I have DNA methlation data. I want get the relationship of cgXXX and gene symbol. But I don't know where to get this relationship file.
The "Manifest" files with that info are available at the Illumina website.
Much more easily, in R, you can retrieve them like this:
anno <- as.data.frame(getAnnotation(IlluminaHumanMethylationEPICanno.ilm10b4.hg19))
To get a table with probe IDs and associated information including genes, etc. Or you can use the coordinates shown there to map to genes via other packages (e.g. ChIPseeker).
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