This study was the first to identify a BMI-specific association of GWAS-significant hypertension/BP susceptibility genes with PE: rs805303 of BAG6 (protective allele: A, OR: 0.36–0.66) and rs167479 of RGL3 (risk allele: G, OR: 1.86) were associated with PE in preBMI ≥ 25 pregnant women and not associated with disorder in the preBMI < 25 group. Here, BAG6 is linked to hypertensive disorder.