Efficacy of Cholecalciferol (Vitamin D3) for Delaying the Diagnosis of MS After a Clinically Isolated Syndrome
D-Lay-MS
Multicentric, Randomized, Double-blind Versus Placebo Study Evaluating the Efficacy of Treatment With Cholecalciferol (Vitamin D3) for Delaying the Diagnosis of Multiple Sclerosis (MS) After a Clinically Isolated Syndrome (CIS). Comparison of Conversion Rates After 2 Years.
2 other identifiers
interventional
316
2 countries
33
Brief Summary
The main objective of this study is to evaluate the efficacy and tolerance of 2 years of treatment with cholecalciferol (vitamin D3) in patients with a clinically isolated syndrome at high risk for MS (CIS).
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P50-P75 for phase_3 multiple-sclerosis
Started Jul 2013
Longer than P75 for phase_3 multiple-sclerosis
33 active sites
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
Click on a node to explore related trials.
Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
March 20, 2013
CompletedFirst Posted
Study publicly available on registry
March 22, 2013
CompletedStudy Start
First participant enrolled
July 16, 2013
CompletedPrimary Completion
Last participant's last visit for primary outcome
January 4, 2023
CompletedStudy Completion
Last participant's last visit for all outcomes
January 4, 2023
CompletedJanuary 12, 2024
January 1, 2024
9.5 years
March 20, 2013
January 11, 2024
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
Conversion to MS yes/no
Conversion to MS according to criteria described by McDonald (Polman et al 2005)
24 months
Secondary Outcomes (75)
Number of relapse episodes (number per year)
24 months
number of new brain lesions found in FLAIR MRI or medullary lesions found in T2 MRI
3 months
number of new brain lesions found in FLAIR MRI or medullary lesions found in T2 MRI
12 months
number of new brain lesions found in FLAIR MRI or medullary lesions found in T2 MRI
24 months
Number of new T1 lesions taking on Gadolinium highlighting
3 months
- +70 more secondary outcomes
Other Outcomes (71)
DNA sample (blood sample) for biobank
baseline
Hemogram
baseline
Hemogram
3 months
- +68 more other outcomes
Study Arms (2)
Placebo
PLACEBO COMPARATORPatients in this arm will receive a placebo treatment mimicking 100.000 UI of cholecalciferol every 14 days for a maximum of 24 months or until conversion to full multiple sclerosis has occurred. Intervention: Placebo Intervention: Imaging Intervention: Lumbar puncture Intervention: Blood sampling Intervention: Urine samples
Vit D
EXPERIMENTALPatients in this arm will receive 100.000 UI of cholecalciferol every 14 days for a maximum of 24 months or until conversion to full multiple sclerosis has occurred. Intervention: Vitamin D Intervention: Imaging Intervention: Lumbar puncture Intervention: Blood sampling Intervention: Urine samples
Interventions
Patients will receive 100.000 UI of cholecalciferol every 14 days for a maximum of 24 months or until conversion to full multiple sclerosis has occurred.
Patients will receive a placebo treatment mimicking 100.000 UI of cholecalciferol every 14 days for a maximum of 24 months or until conversion to full multiple sclerosis has occurred.
All patients are scheduled for MRI scans at baseline, 3 months, 12 months, 24 months, as well as upon conversion to full MS.
A baseline collection of cerebral spinal fluid may be required for certain patients (doctor's decision.)
Blood sampling is required of all patients at baseline, 3 months, 6 months, 12 months, 18 months and 24 months, as well as upon conversion to MS.
Urine samples are required of all patients at baseline, 3 months, 6 months, 12 months, 18 months, 24 months, and upon conversion to MS.
Eligibility Criteria
You may qualify if:
- The patient must have given his/her informed and signed consent
- The patient must be insured or beneficiary of a health insurance plan
- The patient is available for 24 months of follow-up
- The patient has had a classic CIS with the past 90 days
- Reference cerebro-medullary MRI scheduled within the 90 days after the beginning of symptoms
- With MRI (cerebro ± medullary) showing demyelination according to spatial spread criteria by Swanton (2006):
- At least 1 lesion in at least 2 of the 4 following territories: (1) Peri-ventricular; (2) Juxta-cortical; (3) Sub-tentorial; (4) Medullary
- No other suspected pathology
- Women of childbearing potential must use very effective contraception for the duration of the study. A very effective contraceptive method is defined as a method resulting in a low failure rate (that is to say less than 1% per year) when used consistently and correctly, such as implants, injectables, combined oral contraceptives, IUDs, sexual abstinence, or partner with a vasectomy.
- Randomisation stratification criteria:
- The patient can also also meet the temporal dissemination criteria defined according to McDonald criteria 2010 (Polman et al., 2011), because this condition is currently not sufficient for prescribing a background treatment: Simultaneous presence of at least one asymptomatic lesion taking on contrast and at least one asymptomatic lesion not taking on contrast after injection of gadolinium
You may not qualify if:
- The patient is participating in another study (this criteria does not apply to the POLAR study (RCB 2011-A01269-32); patients included in this study may simultaneously participate in the POLAR study)
- The patient is under judicial protection, under tutorship or curatorship
- The patient refuses to sign the consent
- It is impossible to correctly inform the patient
- The patient is pregnant, parturient, or breastfeeding
- Major medical or psychiatric illness that, according to the investigator, would result in the patient running an unnecessary risk or that could affect compliance with the study protocol
- Vitamin D insufficiency linked to currently active digestive or more general diseases (celiac disease, inflammatory bowel disease, intestinal bypass, short bowel syndrome, cirrhosis, nephrotic syndrome, hyperthyroidism, rickets, hypoparathyroidism, cancer, granulomatous diseases and lymphomas)
- Moderate or severe renal insufficiency (creatinine clearance less than 60 ml / min)
- Epilepsy not adequately controlled by treatment
- Any illness requiring chronic treatment with corticosteroids
- Patient with osteoporosis or history of osteopenia
- Pathology requiring calcium intakes greater than 1 gram per day
- Current or past history of hypercalcemia
- Medications that affect the metabolism of vitamin D other than corticosteroids; e.g. anticonvulsants \[phenobarbital, primidone, phenytoin\] rifampicin, isoniazid, ketoconazole, 5-FU and leucovorin, thiazide diuretics.
