FCGR1A and Sepsis: A similar result was obtained for the identification, with neutrophil CD64, of sepsis based on sepsis-2 criteria in critically ill patients, with a sensitivity, specificity, and area under the SROC curve of 0.76 (95% confidence interval [CI] 0.73–0.78), 0.85 (95% CI 0.82–0.87), and 0.95, respectively [11].