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Analysis of Met235 to Thr variant of the angiotensinogen gene in relation to the blood pressure and family history of essential hypertension in Japanese children

A recent study reported a significant relationship between a T704→C (Met235→Thr) variant in exon 2 of the angiotensinogen gene in adults and essential hypertension. In the present study, this variant was detected in 131 Japanese children using a polymerase chain reaction. The allele frequency of the variant was 0.76. The genotype frequency of the homozygote for the allele was 0.59, and children who were homozygous had higher systolic blood pressure than those with the other two genotypes. No relationship was found between children's polymorphism and a family history of essential hypertension. These findings suggest that this molecular variant of the angiotensinogen gene may play some role in the regulation of blood pressure in Japanese children.