USP19 and lung cancer: Among members of the ZMYND family, programmed cell death 2 (PDCD2)/ZMYND7, ubiquitin specific protease 19(USP19)/ZMYND9, and beta catenin in lung cancer (BLU)/ZMYND10 only contain MYND motif in their respective carboxylterminus, with length between 30 and 40 amino acid residues.