Detection of chromosome copy number alterations in metanephric adenomas by array comparative genomic hybridization

Chin Chen Pan, Jonathan Ira Epstein

Research output: Contribution to journalArticle

Abstract

Metanephric adenoma is a rare benign renal tumor typically found in adults. Previous cytogenetic analyses, including karyotyping, fluorescence in situ hybridization (FISH), and comparative genomic hybridization, have yielded conflicting results regarding the somatic genetic aberrations of these tumors. In this study, we investigated the genomic profile of nine cases of metanephric adenoma using array comparative genomic hybridization. Two cases revealed multiple chromosomal gains and losses. Three cases showed sporadic chromosomal imbalances involving no more than three chromosomes. Four cases showed normal chromosome copy numbers. The gain of chromosome 19 was the most common finding (five cases), and FISH using 19p and 19q telomeric probes further confirmed this finding. We did not observe consistent gains of chromosomes 7 and 17, which are common in papillary renal cell carcinoma, neither did we find chromosomal alterations frequently present in Wilms tumors, including chromosome gains of 1q, 7q, and 12, and losses of 11p and 16q. Our series demonstrates that the genetic profile of metanephric adenoma is fundamentally distinct from those of papillary renal cell carcinoma and Wilms tumor.

Original languageEnglish (US)
Pages (from-to)1634-1640
Number of pages7
JournalModern Pathology
Volume23
Issue number12
DOIs
StatePublished - Dec 2010

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Keywords

  • array comparative genomic hybridization
  • fluorescence in situ hybridization
  • metanephric adenoma

ASJC Scopus subject areas

  • Pathology and Forensic Medicine

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