Kylie Louise Gorringe, Peter MacCallum Cancer Centre
1 July 2008
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.
Data "waves" in SNP array data
1 July 2008
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