In a similar trend, we found ARIH2 (also known as Triad1) differentially expressed in the CLL‐like MBL sample E. Briefly, ARIH2 acts as a tumor suppressor protein and is blocked by PTPN11, a protein that was also detected in the MBL proteome dataset but at very low expression levels (up to 20‐fold less than in the CLL samples). This evidence concerns the gene ARIH2 and B-cell chronic lymphocytic leukemia.