Abstract: The invention relates to the use of a certain subset of cytokine markers as prognostic variables of infection status in an individual, and especially as prognostic markers of a patients developing severe infection such as pneumonia, and respiratory tract infection following surgery. The subset of cytokine markers consists of the interleukin cytokines IL-2, IL-7, IL-23, IL-27, and IL-10, and Interferon-? (INF?) and Tissue Necrosis Factor-? (TNF?). The markers may be employed as individual prognostic variables of infection status, or they may be used in pairs or other combinations. Generally, the abundance of the markers is correlated with infection status by means of an absolute pre-operative value of biomarker abundance, ratio's of pre-operative to post-operative biomarker abundance, or ratio values for pairs of certain biomarkers within the subset.

Abstract: A method of estimating sepsis risk in an individual with infection comprises a step of assaying a biological sample from the individual for an IL-2 or IL-7 mRNA value, and correlating the mRNA value with sepsis risk. The IL-2 and IL-7 mRNA values are quantified by absolute quantification of mRNA copy number, wherein the copy numbers are normalised to a house keeping gene and corrected against a calibration curve for serial dilutions of the IL-2 and IL-7 cDNA. The method generally involves a step of assaying a biological sample from the individual for IL-2 and/or IL-7 mRNA values, optionally in combination with mRNA values for other cytokines, and correlating a sum or difference of the values with sepsis risk.

Abstract: A method of estimating sepsis risk in an individual with infection comprises a step of assaying a biological sample from the individual for an IL-2 or IL-7 mRNA value, and correlating the mRNA value with sepsis risk. The IL-2 and IL-7 mRNA values are quantified by absolute quantification of mRNA copy number, wherein the copy numbers are normalised to a house keeping gene and corrected against a calibration curve for serial dilutions of the IL-2 and IL-7 cDNA. The method generally involves a step of assaying a biological sample from the individual for IL-2 and/or IL-7 mRNA values, optionally in combination with mRNA values for other cytokines, and correlating a sum or difference of the values with sepsis risk using a regression analysis curve against outcome.

Abstract: The invention relates to the use of a certain subset of cytokine markers as prognostic variables of infection status in an individual, and especially as prognostic markers of a patients developing severe infection such as pneumonia, and respiratory tract infection following surgery. The subset of cytokine markers consists of the interleukin cytokines IL-2, IL-7, IL-23, IL-27, and IL-IO, and Interferon-? (INF?) and Tissue Necrosis Factor-? (TNF?). The markers may be employed as individual prognostic variables of infection status, or they may be used in pairs or other combinations. Generally, the abundance of the markers is correlated with infection status by means of an absolute pre-operative value of biomarker abundance, ratio's of pre-operative to post-operative biomarker abundance, or ratio values for pairs of certain biomarkers within the subset.

Abstract: The present invention relates to a method for identifying patients who are likely to develop sepsis in response to infection, a method for monitoring the progress of sepsis in a patient and to an assay kit for identifying patients who are likely to develop sepsis and/or monitoring the progress of sepsis.