The distributions of allelic and genotype frequencies of SNPs rs9934438 and rs9923231 in the VKORC1 gene, rs5918 in the ITGB3 gene, and rs2070959 in the UGT1A6 gene showed significant differences between HF patient groups with and without complications (see Supplementary Table S2). The gene discussed is VKORC1; the disease is hydrops fetalis.