POU5F1 and leukemia: For example, GATA1 partners with HNF1 in hematopoietic progenitor cells; with PPARA:RXRA in leukemia; with SRF, CDX and FOXP3 in primary T-cells; with SRY, NKX2-1, FOXF1, OCT4 and ZBTB16 in differentiated ESCs and with TAL1:TCF3 motif co-occurring in various fibroblasts.