Univariate logistic regression analysis showed that being female, older age, endocapillary hypercellularity, cellular/fibrocellular crescents, higher levels of HDL-C and URBC, and a lower level of ALB, SUA, and Hb were statistically significantly associated with Yang-deficiency (P < 0.05, Table 4). Here, GSTM1 is linked to yang deficiency.