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Leuk Res. 2013 May;37(5):520-30. doi: 10.1016/j.leukres.2013.01.014. Epub 2013 Feb 12.

Aberrant activation of ROS1 represents a new molecular defect in chronic myelomonocytic leukemia.

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  • 1Division of Hematology and Internal Medicine, Department of Clinical and Biological Sciences, University of Turin, Turin, Italy.


Chronic myelomonocytic leukemia (CMML) is a clonal disorder sharing features of myelodysplastic syndromes and chronic myeloproliferative neoplasms. Although rare chromosomal aberrations and point mutations are reported in CMML, the molecular defects underlying CMML are largely unknown. ROS1 encodes a tyrosine kinase that is abnormally expressed and translocated in brain and lung cancers. In this study we show that ROS1 is abnormally activated in the CD34+ compartment of approximately 70% of CMML patients resulting in the activation of the Erk/Akt pathways through the Grb2/SOS complex thus revealing a central oncogenic role for ROS1 in CMML which might represent a molecular target.

Copyright © 2013 Elsevier Ltd. All rights reserved.

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