LCP1 is expressed in hematopoietic cell lineages and various cancers, where it regulates actin dynamics and cellular adhesion, facilitating tumor progression.37–39 While its role has been established in other hematologic malignancies such as chronic lymphocytic leukemia,40 direct evidence of its production by CNSL cells remains to be demonstrated. This evidence concerns the gene LCP1 and B-cell chronic lymphocytic leukemia.