To further assess the role of TRIM24 as a transcriptional co-activator of STAT3, we performed ChIP-quantitative-PCR (ChIP-qPCR) on ID1 using antibodies directed against TRIM24, STAT3 and H3K23ac to measure binding to the promoter of ID1 in LN229 GBM cells with or without EGFRvIII. This evidence concerns the gene STAT3 and glioblastoma.