Activity of a specific inhibitor of the BCR-ABL tyrosine kinase in the blast crisis of chronic myeloid leukemia and acute lymphoblastic leukemia with the Philadelphia chromosome. - Druker,B.J.; Sawyers,C.L.; Kantarjian,H.; Resta,D.J.; Reese,S.F.; Ford,J.M. (N Engl J Med, 2001)