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Genetic Epidemiology of Sarcoidosis

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ClinicalTrials.gov Identifier: NCT00005531
Recruitment Status : Completed
First Posted : May 26, 2000
Last Update Posted : February 18, 2016
Sponsor:
Information provided by:

Study Description
Brief Summary:
To determine if hereditary susceptibility predisposes African Americans to sarcoidosis and to identify sarcoidosis susceptibility genes in African Americans.

Condition or disease
Lung Diseases Sarcoidosis

Detailed Description:

BACKGROUND:

Sarcoidosis is a multisystem, granulomatous inflammatory disease of unknown etiology. Hereditary susceptibility to sarcoidosis is suggested by reports of familial clustering and a higher prevalence in certain ethnic groups, particularly African-Americans. Over four hundred kindreds been reported in the medical literature and these investigators have recently described 101 families and shown that African Americans have a higher prevalence rate of familial sarcoidosis than Caucasians (19 percent vs. 5 percent). The reasons why sarcoidosis clusters in families or the role of genetic factors in this disease are not known.

DESIGN NARRATIVE:

The study was carried out in African American families ascertained through 400 African American sarcoidosis patients evaluated at the Henry Ford Health System. They were tested for association of sarcoidosis with markers for candidate genes using the affected family-based control method and tested for possible environmental risk factors and genetic mechanisms of disease transmission by performing a segregation analysis in African American families.

A strong association of one or more of the candidate genes with sarcoidosis or an indication of major gene segregation for the disease, provided the basis for future linkage studies. Investigating the hereditary susceptibility of sarcoidosis was best done in African Americans, because of the greater severity and occurrence of disease in this population. Once the reasons for familial aggregation of sarcoidosis are determined, the etiology of this disease will be better understood and it should be possible to design new approaches to prevention and treatment.

The study completion date listed in this record was obtained from the "End Date" entered in the Protocol Registration and Results System (PRS) recor


Study Design

Study Type : Observational
Study Start Date : December 1996
Study Completion Date : November 2000

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Sarcoidosis
U.S. FDA Resources

Groups and Cohorts


Outcome Measures

Eligibility Criteria

Information from the National Library of Medicine

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Ages Eligible for Study:   up to 100 Years   (Child, Adult, Senior)
Sexes Eligible for Study:   Male
Accepts Healthy Volunteers:   No
Criteria
No eligibility criteria
Contacts and Locations

Information from the National Library of Medicine

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): NCT00005531


Sponsors and Collaborators
National Heart, Lung, and Blood Institute (NHLBI)
Investigators
OverallOfficial: Michael Iannuzzi Case Western Reserve University
More Information

Publications:

ClinicalTrials.gov Identifier: NCT00005531     History of Changes
Other Study ID Numbers: 5064
R01HL054306 ( U.S. NIH Grant/Contract )
First Posted: May 26, 2000    Key Record Dates
Last Update Posted: February 18, 2016
Last Verified: August 2004

Additional relevant MeSH terms:
Lung Diseases
Sarcoidosis
Respiratory Tract Diseases
Lymphoproliferative Disorders
Lymphatic Diseases