Studies on Abnormal Bone From Patients With Polyostotic Fibrous Dysplasia and McCune Albright Syndrome
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|ClinicalTrials.gov Identifier: NCT00001973|
Recruitment Status : Completed
First Posted : January 19, 2000
Last Update Posted : July 2, 2017
This study will investigate how a gene mutation (change in DNA) causes the abnormal bone in fibrous dysplasia-a condition in which areas of normal bone are replaced with a fibrous growth similar to a scar. The bone abnormalities in fibrous dysplasia can occur in a single bone (monostotic fibrous dysplasia), multiple bones (polyostotic fibrous dysplasia), or in McCune Albright syndrome, in which there are associated glandular abnormalities. This study will also examine calcinosis samples that have been surgically removed from patients with juvenile dermatomyositis.
Patients who are scheduled to have orthopedic surgery for treatment of polyostotic fibrous dysplasia may participate in this study. A small sample of bone tissue removed during surgery will be given to investigators in this study for research tests. DNA will be extracted from the tissue and tested for the mutation. Investigators will attempt to grow cells from the sample in the laboratory to evaluate them for their ability to grow and make proteins that normal bone cells make. These tests are designed to help scientists understand how the mutation leads to abnormal bone formation and provide information that might lead to better treatments for fibrous dysplasia. Patients with juvenile Dermatomyositis who have a calcinosis sample surgically removed are also eligible for participation. The removed tissues will be examined for their composition and microscopic appearance, to better understand the pathogenesis of dystrophic calcification in this disease.
|Condition or disease|
|Polyostotic Fibrous Dysplasia|
|Study Type :||Observational|
|Official Title:||Studies on Tissues From Patients With Fibrous Dysplasia of Bone/McCune-Albright Syndrome and Other Disorders of Calcified Tissues|
|Study Start Date :||December 18, 1996|
|Study Completion Date :||December 12, 2008|
To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00001973
|United States, Maryland|
|National Institutes of Health Clinical Center, 9000 Rockville Pike|
|Bethesda, Maryland, United States, 20892|