Study of Heritable Connective Tissue Disorders
|First Submitted Date||November 3, 1999|
|First Posted Date||November 4, 1999|
|Last Update Posted Date||March 4, 2008|
|Start Date||March 1997|
|Primary Completion Date||Not Provided|
|Current Primary Outcome Measures||Not Provided|
|Original Primary Outcome Measures||Not Provided|
|Change History||Complete list of historical versions of study NCT00001641 on ClinicalTrials.gov Archive Site|
|Current Secondary Outcome Measures||Not Provided|
|Original Secondary Outcome Measures||Not Provided|
|Current Other Outcome Measures||Not Provided|
|Original Other Outcome Measures||Not Provided|
|Brief Title||Study of Heritable Connective Tissue Disorders|
|Official Title||Clinical and Molecular Manifestations of Heritable Connective Tissue Disorders|
The purposes of this study are to identify the genes responsible for inherited connective tissue disorders and learn about the range of medical problems they cause. It will investigate whether specific gene changes cause specific medical problems and will establish diagnostic criteria (signs and symptoms) for the individual syndromes.
Children and adults with a known or suspected inherited connective tissue disorder (Marfan, Ehlers-Danlos or Stickler syndrome, or other closely related disorders) and their family members may be eligible for this study.
Patients enrolled in the study will have a medical history, physical examination and blood tests, as well as other procedures that may include:
(Patients who wish to enroll but cannot travel to NIH may have a more limited participation, including review of medical records, telephone interview regarding personal and family history, and collection of a specimen (blood, skin biopsy, or other) for genetic testing.
Patients will be notified of genetic testing results that show a change responsible for their connective tissue disorder. If they wish, the information will also be sent to their local health care provider, along with recommendations for additional tests or treatment options. No treatment is offered as part of this study.
Participating family members who do not themselves have a connective tissue disorder will provide a small blood sample for gene testing and be interviewed by telephone about their personal and family health history. Those whose blood test results show a gene change associated with a connective tissue disorder will be invited to NIH for a discussion of the findings or referred to a genetic center in their area.
|Detailed Description||We will investigate the clinical manifestations and molecular genetic defects of heritable connective tissue disorders, concentrating on the Marfan, Stickler, and Ehlers-Danlos syndromes. Although each of these conditions has been known for many years, the full spectrum of the associated phenotypes continues to be expanded and the genetic etiology of these conditions has not been completely elucidated. In addition, many patients have features overlapping two or more of the described syndromes, precluding unequivocal diagnosis. The goals of this study are to further define and characterize the full phenotype and natural history of these disorders, and to perform genetic linkage, gene identification, mutation detection, and genotype/phenotype correlations in affected individuals and families. Individuals suspected to have Marfan, Stickler or Ehlers-Danlos syndrome or a closely related disorder, as well as interested family members, will be enrolled. Participants will undergo genetic analyses and periodic clinical assessment. The expected outcomes will be improved clinical descriptions of the conditions and gene and mutation identification with analysis of genotype/phenotype correlations.|
|Study Design||Not Provided|
|Target Follow-Up Duration||Not Provided|
|Sampling Method||Not Provided|
|Study Population||Not Provided|
|Study Groups/Cohorts||Not Provided|
* Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
|Estimated Completion Date||June 2002|
|Primary Completion Date||Not Provided|
Individuals and their family members will be offered enrollment if they have a suspected or established diagnosis of Marfan, Stickler, Ehlers-Danlos, or a closely related syndrome.
Personal or family history of one or more of the following features in a pattern suggestive of a heritable connective tissue disorder:
Marfanoid body habitus;
Aortic dilatation and/or dissection;
Ectopia lentis, detached retina, vitreous degeneration and/or early onset high myopia;
Posterior cleft palate; joint laxity and/or dislocation;
Skin fragility, striae, easy bruisability and/or hyperextensibility;
Pectus excavatum or carinatum;
Scoliosis, spondylolisthesis, and/or dural ectasia;
High frequency sensorineural hearing loss.
Inability to provide informed consent.
|Ages||Child, Adult, Senior|
|Accepts Healthy Volunteers||Yes|
|Contacts||Contact information is only displayed when the study is recruiting subjects|
|Listed Location Countries||United States|
|Removed Location Countries|
|Other Study ID Numbers||970089
|Has Data Monitoring Committee||Not Provided|
|U.S. FDA-regulated Product||Not Provided|
|IPD Sharing Statement||Not Provided|
|Responsible Party||Not Provided|
|Study Sponsor||National Human Genome Research Institute (NHGRI)|
|PRS Account||National Institutes of Health Clinical Center (CC)|
|Verification Date||June 2002|