In the sera of patients who were gliadin 33-mer peptide- and tTG-positive (celiac disease), based on cutoff values respectively of 1.010, 0.8695, and 0.6895, the percentages were 20% (AUC 0.67, p < 0.0001) for aluminum hydroxide, 56% (AUC 0.83, p < 0.0001) for aluminum citrate, and 81% (AUC 0.92, p < 0.0001) for aluminum potassium sulfate (Figure 2A–C). This evidence concerns the gene TGM2 and celiac disease.