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
Answer is C. . Presence of bcr/abl fusion gene