Asprosin (pmanic-control < 0.001, peuthymic-control = 0.046, pmanic-euthymic = 0.015) and PYY (pmanic-control < 0.001, peuthymic-control = 0.037, pmanic-euthymic = 0.002) levels were significantly different between the three groups, with the lowest levels in the BD-M group and the highest levels in the control group. The gene discussed is PYY; the disease is Behcet disease.