BCL2 and mantle cell lymphoma: ZEB1, a classic EMT transcription driver downstream to the β‐catenin‐dependent canonical Wnt signaling, has been shown to be essential for the tumorigenic potential of mantle cell lymphoma with anti‐apoptotic genes MCL1 and BCL2 acting as its downstream effectors (Sánchez‐Tilló et al., 2014).