In addition to promoters, we used enhancers derived from the OCI-Ly1 cell line using ChIP-seq and defined as regions positive for H3K4me2 and H3K27Ac but not H3K4me3 (ref. 23; since we could not perform histone modification ChIP-seq due to limited availability of patient-derived tumour tissues) We also used CTCF sites determined by ChIP-seq in the OCI-Ly1 DLBCL cell (see Methods). Here, CTCF is linked to diffuse large B-cell lymphoma.