GSTM1 and preeclampsia: In this study, no significant difference was found in the RBC count, Hb, and 24-h urinary protein level between the group with RPLS and the group without RPLS, indicating that RBC, Hb, and 24-h urinary protein were predictors and evaluation indexes of severe preeclampsia or eclampsia, but whether to predict the combination of RPLS needs to be further studied.