RNA-seq: Hormone-treated cells were homogenized and total RNA was extracted using Qiagen RNAeasy kit RNA-seq: Total RNA was isolated from the experimental cell populations and primary breast tumors using Trizol (Invitrogen). Poly-A selected, stranded RNA-seq libraries were constructed using the TruSeq Stranded mRNA kit (Illumina). ChIP-seq: Hormone-treated were harvested and ChIP was performed as per the directions provided in materials and method of the paper ChIP-seq libraries were prepared using Rubicon kits.