Correlations were found in LPS responses as follows: number of antiseizure medications and IL-1ra (p = 0.01) and TNF-α (p = 0.04); number of infections within the last year and IL-18 (p = 0.02); requirement for enteral feeding and IL-10 (p = 0.03) and EPO (p = 0.001); use of prophylactic antibiotics and IL-10 (p = 0.001); requirement for respiratory support and VEGF (p = 0.007). This evidence concerns the gene IL18 and infection.