Inflammatory bowel disease (IBD), including Crohn's disease (CD) and ulcerative colitis (UC), is a idiopathic, chronic and frequently disabling inflammatory disorder of the intestines characterized by a dysregulated mucosal immune response that affect more than a million Americans. This current protocol was established in 1996 with the goal of identifying the genetic and environmental components that contribute to the development of IBD, especially in families.
The investigators initiated this research study in 1996 with the overall goal of identifying IBD susceptibility genes. In the beginning, the major focus was recruitment of multiply affected IBD pedigrees for linkage studies, but the investigators have since expanded the study to include singleton cases and spousal/friend as well as population controls for comparison purposes The investigator's recruitment goal is 2500 subjects. Blood samples obtained from participants are used to isolate lymphocytes for storage, serum for serological analysis of antibodies and other proteins relevant to IBD and DNA for genotyping or sequencing. Lymphocytes may be transformed with EBV to establish immortalized lymphoblastoid cell lines. These cell lines can be used as a secondary DNA source or to study IBD relevant gene, protein expression and cell function
Study Type
OBSERVATIONAL
Enrollment
2,500
Johns Hopkins University
Baltimore, Maryland, United States
Genetics of IBD
Time frame: Single visit, approximately 1 hour
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