GPT and systemic lupus erythematosus: As listed in Table 1, no significant differences were observed in age, body mass index (BMI), aspartate aminotransferase (AST), alanine transaminase (ALT), blood urea nitrogen (BUN), serum creatinine (Cr), and lipids level between SLE patients and, while the level of serum 1,25-(OH)2D3 in the SLE group was apparently lower than that of the control group (p < 0.05).