The present preliminary results show that mHLA-DR is an independent predictor of mortality in septic shock patients. Being a marker of immune failure, low mHLA-DR may provide a rationale for initiating therapy to reverse immunosuppression. After validation of the current results in multicenter studies, mHLA-DR may help to stratify patients when designing a mediator-directed therapy in a time-dependent manner.

These data support the concept that the persistence of a pronounced immunoparalysis after septic shock is associated with a poor outcome. Whether CD4+CD25+ T cells directly participate in sepsis-induced immunoparalysis remains to be investigated.

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