A Genomic Score Prognostic of Outcome in Trauma Patients

被引:66
作者
Warren, H. Shaw [1 ]
Elson, Constance M. [2 ]
Hayden, Douglas L. [2 ]
Schoenfeld, David A. [2 ]
Cobb, J. Perren [3 ]
Maier, Ronald V. [4 ]
Moldawer, Lyle L. [5 ]
Moore, Ernest E. [6 ]
Harbrecht, Brian G. [7 ]
Pelak, Kimberly [2 ]
Cuschieri, Joseph [4 ]
Herndon, David N. [9 ]
Jeschke, Marc G. [9 ]
Finnerty, Celeste C. [9 ]
Brownstein, Bernard H. [3 ]
Hennessy, Laura [4 ]
Mason, Philip H. [8 ]
Tompkins, Ronald G. [8 ]
机构
[1] Massachusetts Gen Hosp, Infect Dis Unit, Charlestown, MA USA
[2] Massachusetts Gen Hosp, Ctr Biostat, Boston, MA 02114 USA
[3] Washington Univ, Dept Surg, St Louis, MO USA
[4] Univ Washington, Harborview Med Ctr, Dept Surg, Seattle, WA 98104 USA
[5] Univ Florida, Coll Med, Dept Surg, Gainesville, FL USA
[6] Univ Colorado, Dept Surg, Denver Hlth Med Ctr, Denver, CO 80202 USA
[7] Univ Louisville, Dept Surg, Louisville, KY 40292 USA
[8] Massachusetts Gen Hosp, Dept Surg, Boston, MA 02114 USA
[9] Univ Texas Med Branch, Shriners Burn Hosp, Dept Surg, Galveston, TX USA
关键词
MULTIPLE ORGAN FAILURE; INJURY SEVERITY SCORE; APACHE-II; VARIABILITY; PREDICTORS; DISEASE; SYSTEM; CARE;
D O I
10.2119/molmed.2009.00027
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Traumatic injuries frequently lead to infection, organ failure, and death. Health care providers rely on several injury scoring systems to quantify the extent of injury and to help predict clinical outcome. Physiological, anatomical, and clinical laboratory analytic scoring systems (Acute Physiology and Chronic Health Evaluation (APACHE), Injury Severity Score (ISS)) are utilized, with limited success, to predict outcome following injury. The recent development of techniques for measuring the expression level of all of a person's genes simultaneously may make it possible to develop an injury scoring system based on the degree of gene activation. We hypothesized that a peripheral blood leukocyte gene expression score could predict outcome, including multiple organ failure, following severe blunt trauma. To test such a scoring system, we measured gene expression of peripheral blood leukocytes from patients within 12 h of traumatic injury. cRNA derived from whole blood leukocytes obtained within 12 h of injury provided gene expression data for the entire genome that were used to create a composite gene expression score for each patient. Total blood leukocytes were chosen because they are active during inflammation, which is reflective of poor outcome. The gene expression score combines the activation levels of all the genes into a single number which compares the patient's gene expression to the average gene expression in uninjured volunteers. Expression profiles from healthy volunteers were averaged to create a reference gene expression profile which was used to compute a difference from reference (DFR) score for each patient. This score described the overall genomic response of patients within the first 12 h following severe blunt trauma. Regression models were used to compare the association of the DFR, APACHE, and ISS scores with outcome. We hypothesized that patients with a total gene response more different from uninjured volunteers would tend to have poorer outcome than those more similar. Our data show that for measures of poor outcome, such as infections, organ failures, and length of hospital stay, this is correct. DFR scores were associated significantly with adverse outcome, including multiple organ failure, duration of ventilation, length of hospital stay, and infection rate. The association remained significant after adjustment for injury severity as measured by APACHE or ISS. A single score representing changes in gene expression in peripheral blood leukocytes within hours of severe blunt injury is associated with adverse clinical outcomes that develop later in the hospital course. Assessment of genome-wide gene expression provides useful clinical information that is different from that provided by currently utilized anatomic or physiologic scores. (C) 2009 The Feinstein Institute for Medical Research, www.feinsteininstitute.org Online address: http://www.molmed.org doi: 10.2119/molmed.2009.00027
引用
收藏
页码:220 / 227
页数:8
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