensitivity to scopolamine and other belladonna alkaloids, and/or any component of the formulation, serious allergic reactions, wide and narrow angle glaucoma, gastrointestinal motility disorders (such as constipation, gastroesophageal reflux disease, irritable bowel syndrome), benign prostatic hyperplasia with urinary retention, asthma, chronic obstructive pulmonary disease (COPD), seizures, coronary artery disease, hypertension, and congestive heart failure.
Participants with existing psychiatric disease/condition including psychosis, affective disorder, anxiety disorder, borderline state and personality disorder according to the criteria in the Diagnostic and Statistical Manual of Mental Disorders, 4th edition, as assessed by the Mini International Neuropsychiatric Interview (MINI) or acute psychiatric episode within 6 months of Screening.
Has a known hypersensitivity to any component of the formulation of roflumilast, donepezil, scopolamine, or related compounds.
Has a positive urine drug result for drugs of abuse at Screening or Day -1 (Check-in) of each Period.
Has a history of drug abuse (defined as any illicit drug use) or a history of alcohol abuse within 1 year prior to the screening visit or is unwilling to agree to abstain from drug use or excessive alcohol use throughout the study.
Has taken any excluded medication, supplements, or food products listed in the Excluded Medications and Dietary Products.
Intends to donate sperm during the course of this study or for 12 weeks thereafter.
Any finding in the participant's medical history, physical examination, or safety laboratory tests giving reasonable suspicion of a disease that would contraindicate taking roflumilast, donepezil, scopolamine, or a similar drug in the same class, or that might interfere with the conduct of the study. This includes, but is not limited to, peptic ulcer disease, seizure disorders, and cardiac arrhythmias.
Has current or recent (within 6 months) gastrointestinal disease that would be expected to influence the absorption of drugs (ie, a history of malabsorption, esophageal reflux, peptic ulcer disease, or erosive esophagitis, frequent [more than once per week] occurrence of heartburn.
Has had any surgical intervention within 6 months that may impact the bioavailability of the compound (eg, cholecystectomy, bariatric surgery).
Has a history of cancer within the past 5 years prior to the first dose of study medication. This criterion does not include those participants with basal cell or stage I squamous cell carcinoma of the skin who are eligible.
Has a positive test result for hepatitis B surface antigen (HBsAg), hepatitis C antibody (HCV), human immunodeficiency virus (HIV) antibody/antigen at Screening.
Has used nicotine-containing products (including but not limited to cigarettes, pipes, cigars, chewing tobacco, nicotine patch or nicotine gum) within 28 days prior to Check-in on Day -1 (Check-in of Period 1).
Cotinine test is positive at Screening or Check-in (Day -1 of each Period).
Has poor peripheral venous access.
Has donated or lost 450 mL or more of his or her blood volume (including plasmapheresis), or had a transfusion of any blood product within 3 months prior to Day 1 of Period 1.
Has a Screening or Day -1 (Check-in) of Period 1 abnormal (clinically significant) electrocardiogram (ECG). Entry of any participant with an abnormal (not clinically significant) ECG must be approved, and documented by signature by the principal investigator or qualified delegate.
Has abnormal Screening or Day -1 (Check-in) of Period 1 laboratory values that suggest a clinically significant underlying disease or participant with the following lab abnormalities: alanine aminotransferase (ALT) and/or aspartate aminotransferase (AST) >1.5 the upper limits of normal.
Has a current diagnosis or history of glaucoma or had a first-degree relative diagnosed with glaucoma.
Has a risk of suicide according to the investigator's clinical judgment (eg, per Columbia-Suicide Severity Rating Scale (C-SSRS) or has made a suicide attempt in the previous 6 months).
Has a history of depression associated with suicidal thinking and/or behavior.
26. In the opinion of the investigator or sponsor, the participant is unsuitable for inclusion in the study.
Overall Study Officials:
First Name & Middle Initial & Last Name & Degree
AstraZeneca AstraZeneca
Organizational Affiliation
AstraZeneca
Official's Role
Study Director
Facility Information:
City
London
Country
United Kingdom
12. IPD Sharing Statement
Learn more about this trial
Roflumilast and Donepezil to Reverse Scopolamine Induced Cognitive Deficits in Healthy Adults
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