How to deal with duplicate gene symbol from GEO databse

Question

[Emily]

Hi, I dowloaded expression data from GEO database and then mapped gene symbol to probe ID (GPL570). I just found that there are many duplicate gene symbol although there are different probe ID and some probe have many gene symbol, for example (DDR1//MIR460). How can I deal with duplicate gene symbol and the probe that have many gene symbol?

[ATpoint]

This has been asked so many times before. Please just google 'multiple probes per gene microarray' to find these previous threads.