Multiple SclerosisPhase 3D-Lay-MSNCT01817166
Efficacy of Cholecalciferol (Vitamin D3) for Delaying the Diagnosis of MS After a Clinically Isolated Syndrome
A Phase 3 study testing Vitamin D, Imaging and Lumbar puncture in people with Multiple Sclerosis, run by Centre Hospitalier Universitaire de Nīmes at 33 sites in 2 countries.
Trial 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). Read more about this study
- Who is it for?
- Ages 18 to 56 years
- Conditions the study is for
- Multiple Sclerosis
- What is being tested?
- Vitamin D, Imaging and Lumbar puncture
- Could I receive a placebo?
- Yes, some participants may receive a placebo
- How many people
- 316 participants
- Where
- 33 sitesin 2 countries
- Study dates
- 16 Jul 2013to 4 Jan 2023
- Phase
- Phase 3
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 56 years
- All sexes
- No healthy volunteers
- Adult
Who may be able to join
- 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):
Show all 12Show fewer
- 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
- Vitamin D level in blood less than 100 nmol / l at the pre-inclusion visit
- 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
Who cannot join
- 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 in an exclusion period determined by a previous 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
Show all 18Show fewer
- 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.
- Contraindications to vitamin D3 as mentioned in the documentation for UVEDOSE
- Known hypersensitivity to gadolinium and / or known inability to undergo an MRI (pacemaker, osteosynthesis material, intraocular metal splinter, etc ....).
Trial locations and contacts
33 sites in 2 countries.
33 sites in 2 countries
France32 sites
CHU d'Amiens - Hôpital Nord
Amiens, 80054
CHU de Lyon - Hôpital Pierre Wertheimer
Bron, 69677
CHU de Caen - Hôpital Côte de Nacre
Caen, 14033
CHU de Clermont Ferrand - Hôpital Gabriel-Montpied
Clermont-Ferrand, 63003
CH Sud Francilien
Corbeil-Essonnes, 91100
Clinique des Cèdres - Capio
Cornebarrieu, 31700
CHU de Dijon
Dijon, 21079
CHU de Grenoble - Hôpital A Michallon
Grenoble, 38043
CHRU de Lille - Hôpital Roger Salengro
Lille, 59037
CHU de Limoges - Hôpital Dupuytren
Limoges, 87042
Groupe Hospitalier de l'Institut Catholique de Lille
Lomme, 59462
CHU de Montpellier - Hôpital Gui de Chauliac
Montpellier, 34295
CHU de Nancy - Hôpital Central
Nancy, 54035
CHU de Nantes - Hôtel-Dieu
Nantes, 44093
CHU de Nice - Hôpital Pasteur
Nice, 06002
CHU de Nîmes - Hôpital Universitaire Carémeau
Nîmes, 30029
MAILLART Elisabeth - La Pitié Salpétrière
Paris, 75013
Fondation Ophtalmologique Adolphe Rothschild
Paris, 75019
APHP - Hôpital Saint-Antoine
Paris, 75571
CH de Pau
Pau, 64000
CH de Perpignan - Hôpital Saint Jean
Perpignan, 66046
CH de Cornouaille - Site Quimper - Hôpital Laennec
Quimper, 29107
CHU de Reims - Hôpital Maison Blanche
Reims, 51092
CHU de Rennes - Hôpital PontChaillou
Rennes, 35033
CHU de Rouen - Hôpital Charles Nicolle
Rouen, 76031
CH de Poissy - Saint-Germain-en-Laye
Saint-Germain-en-Laye, 78100
CH de Saumur
Saumur, 49403
CHRU de Strasbourg - Hôpital Civil
Strasbourg, 67091
CHRU de Toulouse - Hôpital Purpan
Toulouse, 31059
CHRU de Tours - Hôpital Bretonneau
Tours, 37044
CH de Versailles - Hôpital Mignot
Versailles, 78000
CH de Vichy - Jacques Larin
Vichy, 03207
Martinique1 site
CHU de Martinique - Hôpital Pierre Zobda-Quitman
Fort-de-France, 97200
About this study
Official title: 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.
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).
