<prompt> BCR-ABL1 gene fusion is seen in all of the following ExceptAcute myeloid leukemiaChronic myeloid leukemiaAcute lymphoblastic leukemiaChronic lymphocytic leukemia  <response>: Translocation between chromosome 9 and chromosome 22 leading to fusion of BCR gene with ABL1 gene is seen characteristically in chronic myeloid leukemia. However, this genetic signature is also seen in ALL where it poends a bad prognosis and in AML as per recent WHO update. 