Importantly, receiver operator curves (ROC) underscored the excellent predictive values of serum leukotriene B4 (AUC = 0.99), lipid peroxidation marker MDA (AUC = 0.92), GGT1 (AUC = 0.97), and glutathione (AUC = 0.84) in distinguishing SLE from healthy controls (Fig. 4E–H; redlined). This evidence concerns the gene GGT1 and systemic lupus erythematosus.