Genetic variation in solute carrier genes is associated with preeclampsia

Objective: The objective of the study was to evaluate allelic variation in 26 members of the solute carrier (SLC) gene family for an association with preeclampsia. Study Design: Preeclampsia cases were women with mild or severe preeclampsia. Controls were enrolled from women without hypertension-related complications who presented for delivery at term (<37 weeks). The association between preeclampsia and SLC gene single-nucleotide polymorphisms (SNPs) and haplotypes was evaluated by logistic regression models. Results: Rs4957061 in SLC9A3 was significantly associated with a reduced risk of preeclampsia in whites (T allele, P = .002; odds ratio [OR], 0.33; 95% confidence interval [CI], 0.160.67). For SLC4A1 in blacks, the G allele of rs2074107 (P = .004; OR, 1.56; 95% CI, 1.152.12) and the A allele of rs2857078 (P < .001; OR, 1.67; 95% CI, 1.272.17) were significantly associated with preeclampsia. Also in blacks, rs10066650 in SLCO4C1 (G allele, P = .002; OR, 1.72; 95% CI, 1.212.46) was significantly associated with increased risk. Sliding window haplotype analyses identified significantly associated haplotypes in these genes. Conclusion: SNPs and haplotypes in SLC9A3 in whites and SLC4A1 and SLCO4C1 in blacks are significantly associated with preeclampsia.