However, the concentrations of 3CK in this study (30 ng/mL TNF-α, 30 ng/mL IFN-γ, and 10 ng/mL IL-1β) are much higher than those in the blood of IBD patients (3,000 pg/mL TNF-α, 900 pg/mL IFN-γ, and 200 pg/mL IL-1β).3 This evidence concerns the gene IFNG and inflammatory bowel disease.