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A randomised controlled trial of calcium channel blockade (CCB) with Amlodipine For the treatment oF subcortical ischaEmic vasCular demenTia (AFFECT): Study protocol

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posted on 2016-10-10, 15:10 authored by Caroline Greenan, Lynn Murphy, Ly-Mee Yu, Patrick G. Kehoe, Elizabeth Coulthard, Philip Bath, Robert Stewart, Rob Jones, Anne Corbett, Alan Thomas, Peter Connelly, Frank Arrojo, Rachel Canning, Sylvia Wallach, Catherine Henderson, Bernadette McGuinness, Mike O'Sullivan, Clive Holmes, Martin Knapp, Clive Ballard, Peter Passmore, E. Jackson, R. Soiza, V. Raymont, L. Velayudhan, R. Vanderputt, S. Pearson, R. Lawrence, F. Harrington
Background: Vascular dementia is the second most common cause of dementia affecting over seven million people worldwide, yet there are no licensed treatments. There is an urgent need for a clinical trial in this patient group. Subcortical ischaemic vascular dementia is the most common variant of vascular dementia. This randomised trial will investigate whether use of calcium channel blockade with amlodipine, a commonly used agent, can provide the first evidence-based pharmacological treatment for subcortical ischaemic vascular dementia. Methods/Design: This is a randomised controlled trial of calcium channel blockade with Amlodipine For the treatment oF subcortical ischaEmic vasCular demenTia (AFFECT) to test the hypothesis that treatment with amlodipine can improve outcomes for these patients in a phase IIb, multi-centre, double-blind, placebo-controlled randomised trial. The primary outcome is the change from baseline to 12 months in the Vascular Dementia Assessment Scale cognitive subscale (VADAS-cog). Secondary outcomes include cognitive function, executive function, clinical global impression of change, change in blood pressure, quantitative evaluation of lesion accrual based on magnetic resonance imaging (MRI), health-related quality of life, activities of daily living, non-cognitive dementia symptoms, care-giver burden and care-giver health-related quality of life, cost-effectiveness and institutionalisation. A total of 588 patients will be randomised in a 1:1 ratio to either amlodipine or placebo, recruited from sites across the UK and enrolled in the trial for 104 weeks. Discussion: There are no treatments licensed for vascular dementia. The most common subtype is subcortical ischaemic vascular dementia (SIVD). This study is designed to investigate whether amlodipine can produce benefits compared to placebo in established SIVD. It is estimated that the numbers of people with VaD and SIVD will increase globally in the future and the results of this study should inform important treatment decisions. Trial registration: Current Controlled Trials ISRCTN31208535. Registered on 7 March 2014.

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Citation

Trials, 2016, 17:324

Author affiliation

/Organisation/COLLEGE OF MEDICINE, BIOLOGICAL SCIENCES AND PSYCHOLOGY/School of Medicine/Department of Health Sciences

Version

  • VoR (Version of Record)

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Trials

Publisher

BioMed Central

issn

1745-6215

Acceptance date

2016-06-17

Copyright date

2016

Available date

2016-10-10

Publisher version

http://trialsjournal.biomedcentral.com/articles/10.1186/s13063-016-1449-3

Language

en

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