Unlike in the control group, the HSP90 and arginase levels increased significantly (p < 0.05) in the BD group, but the levels of carbonic anhydrase, GAPDH, catalase, fibrinogen, GSTP, carboxylesterase and haeme-binding protein in the BD group decreased significantly (p < 0.05). The gene discussed is GSTP1; the disease is Behcet disease.