Read the detailed description
The secondary objectives of this study are:
- evaluate clinical efficacy: delay to conversion; number of relapses/episodes per year B. evaluate efficacy in terms of resonance imaging parameters (cerebral/spinal MRI) C. evaluate efficacy in terms of slowing the progression of disability as measured by EDSS score and subscores D. measure and assess cognitive abilities (PASAT) E. evaluate changes in quality of life (EQ5D questionnaires, SF36, and TLS-TLS-QoL10 COPING10), fatigue questionnaire (FSMC) and anxiety / depression questionnaire (HADS) F. evaluate treatment tolerance G. to correlate changes in clinical and imaging parameters with the evolution of serum levels of 25(OH)D2 and 25(OH)D3 H. establish a biobank of DNA and RNA from all patients in the study and conduct analyses of gene polymorphisms involved in the metabolism of vitamin D and the HLA system based on the increased levels of vitamin D after supplementation I. establish a biobank of CSF, plasma, blood cells, serum and RNA samples for patients in selected centers for research on prognostic biomarkers of conversion J. establish a biobank consisting of plasma tubes collected for the determination of 25-hydroxy-vitamin D K. Estimate the rate of discordance between the conversion decision made by the study neurologist and the result of the MRI re-interpretation performed at the end of the study as well as the proportion of patients identified a posteriori as as erroneously included according to the centralized reading.
- Conditions
- Multiple Sclerosis
- Being tested
- Vitamin D, Placebo, Imaging, Lumbar puncture, Blood sampling
- Keywords
- cholecalciferol, vitamin D, immune disease, clinically isolated syndrome
- Medical subject headings
- Multiple Sclerosis, Immune System Diseases
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Vitamin DDrug
Also called Cholecalciferol
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.
PlaceboDrug
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.
ImagingOther
Also called Cerebro-medullar MRI
All patients are scheduled for MRI scans at baseline, 3 months, 12 months, 24 months, as well as upon conversion to full MS.
Lumbar punctureBiological
A baseline collection of cerebral spinal fluid may be required for certain patients (doctor's decision.)
Blood samplingBiological
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 samplesBiological
Urine samples are required of all patients at baseline, 3 months, 6 months, 12 months, 18 months, 24 months, and upon conversion to MS.
| Study group | Role | What they receive |
|---|---|---|
| Placebo | Placebo comparator | Patients 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 Receives: Drug: Placebo; Other: Imaging; Biological: Lumbar puncture; Biological: Blood sampling; Biological: Urine samples |
| Vit D | Experimental | Patients 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 Receives: Drug: Vitamin D; Other: Imaging; Biological: Lumbar puncture; Biological: Blood sampling; Biological: Urine samples |
What is being measured
The primary outcome is the main question the study is designed to answer.
Conversion to MS yes/no
Conversion to MS according to criteria described by McDonald (Polman et al 2005)
Measured: 24 months
Secondary outcomes (75)
Number of relapse episodes (number per year)
Measured: 24 months
number of new brain lesions found in FLAIR MRI or medullary lesions found in T2 MRI
Measured: 3 months
number of new brain lesions found in FLAIR MRI or medullary lesions found in T2 MRI
Measured: 12 months
number of new brain lesions found in FLAIR MRI or medullary lesions found in T2 MRI
Measured: 24 months
Number of new T1 lesions taking on Gadolinium highlighting
qualitative variable: 0, 1, or >1
Measured: 3 months
Number of new T1 lesions taking on Gadolinium highlighting
qualitative variable: 0, 1, or >1
Measured: 12 months
Number of new T1 lesions taking on Gadolinium highlighting
qualitative variable: 0, 1, or >1
Measured: 24 months
Number of hyposignal T1 lesions (black holes)
Measured: 3 months
Number of hyposignal T1 lesions (black holes)
Measured: 12 months
Number of hyposignal T1 lesions (black holes)
Measured: 24 months
Lesional burden in mm^3 for each cerebral MRI
Measured: 3 months
Lesional burden in mm^3 for each cerebral MRI
Measured: 12 months
Lesional burden in mm^3 for each cerebral MRI
Measured: 24 months
Total number of Gadolinium highlighted lesions on T1 images
Exact number (semiautomatic measure)
Measured: 3 months
Total number of Gadolinium highlighted lesions on T1 images
Exact number (semiautomatic measure)
Measured: 12 months
Total number of Gadolinium highlighted lesions on T1 images
