ARID4A and myeloid neoplasm: Interestingly, CALR-mutated cells show the decreased expression of several epigenetic regulators (i.e., EZH2, SUZ12, DNMT1, SETD2, MLL3, ARID4A, ARID4B, SETDB2), sister chromatid cohesins (i.e., SMC1A, SMC3, RAD21, STAG2), and splicing factors (i.e., SF3B1, SRSF1, ZFR), some of which were already described as mutated or inactivated in myeloid malignancies (Fig. 4b–d)31–38.