SDC1 and preeclampsia: Mid-gestation plasma soluble Sdc1 levels (at median gestational weeks 19.2 vs. 20.1, P = 0.74) were lower in women who later developed early-onset preeclampsia (gestational age at delivery <37 weeks; n = 4) compared to late-onset preeclampsia (gestational age at delivery ≥ 37 weeks; n = 5), but not significantly so [median ng/mL 163 (range 104–207) vs. 195 (158–251); P = 0.38].