PCSK7 and B-cell chronic lymphocytic leukemia: The strongest eight contributors of this analysis included ARPC4, EBI3, RPP7A, PCSK7, DNPEP, Corf61, PDXK, and CWF19L1, and, combined, these eight genes could segregate the CLL patients into high and low-risk groups with an HR of 7.47 (Figure S1D).