Biomarker discovery and development in pediatric critical care medicine.
OBJECTIVE
To frame the general process of biomarker discovery and development; and to describe a proposal for the development of a multibiomarker-based risk model for pediatric septic shock.


METHODS
Narrative literature review and author-generated data.


METHODS
Biomarkers can be grouped into four broad classes, based on the intended function: diagnostic, monitoring, surrogate, and stratification.


METHODS
Biomarker discovery and development requires a rigorous process, which is frequently not well followed in the critical care medicine literature. Very few biomarkers have successfully transitioned from the candidate stage to the true biomarker stage. There is great interest in developing diagnostic and stratification biomarkers for sepsis. Procalcitonin is currently the most promising diagnostic biomarker for sepsis. Recent evidence suggested that interleukin-8 can be used to stratify children with septic shock having a high likelihood of survival with standard care. Currently, there is a multi-institutional effort to develop a multibiomarker-based sepsis risk model intended to predict outcome and illness severity for individual children with septic shock.


CONCLUSIONS
Biomarker discovery and development are an important portion of the pediatric critical care medicine translational research agenda. This effort will require collaboration across multiple institutions and investigators. Rigorous conduct of biomarker-focused research holds the promise of transforming our ability to care for individual patients and our ability to conduct clinical trials in a more effective manner.
Kaplan
Jennifer M
JM
Division of Critical Care Medicine, Cincinnati Children's Hospital Medical Center and Cincinnati Children's Research Foundation, University of Cincinnati College of Medicine, Cincinnati, OH, USA.
Wong
Hector R
HR
D015415:Biomarkers; D016001:Confidence Intervals; D003422:Critical Care; D016638:Critical Illness; D004635:Emergency Medicine; D006801:Humans; D015278:Intensive Care Units, Pediatric; D016013:Likelihood Functions; D011237:Predictive Value of Tests; D012680:Sensitivity and Specificity; D012772:Shock, Septic / Q000175:diagnosis / Q000503:physiopathology
D015415:Biomarkers
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