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This research aims to investigate the prevalence and effects of somatic mutations in genes related to aldosterone-producing adenomas.

October 1, 2013HypertensionOpen Access

Somatic ATP1A1 , ATP2B3 , and KCNJ5 Mutations in Aldosterone-Producing Adenomas

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Randomized trial identifies somatic mutations in aldosterone-producing adenomas, suggesting implications for aldosterone dysregulation.

This research aims to investigate the prevalence and effects of somatic mutations in genes related to aldosterone-producing adenomas.
Screened 112 aldosterone-producing adenomas for mutations in genes ATP1A1, ATP2B3, and KCNJ5.
Characterized the effects of novel mutations on CYP11B2 expression in adrenal cells.
Conducted structural modeling and in vitro functional assays for ATPase activity of mutant proteins.
Somatic mutations were detected in 6.3% for ATP1A1, 0.9% for ATP2B3, and 39.3% for KCNJ5 in APAs.
Overexpression of mutations led to increased CYP11B2 gene expression.
Functional assays showed Gly99Arg mutation has impaired ATPase activity and affects ion binding.

Williams et al. (2013) studied this question.

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