TLR4 and B-cell chronic lymphocytic leukemia: Analysis of survival curves revealed that TTFT was significantly shorter in the group of patients with a low level of TLR4(3) expression compared to the group of patients with a high level of TLR4(3) expression in BMMC, thereby we could indicate the negative prognostic value of low TLR4(3) expression assessed in the bone marrow compartment in CLL.