%0 Journal Article %T Mismatch and G-Stack Modulated Probe Signals on SNP Microarrays %A Hans Binder %A Mario Fasold %A Torsten Glomb %J PLOS ONE %D 2012 %I Public Library of Science (PLoS) %R 10.1371/journal.pone.0007862 %X Single nucleotide polymorphism (SNP) arrays are important tools widely used for genotyping and copy number estimation. This technology utilizes the specific affinity of fragmented DNA for binding to surface-attached oligonucleotide DNA probes. We analyze the variability of the probe signals of Affymetrix GeneChip SNP arrays as a function of the probe sequence to identify relevant sequence motifs which potentially cause systematic biases of genotyping and copy number estimates. %U http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0007862