Exact number (semiautomatic measure)
Measured: 24 months
Normalized cerebral volume (SIENAX) obtained from a T13D sequence
mm^3
Measured: 3 months
Normalized cerebral volume (SIENAX) obtained from a T13D sequence
mm^3
Measured: 12 months
Normalized cerebral volume (SIENAX) obtained from a T13D sequence
mm^3
Measured: 24 months
Change in global cerebral volume (mm^3)
Measured: baseline versus 24 months
EDSS score, including all subscores
Measured: baseline
EDSS score, including all subscores
Measured: 3 months
EDSS score, including all subscores
Measured: 12 months
EDSS score, including all subscores
Measured: 24 months
EDSS score, including all subscores
Measured: after second MS episode (1st relapse)(maximum 24 months)
score for the PASAT 3 seconds section of the MSFC score
Measured: baseline
score for the PASAT 3 seconds section of the MSFC score
Measured: 3 months
score for the PASAT 3 seconds section of the MSFC score
Measured: 12 months
score for the PASAT 3 seconds section of the MSFC score
Measured: 24 months
score for the PASAT 3 seconds section of the MSFC score
Measured: after second MS episode (1st relapse)(maximum 24 months)
EQ5D questionnaire
Measured: baseline
EQ5D questionnaire
Measured: 3 months
EQ5D questionnaire
Measured: 12 months
EQ5D questionnaire
Measured: 24 months
SF36 questionnaire
Measured: baseline
SF36 questionnaire
Measured: 3 months
SF36 questionnaire
Measured: 12 months
SF36 questionnaire
Measured: 24 months
FSMC fatigue scale
Measured: baseline
FSMC fatigue scale
Measured: 3 months
FSMC fatigue scale
Measured: 12 months
FSMC fatigue scale
Measured: 24 months
TLS-QOL10 questionnaire
Measured: baseline
TLS-QOL10 questionnaire
Measured: 3 months
TLS-QOL10 questionnaire
Measured: 12 months
TLS-QOL10 questionnaire
Measured: 24 months
TLS-Coping10 questionnaire
Measured: baseline
TLS-Coping10 questionnaire
Measured: 3 months
TLS-Coping10 questionnaire
Measured: 12 months
TLS-Coping10 questionnaire
Measured: 24 months
HADS questionnaire
Measured: baseline
HADS questionnaire
Measured: 3 months
HADS questionnaire
Measured: 12 months
HADS questionnaire
Measured: 24 months
Presence/absence of adverse events
Presence/absence of adverse events the severity of which will be graded according to Common Terminology Criteria for Adverse Events (CTCAE) version 3. Grades I, II, III, IV, V.
Measured: baseline
Presence/absence of adverse events
Presence/absence of adverse events the severity of which will be graded according to Common Terminology Criteria for Adverse Events (CTCAE) version 3. Grades I, II, III, IV, V.
Measured: 3 months
Presence/absence of adverse events
Presence/absence of adverse events the severity of which will be graded according to Common Terminology Criteria for Adverse Events (CTCAE) version 3. Grades I, II, III, IV, V.
Measured: 6 months
Presence/absence of adverse events
Presence/absence of adverse events the severity of which will be graded according to Common Terminology Criteria for Adverse Events (CTCAE) version 3. Grades I, II, III, IV, V.
Measured: 12 months
Presence/absence of adverse events
Presence/absence of adverse events the severity of which will be graded according to Common Terminology Criteria for Adverse Events (CTCAE) version 3. Grades I, II, III, IV, V.
Measured: 18 months
Presence/absence of adverse events
Presence/absence of adverse events the severity of which will be graded according to Common Terminology Criteria for Adverse Events (CTCAE) version 3. Grades I, II, III, IV, V.
Measured: 24 months
25(OH)D2+D3 serum level (nmol/l)
Measured: baseline
25(OH)D2+D3 serum level (nmol/l)
Measured: 3 months
25(OH)D2+D3 serum level (nmol/l)
Measured: 6 months
25(OH)D2+D3 serum level (nmol/l)
Measured: 12 months
25(OH)D2+D3 serum level (nmol/l)
Measured: 18 months
25(OH)D2+D3 serum level (nmol/l)
Measured: 24 months
25(OH)D2+D3 serum level (nmol/l)
Measured: upon conversion to MS (maximum 24 months)
Calciuria/creatinuria
Measured: baseline
Calciuria/creatinuria
Measured: 3 months
Calciuria/creatinuria
Measured: 6 months
Calciuria/creatinuria
Measured: 12 months
Calciuria/creatinuria
Measured: 18 months
Calciuria/creatinuria
Measured: 24 months
Calciuria/creatinuria
Measured: upon conversion to MS (maximum 24 months)
Delay until conversion to MS
The number of days that pass from the beginning of treatment to conversion to MS according to McDonald 2005 criteria (Polman et al 2005)
Measured: 24 months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted22 Mar 2013 (estimated)
- Study start16 Jul 2013
- Primary completion4 Jan 2023
- Study completion4 Jan 2023
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (1)Papers the sponsor has linked to this study.
