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Sarcoid Genetic Analysis (SAGA)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00005542
Recruitment Status : Completed
First Posted : May 26, 2000
Last Update Posted : February 18, 2016
Information provided by:
National Heart, Lung, and Blood Institute (NHLBI)

Brief Summary:
To identify sarcoidosis susceptibility genes and to determine how these genes and environmental risk factors interact to cause sarcoidosis.

Condition or disease
Lung Diseases Sarcoidosis

Detailed Description:


Sarcoidosis is a rare systemic granulomatous disease that mainly affects young to middle aged adults, and more severely affects African Americans than Caucasians. The etiology of sarcoidosis is not yet known, and epidemiological studies have only identified general risk factors including age, sex, race, and family history. Sarcoidosis may also be influenced by environmental factors, although the particular environmental agents have not yet been clearly defined. While previous studies have provided evidence for familial clustering, little is known about the genes that influence predisposition to sarcoidosis.


This is a multicenter consortium genetic epidemiology study. The investigators will accomplish their goal by organizing a 10-site multi-center consortium to recruit an adequate sample of sarcoidosis families for analysis. They plan to use the affected sibling pair linkage analysis to scan the genome for linked chromosomal regions, transmission disequilibrium testing to evaluate candidate genes in those regions with evidence for linkage, and an environmental questionnaire to collect data to test for possible interactions of susceptibility genes with exogenous risk factors. Genotyping and analysis of data are scheduled to begin in July, 2001 with completion of all analysis by April, 2004.

The study consists of a Clinical Core, a Data Coordinating Core, and a Genetics Core with a DNA Processing Center and a Genotyping Center. Eight of the ten clinical centers comprising the Clinical Core are members of the ACCESS, A Case Control Etiology of Sarcoidosis Study.

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

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Study Type : Observational
Study Start Date : May 1999
Actual Study Completion Date : April 2005

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Sarcoidosis

Information from the National Library of Medicine

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Ages Eligible for Study:   up to 100 Years   (Child, Adult, Older Adult)
Sexes Eligible for Study:   Male
Accepts Healthy Volunteers:   No
No eligibility criteria

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 identifier (NCT number): NCT00005542

Sponsors and Collaborators
National Heart, Lung, and Blood Institute (NHLBI)
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OverallOfficial: Michael Iannuzzi Henry Ford Hospital
Layout table for additonal information Identifier: NCT00005542    
Other Study ID Numbers: 5084
U01HL060263 ( U.S. NIH Grant/Contract )
First Posted: May 26, 2000    Key Record Dates
Last Update Posted: February 18, 2016
Last Verified: October 2005
Additional relevant MeSH terms:
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Lung Diseases
Respiratory Tract Diseases
Lymphoproliferative Disorders
Lymphatic Diseases