There was a tendency to increased concentrations of NfL in early onset preeclampsia compared to late onset preeclampsia in gestational week 33 (24.5, IQR 13.4–64.9 vs 9.15, IQR 6.43–26.28 ng/L, p = 0.15) but the numbers were small and the difference was not statistically significant. This evidence concerns the gene NEFL and preeclampsia.