While there is a significant overlap between IgG and IgA antibodies in both patients' groups, the percentage of IgA-reactive specimens against various tested antigens was the most significant in the gluten-sensitive group, followed by IgG presence in both the gluten-sensitive and Crohn's disease groups, with IgA reactivity against these antigens being the least significant in patients with Crohn's disease (Table 1). The gene discussed is CD79A; the disease is Crohn disease.