Further studies are ongoing to explore this possibility, and our data mining of previously published FOXP1 ChIP-seq data39 has already confirmed that FOXP1 can indeed occupy HLA, CIITA and CD74 promoters in DLBCL cells, including the OCI-Ly3 cell line studied here (Supplementary Table S6). The gene discussed is FOXP1; the disease is diffuse large B-cell lymphoma.