MSX1 and diffuse large B-cell lymphoma: Thus for example, NKX2-1 is ectopically expressed in diffuse large B-cell lymphoma (DLBCL), and the hematopoietic NKL homeobox genes NKX2-3 and NKX6-3 are overexpressed while MSX1 is downregulated in particular B-cell lymphomas [21, 26–28].