Influence of the Vitamin D Blood Levels on the Amyotrophic Lateral Sclerosis Phenotype

This study is ongoing, but not recruiting participants.
Information provided by (Responsible Party):
University Hospital, Montpellier Identifier:
First received: March 22, 2013
Last updated: January 8, 2015
Last verified: March 2013

Amyotrophic lateral sclerosis is one of the most serious neurodegenerative disease, leading to death in 3 years by progressive paralysis of 4 limbs, speech, swallowing and breathing, and due to a progressive death of central and peripheral neurons. The cause of the disease is unknown, but an immunologically factor is more precisely suspected in ALS. Since 2008, the work of Immunology have shown that vitamin D was a major regulator of immunity. It regulates particularly the function of dendritic cells and regulates the immune response in macrophages. A vitamin D deficiency will induce activation of microglia. In neurology, vitamin D deficiency is associated with a greater impairment in neuronal function. This deficit is associated with a faster alteration of the microvasculature, alteration known to increase neuronal suffering and to enhance the neurodegenerative processes. The investigators postulate that ALS patients have a more severe prognosis if their vitamin D levels at the time of diagnosis is lower. The main objective of this study is to investigate the correlation between the rate of motor decline and blood levels of Vitamin D total. Secondary objectives are to investigate the relationship between blood levels of vitamin D and total disease duration of ALS, forced vital capacity, weight loss, age of onset and the start site of ALS.

Condition Intervention
Amyotrophic Lateral Sclerosis
Procedure: Blood test

Study Type: Interventional
Study Design: Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Basic Science
Official Title: Influence of the Vitamin D Blood Levels on the Amyotrophic Lateral Sclerosis Phenotype

Resource links provided by NLM:

Further study details as provided by University Hospital, Montpellier:

Primary Outcome Measures:
  • Vitamin D blood level [ Time Frame: the day of inclusion ] [ Designated as safety issue: No ]
    The vitamine D blood level will be assessed the day of the inclusion of the patient.

Estimated Enrollment: 125
Study Start Date: September 2012
Estimated Study Completion Date: September 2015
Estimated Primary Completion Date: May 2015 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Amyotrophic lateral sclerosis
Blood test
Procedure: Blood test
Blood test


Ages Eligible for Study:   18 Years to 95 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Subject with possible, probable or definite Amyotrophic Lateral Sclerosis (ALS).
  • ALS operating for less than three years at dosage of vitamin D time.
  • Subject monitored in the center ALS of Montpellier for 6 months.
  • Subject agreeing to give his consent in writing or orally if the patient SLA is unable to write

Exclusion Criteria:

  • Subject has received a Vitamine D treatment in the six months preceding the inclusion
  • Subject with a clinical condition on the inclusion day that makes it highly probable death in the year (quadriplegic patient, subject ventilated for respiratory failure in ALS, major malnutrition) or with ALSFRS-R score <20.
  • Pregnant or breastfeeding women
  • Subject not covered by a social security scheme.
  • Subject under guardianship
  • Adult protected by the law
  Contacts and Locations
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Please refer to this study by its identifier: NCT01823380

UH Montpellier
Montpellier, France, 34295
Sponsors and Collaborators
University Hospital, Montpellier
Principal Investigator: William Camu, PU PH UH Montpellier
  More Information

No publications provided

Responsible Party: University Hospital, Montpellier Identifier: NCT01823380     History of Changes
Other Study ID Numbers: 8987
Study First Received: March 22, 2013
Last Updated: January 8, 2015
Health Authority: France: Agence Nationale de Sécurité du Médicament et des produits de santé

Keywords provided by University Hospital, Montpellier:
Amyotrophic lateral sclerosis
Vitamin D
Blood Levels

Additional relevant MeSH terms:
Amyotrophic Lateral Sclerosis
Motor Neuron Disease
Central Nervous System Diseases
Metabolic Diseases
Nervous System Diseases
Neurodegenerative Diseases
Neuromuscular Diseases
Pathologic Processes
Proteostasis Deficiencies
Spinal Cord Diseases
TDP-43 Proteinopathies
Vitamin D
Bone Density Conservation Agents
Growth Substances
Pharmacologic Actions
Physiological Effects of Drugs
Vitamins processed this record on July 01, 2015