Interestingly, the next two papers on the podium considered the role of salivary IgA in the dysbiosis of the intestinal microbiota in inflammatory bowel diseases (Said et al., 2014 [22]; n = 272) and in the formation of systemic immune responses from the gastrointestinal tract (Sjögren et al., 2009 [23]; n = 245). This evidence concerns the gene CD79A and inflammatory bowel disease.