Alzheimer Disease Clinical Trial
Official title:
Prevention of Cognitive Decline in Older Adults With Low Dha/Epa Index in Red Blood Cells
LO MAPT is an 18-month, phase III, multicenter, randomized, placebo-controlled, 2 parallel groups trial, followed by a 18-month open-label extension phase, to evaluate the efficacy of omega-3 supplementation on cognitive decline in older adults with low DHA/EPA status and subjective memory complaints or family history of Alzheimer disease.
LO-MAPT will also assess the effect of an audiovisual aid, compared with traditional paper participant information sheet only, on participants' understanding of the protocol, as well as on drop-out, adherence and clinical outcome in older adults at risk of cognitive decline. In addition to the main LO-MAPT study procedures, in two centers, half of the subjects will receive an audiovisual aid in addition to the standard information sheet. The primary objective of LO MAPT is to demonstrate the efficacy of a 18-month intervention with a supplementation of omega-3 (DHA+EPA) on cognitive decline as measured by a composite score of neuropsychological assessments in older adults with low DHA/EPA status (RBC DHA/EPA index ≤ 4.83%) and subjective memory complaints or family history of Alzheimer's disease. Subjects will be randomly assigned in a 1:1 ratio to one of the following 2 groups: (i) DHA+EPA supplement or (ii) placebo. A computer-generated randomisation procedure will be used with stratification by centre. A centralised Interactive Voice Response System will be used to identify which group to allocate and which lot number to administer. A document describing the randomization procedure will be kept confidentially by the Methodology and Data Management Centre. All participants and study staff will be blinded to DHA+EPA supplement/placebo assignment: all participants will receive soft capsules of exactly the same appearance and taste. ;
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