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Alzheimer's Disease - Input of Vitamin D With mEmantine Assay

NCT01409694 · Status: COMPLETED · Phase: PHASE3 · Type: INTERVENTIONAL · Enrollment: 90

Last updated 2016-09-22

No results posted yet for this study

Summary

The purpose of this study is to compare the effect after 24 weeks of the oral intake of vitamin D3 (cholecalciferol) with the effect of a placebo on the change of cognitive performance in patients suffering from moderate Alzheimer's disease or related disorders (ADRD) and receiving memantine.

Conditions

  • Alzheimer Disease

Interventions

DRUG

Memantine

Memantine is administered to all participants according to the usual strategy, with upward titration of 5 mg per week during the first three weeks to reduce the risk of side effects. The final dosage is 20 mg per day, with no subsequent modification of dosage or specialty during the trial.

DRUG

Vitamin D

Subjects receive Vitamin D supplementation (cholecalciferol 100,000 IU, drinking solution, 2 mL vial) at a rate of 1 drinking vial of 100,000 IU cholecalciferol every month. In brief, the total dose is 600,000 IU over the duration of the study starting with one vial at the time of inclusion, then at week(W) 4, W8, W12, W16 and W20. The dose of vitamin D supplementation will not be adjusted except in case of an adverse event such as hypercalcemia. In this case, vitamin D supplementation is stopped and the participant is released prematurely from the study.

DRUG

Vitamin D placebo

Subjects receive Vitamin D placebo (drinking solution, 2mL vial) at a rate of 1 drinking vial every month. In brief, the subjects start with one vial at the time of inclusion, then at week(W)4, W8, W12, W16 and W20. The placebo drinking solution contains all the excipients present in the Vitamin D vial.

Sponsors & Collaborators

  • University Hospital, Angers

    lead OTHER_GOV

Principal Investigators

  • Cédric Annweiler, MD, PhD · Angers University Hospital

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
QUADRUPLE
Model
PARALLEL

Eligibility

Min Age
60 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2011-09-30
Primary Completion
2016-01-31
Completion
2016-01-31

Countries

  • France

Study Locations

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Entities

Drugs

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT01409694 on ClinicalTrials.gov