The invention provides a combination of an isolated peptide or peptidomimetic that includes the sequence of SEQ ID NO: 1 or a homolog thereof, and an isolated peptide or peptidomimetic that includes the sequence of SEQ ID NO: 2. The invention also provides a method of treating a BCR-ABL associated disease or a c-ABL associated disease in a subject. The method is based on the use of the aforementioned combination of one or more isolated peptides or peptidomimetics.