- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT00006393
Genetic Study of the FBN1 Gene and Fibrillin-1 Abnormalities in Choctaw Native Americans and Other Patients With Systemic Sclerosis
OBJECTIVES: I. Determine whether defects in fibrillin-1 cellular processing are present in the tsk1 mouse model that carries a known FBN1 gene rearrangement and in a population of Choctaw Native American patients with systemic sclerosis who have a strong genetic predisposition to the disease.
II. Determine the ultrastructural features of fibrillin-1 in these patients. III. Screen the FBN1 gene for mutations beginning at the regions homologous to the tsk1 duplication and latent transforming growth factor binding proteins in these patients and in an unaffected Choctaw control group.
IV. Determine the correlation between fibrillin-1 abnormalities and clinical presentation, autoantibodies, and ethnicity.
Study Overview
Status
Conditions
Detailed Description
PROTOCOL OUTLINE:
Patients undergo punch skin biopsy obtained from the upper arm or back. Studies of fibrillin-1 synthesis and cellular processing, and FBN1 mutational analysis, linkage analysis, and genetic mapping are performed on the tissue samples. Patients from all major US ethnic groups (Caucasian, Hispanic, African Americans) will be recruited for the study in the next 2 years.
Study Type
Enrollment
Contacts and Locations
Study Locations
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Texas
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Houston, Texas, United States, 77030
- Recruiting
- University of Texas- Houston Medical School
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Contact:
- Filemon K. Tan
- Phone Number: 713-500-6892
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
PROTOCOL ENTRY CRITERIA:
--Disease Characteristics--
Diagnosis of systemic sclerosis in accordance with the American College of Rheumatology preliminary criteria
Positive for systemic sclerosis antibodies (e.g., anticentromere, antitopo, antifibrillarin, or antiRNA polymerase)
Study Plan
How is the study designed?
Collaborators and Investigators
Collaborators
Investigators
- Study Chair: Filemon Tan, M.D., University of Texas
Study record dates
Study Major Dates
Study Start
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- NCRR-M01RR02558-0104
- UT-H-HSC-MS-96-206
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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