The average CD19+IGF+ lymphocyte count in pregnant women with gestational hypertension (9.68; 95% CI 8.98–10.39) and preeclampsia (12.16; 95% CI 8.34–15.72) was significantly higher than in the control group (1.08; 95% CI 0.94–1.26). The gene discussed is IGF1; the disease is preeclampsia.