High-resolution analysis of chromosomal imbalances using the Affymetrix 10K SNP genotyping chip.
Array-based comparative genome hybridization is a powerful tool for detecting chromosomal imbalances at high resolution. However, the design and setup of such arrays are time consuming and expensive and thus worthwhile only when large numbers of arrays will be processed. To provide a feasible solution, we have developed an algorithm that renders the publicly available Affymetrix 10K SNP genotyping chip useful for high-resolution analysis of chromosomal imbalances. We have used our newly developed algorithm to analyze data from Affymetrix 10K chips that were hybridized with DNA probes from a variety of different sources, such as primary tumors, cell lines, and blood from patients with unbalanced translocations. In summary, we were able to (i) demonstrate the capability of our method by reproduction of published and unpublished data obtained with alternative methods and (ii) identify novel imbalances that were not shown before.
Herr
Alexander
A
Institute of Clinical Genetics, Medical Faculty Carl Gustav Carus, Fetscherstrasse 74, 01307 Dresden, Germany. alexander.herr@mailbox.tu-dresden.de
Grützmann
Robert
R
Matthaei
Anja
A
Artelt
Juliane
J
Schröck
Evelin
E
Rump
Andreas
A
Pilarsky
Christian
C
D000465:Algorithms; D022202:Chromosomes, Artificial, Bacterial; D005838:Genotype; D006579:Heterozygote; D020411:Oligonucleotide Array Sequence Analysis; D020641:Polymorphism, Single Nucleotide