The results that certain miRNAs such as miR-203 regulated ABL1 expression suggest that these miRNAs may be beneficial to the patients of ALL or CML carrying the fusion genes of NUP214-ABL1 or BCR-ABL1 (Bueno et al. 2008; Furuta et al. 2010). This evidence concerns the gene BCR and chronic myelogenous leukemia, BCR-ABL1 positive.