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Clinical Trial Details — Status: Terminated

Administrative data

NCT number NCT01014858
Other study ID # 5137
Secondary ID 08/13/14
Status Terminated
Phase Phase 3
First received November 16, 2009
Last updated September 21, 2017
Start date January 2013
Est. completion date September 2014

Study information

Verified date September 2017
Source Newcastle-upon-Tyne Hospitals NHS Trust
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

To demonstrate the superiority of donepezil over placebo in improving cognitive function, neuropsychiatric burden and functional ability in people with Parkinson's disease and mild dementia after 24 months of treatment.

To demonstrate the superiority of donepezil over placebo in improving patient and carer quality of life and to establish the cost-effectiveness of donepezil.

To determine the instrument most suitable for evaluating change in cognition in people with Parkinson's disease and mild dementia.


Recruitment information / eligibility

Status Terminated
Enrollment 64
Est. completion date September 2014
Est. primary completion date September 2014
Accepts healthy volunteers No
Gender All
Age group 18 Years and older
Eligibility Inclusion Criteria:

1. A diagnosis of Parkinson's disease according to UK Parkinson's Disease Society Brain Bank Criteria. These criteria are in standard use throughout the NHS in the UK and were supported by the NICE guidelines.

2. People with mild dementia associated with PD, where the patient and/or their family have become aware of cognitive with or without behavioural symptoms that are causing functional impairment. "Dementia" will be defined according to recently published Movement Disorder Society Task Force criteria for dementia associated with Parkinson's Disease and "operationalised" using the Addenbrooke's Cognitive Examination (ACE-R). The ACE-R permits some description of the dementia profile and also quantifies global impairment. It is increasingly used by clinicians in the UK to identify demented subjects, is relatively quick to perform (15 minutes or so), requires no specific training and produces a total score (0-100), from which the MMSE (0-30) can also be extracted. Participants will have an ACE-R of 88 or less. If this criterion is met, subjects will be further assessed using the Mattis Dementia Rating Scale (DRS-2). An age- and education-corrected total DRS-2 score of less than 8 but greater than 4 (corresponding to between the 6th and 28th percentile) will be used to define "mild" dementia".

3. Community-living and a spouse, close relative or well established carer to accompany the subject to act as an informant.

4. Where relevant, women of child bearing potential must be using adequate contraception for duration of study.

Exclusion Criteria:

1. Dementia that develops within one year of the onset of motor symptoms. The reason for this "one year rule" is to specifically exclude participants with Dementia with Lewy Bodies (DLB). This exclusion criterion is consistent with recommendations made in the Movement Disorder Society Dementia Task Force Diagnostic Criteria and the Third Report of the DLB Consortium.

2. People with such severe motor disability, or who are so impaired in their activities of daily living from other aspects of their PD, that it would interfere with cognitive and global assessments.

3. Severe current depressive episode. Low mood may impact upon accurate cognitive assessment and major depression is therefore listed as a feature which, when present, makes it impossible to reliably diagnose PDD in the Movement disorder Society Task Force PDD Criteria. This will be operationalised using the self-completed Beck Depression Inventory and a cut-off score of 13, as recommended by a recent Movement Disorder Society Task Force report. The BDI score is considered robust in the face of mild to moderate cognitive impairment.

4. Unstable significant medical co-morbidity.

5. Patient receiving an anticholinergic drug for control of parkinsonian motor symptoms.

6. Previous exposure to a cholinesterase inhibitor

7. Presence of a condition that is contraindicative to use of donepezil (including a clinically significant cardiac conduction defect found in patient history or from screening ECG); see SmPC (Appendix W) for details.

8. Allergy/hypersensitivity to excipients of donepezil or placebo

9. Patient receiving the N-methyl-d-aspartate antagonist memantine.

10. Previous neurosurgery for Parkinson's disease. This will apply to only a small minority of predominantly younger cases. The main reason for this exclusion relates to ongoing uncertainty over the potential confounding effects of deep brain stimulation upon both mood and cognition.

Study Design


Related Conditions & MeSH terms


Intervention

Drug:
Donepezil
5mg donepezil daily for first 8 weeks and then increased to 10mg daily for the remainder of the study.

Locations

Country Name City State
United Kingdom Royal United Hospital (RUH) Bath NHS Bath
United Kingdom Sandwell and West Birmingham NHS Foundation Trust Birmingham
United Kingdom Steps and Pines, Southmead Hospital Bristol
United Kingdom Pennine Acute Hospitals NHS Trust Bury
United Kingdom Cambridge Centre for Brain Repair Cambridge
United Kingdom Dr Lakmali Sugathapala Derby
United Kingdom Royal Bournemouth & Christchurch Hospitals NHS Foundation Trust Dorset
United Kingdom NHS Greater Glasgow and Clyde Glasgow
United Kingdom Dr Pippa Metcalf Gloucester
United Kingdom Llandudno Hospital, Betsi Cadwaladr University Health Board & School of Medical Sciences Llandudno
United Kingdom King's College Hospital NHS Foundtion Trust London
United Kingdom Manchester Mental Health & Social Care NHS Trust Manchester
United Kingdom Milton Keynes Milton Keynes
United Kingdom Newcastle Newcastle Upon Tyne Tyne and Wear
United Kingdom Royal Gwent Hospital Newport
United Kingdom North Tyneside General Hospital Northumberland
United Kingdom Norfolk and Norwich University Hospitals NHS Foundation Trust Norwich
United Kingdom Oxford University Hospitals NHS Foundation Trust Oxford
United Kingdom Plymouth Hospitals NHS Trust Plymouth
United Kingdom Poole Hospital NHS Trust Poole
United Kingdom Southampton General Hospital Southampton
United Kingdom Dr Dhakam Surrey

Sponsors (11)

Lead Sponsor Collaborator
Newcastle-upon-Tyne Hospitals NHS Trust Bangor University, King's College London, Lancashire Care NHS Foundation Trust, London School of Economics and Political Science, Newcastle University, University College, London, University of Birmingham, University of Cambridge, University of Manchester, University of Newcastle Upon-Tyne

Country where clinical trial is conducted

United Kingdom, 

Outcome

Type Measure Description Time frame Safety issue
Primary To demonstrate the superiority of donepezil over placebo in improving cognitive function, neuropsychiatric burden and functional ability in people with Parkinson's disease and mild dementia after 24 months of treatment. After 24 month of treatment
Secondary To demonstrate the superiority of donepezil over placebo in improving patient and carer quality of life and to establish the cost-effectiveness of donepezil. 26, 52 and 104 weeks
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