Genetic Variation and Immune Responses After Injury

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: NCT00294697
Recruitment Status : Unknown
Verified August 2010 by National Institute of General Medical Sciences (NIGMS).
Recruitment status was:  Recruiting
First Posted : February 22, 2006
Last Update Posted : August 24, 2010
Information provided by:
National Institute of General Medical Sciences (NIGMS)

Brief Summary:
Our overall hypothesis is that genetic variations in innate immunity genes predispose patients to varying responses after injury by altering the systemic and local inflammatory responses. In addition, we hypothesize that these genetic differences are associated with different clinical outcomes

Condition or disease
Sepsis Pneumonia Trauma Burn Injury

Detailed Description:
The goal of this research proposal is to identify relationships that exist between specific genetic markers, immune responses to injury and infection (sepsis), and post injury clinical outcomes. Specifically, we will investigate the clinical impact of mutations involved in the innate immune response, which likely influence host response. To accomplish this goal we will collect and analyze data from patients with acute thermal injury, the most quantitative inflammatory stimulus experienced by humans. In addition, we propose to further characterize the immunologic response parameters to injury and infection, and their role in complicated sepsis. In this way, we will identify parameters associated with unfavorable clinical outcomes, and determine how these parameters differ among individuals with different genotypes. We propose to 1) evaluate associations between candidate SNPs within the NOD2/RIP2 signaling pathway and clinical outcome following burn injury, 2) evaluate the functional effects of alternate alleles at candidate SNPs; finally 3), we will use genetically engineered animal models to determine whether mutations in the NOD2 or RIP2 genes alter myocardial signal transduction mechanisms shown to play a role in myocardial inflammation/dysfunction after burn trauma. These approaches should allow us to evaluate more extensively clinically relevant interactions between specific genetic polymorphisms, the cellular expression of immune mediators, and burn-induced immune dysfunction. The proposed research should uncover genetic and/or acute immune-inflammatory parameters that identify patients who are at "high risk" and could as a result make possible the targeted design of pharmacologic intervention strategies that will inhibit the toxic effects of LPS and other bacterial pathogen components without paralyzing the host immunity of patients

Study Type : Observational
Estimated Enrollment : 2000 participants
Observational Model: Cohort
Time Perspective: Prospective
Official Title: Genetics of Innate Immune Response After Burn Trauma
Study Start Date : August 2003
Estimated Study Completion Date : October 2011

Biospecimen Retention:   Samples With DNA
Blood, Tissue, Fluids

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Ages Eligible for Study:   Child, Adult, Older Adult
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes
Sampling Method:   Probability Sample
Study Population
Burn, Trauma, and Surgical Patients

Inclusion Criteria: All burn,trauma, or acute surgery victims admitted to the surgical, burn or trauma units within 24 hours of injury will be considered for inclusion.

Exclusion Criteria:severe immunosuppression, DNR, severe trauma, terminal diseases.

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): NCT00294697

Contact: Fernando A Rivera-Chavez, MD 214-648-3534

United States, Texas
UT Southwestern Medical Center at Dallas Recruiting
Dallas, Texas, United States, 75390-9160
Principal Investigator: Fernando A Rivera, MD         
Sponsors and Collaborators
National Institute of General Medical Sciences (NIGMS)
Principal Investigator: Fernando A Rivera-chavez, MD Univ of Texas Southwestern Medical Center at Dallas