Also, there were no significant differences in the levels of tTG-IgA (p = 0.96), tTG-IgG (p = 0.29), AGA-IgA (p = 0.81) AGA-IgG (p = 0.53) between the psoriasis patients using MTX and psoriasis patients who did not use MTX. This evidence concerns the gene CD79A and psoriasis.