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Updated: Aug 19, 2026

Array Comparative Genomic Hybridization (Array CGH) for Detection of Genomic Copy Number Variants
Published on: February 21, 2015
Analysis of chromosomal imbalances by comparative genomic hybridisation of pigmented villonodular synovitis
Irina Berger1, Ralf Rieker, Volker Ehemann
1Institute of Pathology, Ruprecht-Karls-University, Im Neienheimer Feld 220/221, Heidelberg D-69120, Germany. irina_berger@med.uni-heidelberg.de
Abstract:
Using comparative genomic hybridisation, DNA copy number changes were investigated in 15 cases of pigmented villonodular synovitis of the knee joint. Additionally DNA content was analysed by flow cytometry. Screening revealed numerical chromosomal imbalances in five of the examined cases. A total number of 18 gains were detected. The most frequent gains involved subregions of chromosomal arms 22q and 16p and 16q. No losses were found. One of the cases showed an aneuploid DNA-pattern, which actually proved to be the case with the most numerical chromosomal changes.
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Comparing Copy Number Variations and SNPs
Copy number variations or CNVs are the structural variations that cover more than 1kb of DNA sequence. The single nucleotide polymorphism (SNP), on the other hand, is a single nucleotide change or a point mutation that is found in more than 1%...

