Clinical Research Directory

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