- Other trials for Multiple SclerosisStudies of the same condition, open and under way.
- More trials run by Centre Hospitalier Universitaire de NīmesThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 3
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Triple blind
- Who is masked
- Participant, Investigator, Outcomes assessor
- Enrolment
- 316 participants (actual)
Sponsor and investigators
- Lead sponsor
- Centre Hospitalier Universitaire de Nīmes
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
- Investigators
- Eric Thouvennot, MD, PhD, Study director, Centre Hospitalier Universitaire de NīmesEric Thouvenot, MD, PhD, Principal investigator, Centre Hospitalier Universitaire de Nīmes
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01817166
- Sponsor's protocol ID
- PHRC-N/2012/ET-01
- Other IDs
- 2012-005821-59
- Acronym
- D-Lay-MS
- Status last verified
- Jan 2024
- First submitted
- 20 Mar 2013
- Last updated
- 12 Jan 2024
- Results posted
- No
- Data monitoring committee
- Yes
Publications
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.
PubMed 40063041
Study at a glance
From the registry record, last updated by the sponsor on 12 Jan 2024. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- 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.
- ClinicalTrials.gov ID
- NCT01817166
- Acronym / sponsor ID
- D-Lay-MS / PHRC-N/2012/ET-01
- Conditions
- Multiple Sclerosis
- Keywords
- cholecalciferol, vitamin D, immune disease, clinically isolated syndrome
- Phase
- Phase 3
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 316 participants (actual)
- Lead sponsor
- Centre Hospitalier Universitaire de NīmesUniversity, hospital or other
- Study start
- 16 Jul 2013
- Primary completion
- 4 Jan 2023 (actual)
- Study completion
- 4 Jan 2023 (actual)
- First posted
- 22 Mar 2013 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
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).
Detailed description
The secondary objectives of this study are:
- evaluate clinical efficacy: delay to conversion; number of relapses/episodes per year B. evaluate efficacy in terms of resonance imaging parameters (cerebral/spinal MRI) C. evaluate efficacy in terms of slowing the progression of disability as measured by EDSS score and subscores D. measure and assess cognitive abilities (PASAT) E. evaluate changes in quality of life (EQ5D questionnaires, SF36, and TLS-TLS-QoL10 COPING10), fatigue questionnaire (FSMC) and anxiety / depression questionnaire (HADS) F. evaluate treatment tolerance G. to correlate changes in clinical and imaging parameters with the evolution of serum levels of 25(OH)D2 and 25(OH)D3 H. establish a biobank of DNA and RNA from all patients in the study and conduct analyses of gene polymorphisms involved in the metabolism of vitamin D and the HLA system based on the increased levels of vitamin D after supplementation I. establish a biobank of CSF, plasma, blood cells, serum and RNA samples for patients in selected centers for research on prognostic biomarkers of conversion J. establish a biobank consisting of plasma tubes collected for the determination of 25-hydroxy-vitamin D K. Estimate the rate of discordance between the conversion decision made by the study neurologist and the result of the MRI re-interpretation performed at the end of the study as well as the proportion of patients identified a posteriori as as erroneously included according to the centralized reading.
