NKX2-3 and B-cell chronic lymphocytic leukemia: On the other hand, NKX2-3 expression was found in only 2 out of 244 samples (0.8%) from diffuse large B-cell lymphoma (DLBCL), follicular lymphoma, mantle cell lymphoma, chronic lymphocytic leukaemia or multiple myeloma (P=0.001; Fisher exact test; Fig. 1f).