As seen in other neoplasias, Wang and colleagues also underscored an EZH2-mediated epigenetic activity of this lncRNA in MCL, since MALAT1 knock-down reduced EZH2 levels and decreased H3K27me3 at the promoter of the target genes p21WAF1 and p27KIP1, leading to cell cycle arrest at G1/S phase [192]. The gene discussed is MALAT1; the disease is mantle cell lymphoma.