ARIH2 and B-cell chronic lymphocytic leukemia: Altogether, these findings suggest that in CLL samples A‐D, pPTPN11 could block the expression of ARIH2 (this protein was not detected in A–D samples) and, therefore, its suppressive leukemic effect, while the expression of ARIH2 is not blocked and remains high in MBL, blocking CLL development and progression in the later MBL (sample E) case [72].