Dear All, I want to write a function that performs hypergeometric test for over representation against GO and KEGG, for the given example of data of background.Datat: Entrez identifiers of all probes present on Illumina human HT12 v3. microarray DEgenes.Data: Differentially expressed genes in a real study carried out on Illumina HT12 v3. microarray But, the relevant documentation provided in "GOstats" and "topGO" are explained using a microarray data set from a clinical trial in acute lymphoblastic leukemia (ALL). Now, I want to know, what are the changes/terms I have to insert, to apply the same to my available data. Could anyone please help me....Thanking All. Regards, Pradee.