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Vitamin D Metabolism and the Williams Syndrome

This study has been completed.
Sponsor:
Information provided by:
National Center for Research Resources (NCRR)
ClinicalTrials.gov Identifier:
NCT00013962
First received: April 3, 2001
Last updated: June 23, 2005
Last verified: December 2003
History of Changes
  Purpose

The Williams syndrome is a disease in which supravalvular aortic stenosis, an elfin facies, mental retardation and other congenital defects are sometimes associated with abnormal vitamin D and calcium metabolism. Whereas some patients have been reported to show increased sensitivity to vitamin D or an exaggerated response of serum 25-hydroxyvitamin D {25(OH)D} to administration of vitamin D and to have hypercalcemia caused by increased circulating 1,25-dihydroxyvitamin D{1,25(OH)2D} in infancy and early childhood, most patients have normal calcium metabolism and normal values for circulating 25(OH)D and 1,25(OH)2D. We propose to carry out further studies of vitamin D metabolism to elucidate the mechanism(s) for abnormal vitamin D metabolism. We will determine the response of serum 1,25(OH)2D to administration of 1,25(OH)2D3. Measurement of the 1,25(OH)2D in the patients compared to normal subjects will be the primary outcome.


Condition Intervention
Williams Syndrome
 Drug: Vitamin D

Study Type: Observational
Study Design: Observational Model: Case Control
Observational Model: Natural History
Official Title: Vitamin D Metabolism and the Williams Syndrome

Resource links provided by NLM:

MedlinePlus related topics: Vitamin D
Drug Information available for: Vitamin D
U.S. FDA Resources

Further study details as provided by National Center for Research Resources (NCRR):

  Eligibility

Ages Eligible for Study:   18 Years to 50 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   Yes
Criteria

Age 18 years to 50 years of age, patients and normal subjects

  Contacts and Locations
Please refer to this study by its ClinicalTrials.gov identifier: NCT00013962

Locations
United States, South Carolina
Medical University of South Carolina
Charleston, South Carolina, United States, 29425
Sponsors and Collaborators
National Center for Research Resources (NCRR)
  More Information

No publications provided

ClinicalTrials.gov Identifier: NCT00013962     History of Changes
Other Study ID Numbers: NCRR-M01RR01070-0562
Study First Received: April 3, 2001
Last Updated: June 23, 2005
Health Authority: United States: Federal Government

Additional relevant MeSH terms:
Williams Syndrome
Mental Retardation
Neurobehavioral Manifestations
Neurologic Manifestations
Nervous System Diseases
Aortic Stenosis, Supravalvular
Aortic Valve Stenosis
Heart Valve Diseases
Heart Diseases
Cardiovascular Diseases
Chromosome Disorders
 Congenital Abnormalities
Genetic Diseases, Inborn
Vitamin D
Ergocalciferols
Vitamins
Bone Density Conservation Agents
Physiological Effects of Drugs
Pharmacologic Actions
Micronutrients
Growth Substances

ClinicalTrials.gov processed this record on May 19, 2013