How To Handle The Case A Affymetrix Probe Set Id Mapped To Multiple Genes?

Question

[fengtian]

Dear all,

In the Affymetrix annotation file, I find that some probe set ID are mapped to multiple genes separated by '///', such as 200012_x_at is mapped to RPL21P16///RPL21P119///RPL21. How to handle this case?

Thank you!

[Neilfws]

Depends what you want to do with the array data?

[fengtian]

I need do GSEA analysis. So is there a general way to handle this case?

Thanks

Answer 1

[arno.guille]

i suggest you to use this database http://compbio.dfci.harvard.edu/tgi/cgi-bin/magic/r1.pl