FOXP3 and systemic lupus erythematosus: The results showed that the statistical power in our study were: (1) the associations between both Foxp3 (IVS9+459/rs2280883 (T>C) and −2383/rs3761549 (C>T)) gene polymorphisms and SLE risk, and (2) the 81% accuracy of the three SVM models and the logistic regression model when performing classifications based on gene expression data in biological challenges about genetic factors predisposing to SLE.