A Phase 3 interventional study of Omega-3 treatment and Placebo in Alzheimer Disease, sponsored by University Hospital, Toulouse. Completed at 1 site in France. Open to participants aged 70 Years and older. Per ClinicalTrials.gov, last updated 2023-08-24.
Sponsored by University Hospital, Toulouse · Phase 3, Interventional, and Prevention
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.
3,678 studies on the registry are indexed under Alzheimer Disease; 872 are open to participants now.
This study's enrollment of 774 is above the median of 70 across 2,808 interventional studies indexed under Alzheimer Disease.
Browse Alzheimer Disease studies →University Hospital, Toulouse is the lead sponsor of 794 studies on the registry; 214 are open to participants now.
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Exclusion Criteria:
During the 18 months placebo-controlled period, participants will ask to consume 3 identical 1g vegetarian control capsules (containing a 1:1 ratio of corn oil and soy oil) per day. During the following 18-month open-label extension period, placebo subjects are switched to active treatment. 36 months consisting of a 18-month placebo-controlled period followed by a 18-month open-label extension period wherein all participants will receive active treatment
Dietary Supplement: Placebo
During the entire length of the study (that is, both the placebo-controlled and open-label extension periods), participants in the intervention (Omega-3 treatment) arm will ask to consume 3- 1g softgel vegetarian capsules of DHA-O per day as a single dose for 36 months; each 1g capsule of DHA-0 providing 324 mg DHA and 185 mg EPA (total daily DHA+EPA dose = 1.53 g/day).
Drug: Omega-3 treatment
Patient in the "treatment comparative arm will consume 3- 1g softgel vegetarian capsules of DHA-O per day as a single dose for 36 months; each 1g capsule of DHA-0 providing 324 mg DHA and 185 mg EPA (total daily DHA+EPA dose = 1.53 g/day).
Also known as: Dietary intervention
The appearance and taste of the placebo will be similar to those of the active ingredient. Placebo capsules contained a 1:1 ratio of corn oil and soy oil. 36 months consisting of a 18-month placebo-controlled period followed by a 18-month open-label extension period wherein all participants will receive active treatment. Active treatment consists of 1.53 g /day dose of DHA-0 (972 mg /day DHA + 555 mg /day EPA; 3 caps /day). For the 18 months placebo-controlled period (n=200/arm): 1.53 g /day dose of DHA-0 (972 mg /day DHA + 555 mg /day EPA; 3 caps /day) or placebo (3 similar pills /day).
Change from Baseline of Composite Z-score which evaluate cognitive performance
This composite score will be built of Z-scores of these components. As this criterion will be assessed during each visit (the enrolment visit and the 4 follow-up visits), the analysis will be carried out by taking repeat measurements, taking the correlated of the data into consideration, evaluating Change from Baseline
Time frame: 18 months
FCSRT Test
Tests included in the composite score will be analyzed independently The Free and Cued Selective Reminding test (FCSRT) is a memory test that controls attention and acquisition : Verbal learning with 16-word free and indexed recall test. Each word is identified by a semantic category. Word encoding is controlled. The total learning score is equal to the sum of the free and indexed recall. The maximum score is 48.
Time frame: 18 months
MMSE total score
MMSE (MINI MENTAL STATE EXAMINATION) total score : 30-question general cognitive function assessment. The maximum score is 30.
Time frame: 18 months
Category Naming Test (CNT)
The CNT is a semantic verbal fluency test which assesses spontaneous production of words belonging to the same category within a certain time (i.e. the animal category).
Time frame: 18 months
Plan to share: No
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University Hospital, Toulouse