HLA-E and Behcet disease: Similar distribution of sHLA-E levels according to HLA-E genotypes (AA = 265.65, AG = 298, GG = 364.58, overall p = 0.0147) was observed in patients with SZ (Fig. 4B), although not in the BD patient sub-group (Fig. 4C) (AA = 202.1, AG = 259.9, GG = 277.1, Overall p = 0.1356).