In the present work the renin-angiotensin system gene polymorphisms REN (I9–83G > A), AGT (M235T), AGTR1 (1166A > C), AGTR2 (3123C > A), BKR2 (–58T > C) in pregnant women with preeclampsia, women with physiological pregnancy, healthy donors have been studied using allele-specific hybridization on the biochip. There were no statistically significant differences in genotypes distribution and allele frequencies of any genes between pre-eclampsia patients and women with normal pregnancy or donors (p > 0.05). However, it was shown that C/C genotype for the AGTR2 gene is a risk factor for preeclampsia in women with chronic pyelonephritis. In addition, accuracy of predicting the risk of pre-eclampsia based on the pyelonephritis availability and genotypes for genes AGTR1, AGTR2, BKR2 was 69 % using a logistic regression method