In the preeclampsia group, the statistically most significant differences were found for the following markers in peripheral blood: increased levels of CD16+, CD56+, HLA-DR+, CD95+, and intracellular production of cytokines—IL-10, TNF, Perforin, GM-CSF, IGF, while reducing CD14+ levels. The gene discussed is NCAM1; the disease is preeclampsia.