CD79A and celiac disease: However, thyroid autoantibodies did not positively correlate with dietary habits.43 Volta et al. showed that there was higher prevalence of celiac disease (IgA TTG and/or IgA EMA, villous atrophy and intraepithelial lymphocytes > 40%) among 220 individuals with autoimmune thyroiditis than in 250 blood donors (3.2% versus 0.4%; P = 0.022).44