Normal-weight children: no significant associations. Overweight: STK39 rs3754777 associated with higher DBP; GRS correlated with higher SBP. Obese: SNP associations between SBP and ATP2B1 rs17249754, CSK rs1378942, CYP17A1 rs1004467; HTN associated with ATP2B1 rs17249754, CSK rs1378942, CYP17A1 rs1004467, MTHFR rs1801133 (OR = 1.22, P = 0.03). This evidence concerns the gene MTHFR and hypertensive disorder.