Dear all,


I'm working with Agilent 4X44 K human arrays. I have a vector with Agilent probenames that I would like to annotate with biomaRt. I use the following command:


getBM(attributes = c("with_agilent_wholegenome", "entrezgene","wikigene_name","wikigene_description"), filters = "with_agilent_wholegenome", values = probesS, mart = ensembl)



I get output, but although the vector probesS with my probe names only contains unique identifiers,  biomaRt returns me identifiers with some of the identifiers replicated and which get an annotation NA.

It seems like that the database is redundant. Is this possible? If not, how can I avoid this problem.



Thank you for your support,



Best regards,



Patrick De Boever


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