Pathology General 3a141c23 Which of the following is not compatible with a diagnosis of juvenile myelomonocytic leukemia? A Peripheral blood monocytosis, more than 1 x 107L B Increased Hemoglobin F levels for age C Presence of bcr/abl fusion gene D GM - CSF hypersensitivity of myeloid progenitors in vitro High-Yield Explanation . Presence of bcr/abl fusion gene