- Situations accompanied by increased vulnerability to hypercalcemia, e.g. arrhythmia or known heart disease, treatment with digitalis, and subjects with nephrolithiasis.
- +2 more criteria
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (33)
CHU d'Amiens - Hôpital Nord
Amiens, 80054, France
CHU de Lyon - Hôpital Pierre Wertheimer
Bron, 69677, France
CHU de Caen - Hôpital Côte de Nacre
Caen, 14033, France
CHU de Clermont Ferrand - Hôpital Gabriel-Montpied
Clermont-Ferrand, 63003, France
CH Sud Francilien
Corbeil-Essonnes, 91100, France
Clinique des Cèdres - Capio
Cornebarrieu, 31700, France
CHU de Dijon
Dijon, 21079, France
CHU de Grenoble - Hôpital A Michallon
Grenoble, 38043, France
CHRU de Lille - Hôpital Roger Salengro
Lille, 59037, France
CHU de Limoges - Hôpital Dupuytren
Limoges, 87042, France
Groupe Hospitalier de l'Institut Catholique de Lille
Lomme, 59462, France
CHU de Montpellier - Hôpital Gui de Chauliac
Montpellier, 34295, France
CHU de Nancy - Hôpital Central
Nancy, 54035, France
CHU de Nantes - Hôtel-Dieu
Nantes, 44093, France
CHU de Nice - Hôpital Pasteur
Nice, 06002, France
CHU de Nîmes - Hôpital Universitaire Carémeau
Nîmes, 30029, France
MAILLART Elisabeth - La Pitié Salpétrière
Paris, 75013, France
Fondation Ophtalmologique Adolphe Rothschild
Paris, 75019, France
APHP - Hôpital Saint-Antoine
Paris, 75571, France
CH de Pau
Pau, 64000, France
CH de Perpignan - Hôpital Saint Jean
Perpignan, 66046, France
CH de Cornouaille - Site Quimper - Hôpital Laennec
Quimper, 29107, France
CHU de Reims - Hôpital Maison Blanche
Reims, 51092, France
CHU de Rennes - Hôpital PontChaillou
Rennes, 35033, France
CHU de Rouen - Hôpital Charles Nicolle
Rouen, 76031, France
CH de Poissy - Saint-Germain-en-Laye
Saint-Germain-en-Laye, 78100, France
CH de Saumur
Saumur, 49403, France
CHRU de Strasbourg - Hôpital Civil
Strasbourg, 67091, France
CHRU de Toulouse - Hôpital Purpan
Toulouse, 31059, France
CHRU de Tours - Hôpital Bretonneau
Tours, 37044, France
CH de Versailles - Hôpital Mignot
Versailles, 78000, France
CH de Vichy - Jacques Larin
Vichy, 03207, France
CHU de Martinique - Hôpital Pierre Zobda-Quitman
Fort-de-France, 97200, Martinique
Related Publications (1)
Thouvenot E, Laplaud D, Lebrun-Frenay C, Derache N, Le Page E, Maillart E, Froment-Tilikete C, Castelnovo G, Casez O, Coustans M, Guennoc AM, Heinzlef O, Magy L, Nifle C, Ayrignac X, Fromont A, Gaillard N, Caucheteux N, Patry I, De Seze J, Deschamps R, Clavelou P, Biotti D, Edan G, Camu W, Agherbi H, Renard D, Demattei C, Fabbro-Peray P, Mura T, Rival M; D-Lay MS Investigators. High-Dose Vitamin D in Clinically Isolated Syndrome Typical of Multiple Sclerosis: The D-Lay MS Randomized Clinical Trial. JAMA. 2025 Apr 22;333(16):1413-1422. doi: 10.1001/jama.2025.1604.
PMID: 40063041DERIVED
MeSH Terms
Conditions
Interventions
Condition Hierarchy (Ancestors)
Intervention Hierarchy (Ancestors)
Study Officials
- STUDY DIRECTOR
Eric Thouvennot, MD, PhD
Centre Hospitalier Universitaire de Nîmes
- PRINCIPAL INVESTIGATOR
Eric Thouvenot, MD, PhD
Centre Hospitalier Universitaire de Nîmes
Study Design
- Study Type
- interventional
- Phase
- phase 3
- Allocation
- RANDOMIZED
- Masking
- TRIPLE
- Who Masked
- PARTICIPANT, INVESTIGATOR, OUTCOMES ASSESSOR
- Purpose
- PREVENTION
- Intervention Model
- PARALLEL
- Sponsor Type
- OTHER
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
March 20, 2013
First Posted
March 22, 2013
Study Start
July 16, 2013
Primary Completion
January 4, 2023
Study Completion
January 4, 2023
Last Updated
January 12, 2024
Record last verified: 2024-01