Cytogenetics in the management of "chronic myeloid leukemia": an update by the Groupe francophone de cytogénétique hématologique (GFCH).

Cytogenetic evaluation is one the most important criteria for diagnosis and response to treatment in chronic myeloid leukemia, and recent baseline prognostic factors including particular additional clonal cytogenetic abnormalities have been established. The French cytogenetic group in hematology GFCH proposes here an updating of recommendations for cytogenetic assessment of CML in the era of tyrosine kinase inhibitors.