BCR and B-cell chronic lymphocytic leukemia: Differentially expressed miRNA (DEM) analysis for IGHV mutation status identified 38 DEMs (16 downregulated and 22 upregulated in U-CLL) at FDR ≤ 0.05 and log2FC ≥ ±1 (Fig. 1C(ii)), but 0 DEMs for BCR signalling capacity (Fig. 1C(iii)).