Hi, I am relatively new to coding, and I am trying to analyse a microarray dataset (GSE37147). I have used GeoQuery to obtain this dataset, and I am trying to convert the probe IDs (e.g. 10000_at) into HGNC symbols for DGE. However, i cant seem to find the correct annotation file with the IDs and gene symbols, nor can I find this specific platform on biomaRt. Any help would be greatly appreciated. Thank You

> gse <- getGEO("GSE37147")
> GSE37147 <- gse[[1]]
> expression_37147 <- exprs(GSE37147)
> expression_37147 <- as.data.frame(expression_37147)
> clinical_37147 <- pData(GSE37147)
> clinical_37147 <- as.data.frame(clinical_37147)
> IDs <- rownames(expression_37147)
> fdata <- fData(GSE37147)
> annotation(GSE37147)
[1] "GPL13243"

The brainarray annotations are very confusing, as the IDs in the fData look like affymetrix probe IDs. To clarify, the brainarray project mapped the original probes to, in this case, Entrez Gene IDs. Therefore, the SPOT_ID column actually represents an Entrez Gene ID. For example, the 10653_at id is mapped to entrez gene 10653. https://www.ncbi.nlm.nih.gov/gene/10653. If you need more information about the genes, you can use the org.hg.eg.db or the EnsemblDB packages, for example. However, now that you have entrez gene ids for each row of your ExpressionSet, you may have all the information you need.