Owing to the important role of FCGR2A in controlling humoral reaction to infection [241] and the known importance of the rs1801274 variant in changing the binding volume capacity of the encoded protein product of C-reactive protein (CRP) and immunoglobulin G2 (IgG2) [242–244], these results offer supportive attestation for an interesting interplay between dietary haem consumption and immune physiological function in the etiopathogenesis of UC. Here, CRP is linked to infection.