TNRC6B and B-cell chronic lymphocytic leukemia: In conclusion, the findings of the present study indicated that SNPs located at DROSHA, DICER1, SND1, TNRC6B, TRBP and CNOT1 genes, involved in miRNAs biogenesis pathway, as well as in miR196a2 and miR1206 may contribute to the risk of CLL.