Xu et al. (2019) [27] evaluated biomarkers in 3118 febrile episodes among pediatric cancer patients and demonstrated CRP’s poor discriminative power for Gram-negative bacteremia (AUC = 0.56), significantly lower than IL-6 (AUC = 0.77) and IL-10 (AUC = 0.81). This evidence concerns the gene IL10 and cancer.