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Updated: May 23, 2026
06:08
A Novel Method: Super-selective Adrenal Venous Sampling
Published on: September 15, 2017
Single nucleotide polymorphism microarray analysis in cortisol-secreting adrenocortical adenomas identifies new
Cristina L Ronchi1, Ellen Leich, Silviu Sbiera
1Unit of Endocrinology, Department of Internal Medicine I, University Hospital of Würzburg, Würzburg, Germany. cry_ronchi@yahoo.it
Neoplasia (New York, N.Y.)
|April 13, 2012
Summary
This study reveals novel genetic alterations in cortisol-secreting adrenocortical tumors, identifying potential new genes like HRAS and EPHA7 involved in tumor development and cortisol secretion. The findings highlight the Notch signaling pathway
Area of Science:
- Endocrinology
- Genetics
- Oncology
Background:
- Adrenocortical tumor development mechanisms remain largely unknown.
- Cortisol-secreting adenomas are a significant clinical concern.
Purpose of the Study:
- To investigate microalterations in cortisol-secreting adrenocortical adenomas.
- To discover novel candidate genes implicated in early tumorigenesis and autonomous cortisol secretion.
Main Methods:
- Utilized high-resolution single nucleotide polymorphism microarrays (Affymetrix SNP 6.0).
- Analyzed copy number alterations (CNAs) and copy-neutral losses of heterozygosity (cnLOH) in 15 adenomas with matched blood samples.
Main Results:
- Identified 962 CNAs, with frequent gains in regions containing genes like NOTCH1, CYP11B2, HRAS, and IGF2.
- Discovered 46 recurrent CNAs affecting single genes, including CYP11B1, CTNNB1, EPHA7, and SGK1.
- Notch signaling pathway identified as frequently altered; 20 small cnLOH affecting 15 genes were found.
Conclusions:
- Provides the first high-resolution genome-wide view of chromosomal changes in cortisol-secreting adenomas.
- Identifies novel candidate genes (HRAS, EPHA7, SGK1) for adrenocortical tumor pathogenesis.
- Suggests Notch1 signaling pathway involvement in adrenocortical tumor molecular pathogenesis.
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