ChIP coupled with massively parallel DNA sequencing (ChIP-seq) was performed as previously described31 (link),32 (link). The following antibodies were used for ChIP: anti-H3K27ac (Abam, ab4729) and anti GATA3(Santa Cruz, sc-22206X). For each ChIP, 10 μg of antibody was added to 3 ml of sonicated nuclear extract. Illumina sequencing, library construction and ChIP-seq analysis methods were previously described32 (link). ChIP-seq datasets are available under super series GSE65664, and relevant accession numbers are shown in Supplemental Table 2.