Study design
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Triple blind (participant, investigator, outcomes assessor)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Placebo | Placebo comparator | Drug: Placebo, Other: Imaging, Biological: Lumbar puncture, Biological: Blood sampling, Biological: Urine samplesPatients 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 | Experimental | Drug: Vitamin D, Other: Imaging, Biological: Lumbar puncture, Biological: Blood sampling, Biological: Urine samplesPatients 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 |
Who may qualify
- Ages
- 18 to 56 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult
Key inclusion criteria (12 listed)
- 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
Key exclusion criteria (18 listed)
- 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 in an exclusion period determined by a previous 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
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Vitamin DAlso: CholecalciferolPatients 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. | Drug | Vit D |
| PlaceboPatients 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. | Drug | Placebo |
| ImagingAlso: Cerebro-medullar MRIAll patients are scheduled for MRI scans at baseline, 3 months, 12 months, 24 months, as well as upon conversion to full MS. | Other | Placebo, Vit D |
| Lumbar punctureA baseline collection of cerebral spinal fluid may be required for certain patients (doctor's decision.) | Biological | Placebo, Vit D |
| Blood samplingBlood 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. | Biological | Placebo, Vit D |
| Urine samplesUrine samples are required of all patients at baseline, 3 months, 6 months, 12 months, 18 months, 24 months, and upon conversion to MS. | Biological | Placebo, Vit D |
Primary outcome
Conversion to MS yes/no
Time frame: 24 months
Conversion to MS according to criteria described by McDonald (Polman et al 2005)
75 secondary outcomes
Number of relapse episodes (number per year)
Time frame: 24 months
number of new brain lesions found in FLAIR MRI or medullary lesions found in T2 MRI
Time frame: 3 months
number of new brain lesions found in FLAIR MRI or medullary lesions found in T2 MRI
Time frame: 12 months
number of new brain lesions found in FLAIR MRI or medullary lesions found in T2 MRI
Time frame: 24 months
Number of new T1 lesions taking on Gadolinium highlighting
Time frame: 3 months
Number of new T1 lesions taking on Gadolinium highlighting
Time frame: 12 months
Number of new T1 lesions taking on Gadolinium highlighting
Time frame: 24 months
Number of hyposignal T1 lesions (black holes)
Time frame: 3 months
Number of hyposignal T1 lesions (black holes)
Time frame: 12 months
Number of hyposignal T1 lesions (black holes)
Time frame: 24 months
Lesional burden in mm^3 for each cerebral MRI
Time frame: 3 months
Lesional burden in mm^3 for each cerebral MRI
Time frame: 12 months
Lesional burden in mm^3 for each cerebral MRI
Time frame: 24 months
Total number of Gadolinium highlighted lesions on T1 images
Time frame: 3 months
Total number of Gadolinium highlighted lesions on T1 images
Time frame: 12 months
Total number of Gadolinium highlighted lesions on T1 images
Time frame: 24 months
Normalized cerebral volume (SIENAX) obtained from a T13D sequence
Time frame: 3 months
Normalized cerebral volume (SIENAX) obtained from a T13D sequence
Time frame: 12 months
Normalized cerebral volume (SIENAX) obtained from a T13D sequence
Time frame: 24 months
Change in global cerebral volume (mm^3)
Time frame: baseline versus 24 months
EDSS score, including all subscores
Time frame: baseline
EDSS score, including all subscores
Time frame: 3 months
EDSS score, including all subscores
Time frame: 12 months
EDSS score, including all subscores
Time frame: 24 months
EDSS score, including all subscores
Time frame: after second MS episode (1st relapse)(maximum 24 months)
score for the PASAT 3 seconds section of the MSFC score
Time frame: baseline
score for the PASAT 3 seconds section of the MSFC score
Time frame: 3 months
score for the PASAT 3 seconds section of the MSFC score
Time frame: 12 months
score for the PASAT 3 seconds section of the MSFC score
Time frame: 24 months
score for the PASAT 3 seconds section of the MSFC score
Time frame: after second MS episode (1st relapse)(maximum 24 months)
EQ5D questionnaire
Time frame: baseline
EQ5D questionnaire
Time frame: 3 months
EQ5D questionnaire
Time frame: 12 months
EQ5D questionnaire
Time frame: 24 months
SF36 questionnaire
Time frame: baseline
SF36 questionnaire
Time frame: 3 months
SF36 questionnaire
Time frame: 12 months
SF36 questionnaire
Time frame: 24 months
FSMC fatigue scale
Time frame: baseline
FSMC fatigue scale
Time frame: 3 months
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 12 Jan 2024.
- Derived from this study: PubMed 40063041Thouvenot 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.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Eric Thouvennot, MD, PhD study director
Centre Hospitalier Universitaire de Nīmes
Eric Thouvenot, MD, PhD principal investigator
Centre Hospitalier Universitaire de Nīmes
33 sites in 2 countries: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 3 study testing Vitamin D, Imaging and Lumbar puncture in people with Multiple Sclerosis, run by Centre Hospitalier Universitaire de Nīmes at 33 sites in 2 countries.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 12 inclusion and 18 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 12 Jan 2024. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 33 sites in France, Martinique. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Conversion to MS yes/no (time frame: 24 months). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT01817166, which also lists 1 linked publication.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 12 Jan 2024.