Key result
Primary aldosteronism tumors exhibit distinct CYP11B2 expression and driver mutation heterogeneity in 14% of cases.
Why the study?
Significant gaps remain in understanding the relationship between tumor CYP11B2 expression and somatic mutation status in primary aldosteronism.
Population
51 adrenals from 51 PA patients
Comparison
CYP11B2-positive vs CYP11B2-negative tumor regions and adjacent normal areas
Design
Observational study with immunohistochemistry and targeted next-generation sequencing
Authors
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May complicate single-sample adenoma genotyping; hypothesis-generating for multistep tumorigenesis in primary aldosteronism.
Observational (n=51)
Aldosterone-producing adenomas can exhibit intratumor heterogeneity in CYP11B2 expression and somatic mutations, suggesting tumorigenesis may occur within preexisting nodules.
Nanba et al. (2016) conducted an observational in Primary aldosteronism (n=51). Intratumor CYP11B2 heterogeneity was evaluated on Distinct heterogeneity in CYP11B2 by immunohistochemistry. Among 51 adrenals from patients with primary aldosteronism, 14% showed distinct intratumor heterogeneity in CYP11B2 expression and somatic mutations in aldosterone-driver genes.
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