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Breaking the waves: improved detection of copy number variation from microarray-based comparative genomic hybridization

John C Marioni email, Natalie P Thorne email, Armand Valsesia email, Tomas Fitzgerald email, Richard Redon email, Heike Fiegler email, T Daniel Andrews email, Barbara E Stranger email, Andrew G Lynch email, Emmanouil T Dermitzakis email, Nigel P Carter email, Simon Tavaré email and Matthew E Hurles email

Genome Biology 2007, 8:R228doi:10.1186/gb-2007-8-10-r228

Subject areas: Bioinformatics, Genome studies

Data "waves" in SNP array data

Kylie Louise Gorringe   (01 July 2008)  Peter MacCallum Cancer Centre email

We sometimes observe data "waves" in our Affy SNP array copy number data. It is inconsistent between samples or experimental batches and sometimes a second DNA prep or extra clean-up of the same sample removes the effect. It seems to be more common in whole-genome amplified DNA or DNA from limited sources (eg tumour biopsies). I'd be interested to know if anyone has identified why this occurs or has a solution for analysing tumor data.

Competing interests

None declared

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