Hi Wei, Are you using the function getEnrichedGO from ChIPpeakAnno package to get enriched GO terms? Could you please send your code snippet and sessionInfo()? Please CC the bioconductor list bioconductor@stat.math.ethz.ch so that others could benefit from or address your questions. Best regards, Julie On 12/3/10 10:41 PM, "wei yu" <yuwei4891@gmail.com> wrote: Dear Dr. julie.zhu, Could you tell me how to output GO annotation result? Thanks [[alternative HTML version deleted]]