Protein expressions were also significantly reduced in preeclamptic placentas as follows: ABCA1 in Chugusa et al. and LXRB in Weedon-Fekjaer et al. However, in both studies, gestational age at delivery was earlier in the preeclampsia group than in the normal pregnancy group, which could have influenced the results. This evidence concerns the gene ABCA1 and preeclampsia.