The majority (90%) of cases have not had detectable cytogenetic abnormalities. Most importantly, the Philadelphia chromosome and other BCR/ABL fusion genes are not detected.
Chronic neutrophilic leukemia
Prolymphocytic leukemia
Leukemoid reaction
Chronic lymphocytic leukemia
Large granular lymphocytic leukemia
Mixed-phenotype acute leukemia
Acute monocytic leukemia
Acute myeloid leukemia