Specifically, the median (interquartile range [IQR]) serum AAT protein concentration was 1.07 (0.39–3.54) mg/mL in BD, 0.63 (0.3–2.1) in EP and 3.15 (1.59–5.9) in LP (Figure 2, panel D). Here, SERPINA1 is linked to Behcet disease.