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(Hypertension. 2004;43:766.)
© 2004 American Heart Association, Inc.

Scientific Contributions

WNK4 Intron 10 Polymorphism Is Not Associated With Hypertension

From the Basic & Clinical Genomics Laboratory, School of Medical Sciences and Institute of Biomedical Research, University of Sydney, Australia.

Correspondence to Brian J. Morris, Basic & Clinical Genomics Laboratory, School of Medical Sciences and Institute of Biomedical Research, Building F13, University of Sydney, NSW 2006, Australia. E-mail brianm{at}physiol.usyd.edu.au

A polymorphism in intron 10 of the serine-threonine kinase with no lysine (K) 4 gene WNK4 (GA, base 1156666 on chromosome 17) has recently been associated with essential hypertension in a white American population. We have attempted to replicate this finding in a well characterized cohort of 184 unrelated hypertensive Australians of British extraction in which biological power was enhanced by them each having 2 hypertensive parents. Controls were 219 normotensive ethnically matched subjects whose parents were both normotensive. Genotyping was performed using the homogeneous MassEXTEND Assay. This showed a frequency of 0.10 for the minor allele in each group (P=0.88). Moreover, blood pressure, body mass index, sex, and plasma lipid levels were similar across genotypes. In conclusion, our study provides no support for an association of the intron 10 variant of WNK4 with essential hypertension in the Anglo-Australian population studied.

Key Words: kinase • hypertension, essential • genetics • polymorphism • sodium transport

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