Inflammatory markers that have been reported to aid in diagnosis of IBD include calprotectin, cytokines such as IL-6, IFN-γ, and MIP-1β, salivary amylase, mucin 5B, salivary IgA, cortisol, C reactive protein (CRP), and stool lactoferrin [24, 25]. Here, IFNG is linked to inflammatory bowel disease.