Association of CLCNKB haplotypes and hypertension in Mongolian and Han populations

Clinical and Experimental Hypertension : CHE
Xiulan SuHongwei Cui

Abstract

We investigated a possible association between genetic variations in chloride channel Kb (CLCNKB) gene and essential hypertension (EH) in the Mongolian and Han populations in Inner Mongolia. Our study included 414 unrelated Mongolian herdsmen and 524 Han farmers. Two tagSNPs of CLCNKB (rs945393 and rs10803414) were identified from the Chinese HapMap database based on pairwise r(2) ≥ 0.5 and minor allele frequency ≥0.05. Genotyping was performed using the PCR/ligase detection reaction assay. There was significant difference in allele frequency of rs10803414 between the EH group (35%) and the control group (26%) in the Mongolian population (P < .05). Significant association was identified between rs10803414 and EH in the Mongolian population (P < .05) and rs945393 and EH in the Han population (P < .01). The frequency of haplotype CC in the EH group (9.4%) was significantly higher than in the control group (4.6%) in the Mongolian population; individuals who possessed the CC haplotype had a significantly higher risk of EH in the Mongolian population. There was no association between haplotype and EH in the Han population. After adjusting for age, sex, and other confounding risk factors, only rs10803414 was the risk factor of hypert...Continue Reading

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