Composition for the inhibition of the translation of a Mect1-MAML2 chimeric gene consisting essentially of: (a) a fragment of the nucleic acid encoding the chimeric gene, and (b) a nucleic acid complementary to the fragment, and a method of inhibiting the translation of a Mect1-MAML2 chimeric gene comprising contacting a cell expressing the chimeric gene with the composition, whereupon the translation of the chimeric gene is inhibited.