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Potential role for second-generation tyrosine kinase inhibitors in patients with chronic myeloid leukemia harboring additional clonal chromosome abnormalities: A retrospective CML Cooperative Study Group analysis
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Potential role for second-generation tyrosine kinase inhibitors in patients with chronic myeloid leukemia harboring additional clonal chromosome abnormalities: A retrospective CML Cooperative Study Group analysis
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Potential role for second-generation tyrosine kinase inhibitors in patients with chronic myeloid leukemia harboring additional clonal chromosome abnormalities: A retrospective CML Cooperative Study Group analysis
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Journal Article
Potential role for second-generation tyrosine kinase inhibitors in patients with chronic myeloid leukemia harboring additional clonal chromosome abnormalities: A retrospective CML Cooperative Study Group analysis
2019
Overview
Tyrosine kinase inhibitor (TKI) treatment is the standard of care for patients with chronic myeloid leukemia (CML). Even in the imatinib era, the presence of 'clonal chromosomal abnormalities' in the Philadelphia chromosome (CCA/Ph+) at diagnosis reportedly increased the risk of disease progression and predicted shorter survival. However, it remains unclear whether CCA/Ph+ is a poor prognostic marker in the era of new-generation TKIs. The data of patients with CML in the chronic phase (CP) that were extracted from the CML Cooperative Study Group database were retrospectively analyzed. Of the 328 eligible patients, 33 (10.1%) had CCA/Ph+, including 9 major route and 24 minor route aberrations. The characteristics of patients with and without CCA/Ph+ were similar; however, the proportion of blasts was higher among patients with CCA/Ph+. Notably, the survival rate of patients with CCA/Ph+ was not inferior to that of patients without CCA/Ph+, and there were no differences in responses to TKIs. All 9 patients with major route CCA/Ph+ attained a major molecular response (MMR) with no disease progression, and 8 ultimately achieved a deep molecular response. In particular, the median interval between TKI initiation and achievement of MMR was shorter in patients initially treated with a second-generation TKI than in those treated with imatinib (5 vs. 10 months). The present retrospective study, thus, revealed favorable treatment outcomes in CML-CP patients with CCA/Ph+ treated with second-generation TKIs. The data indicated that administering second-generation TKIs as first-line treatments is preferable in CML-CP patients with CCA/Ph+.
Publisher
D.A. Spandidos,Spandidos Publications,Spandidos Publications UK Ltd
Subject
/ Adult
/ Aged
/ Analysis
/ Chromosome Aberrations - drug effects
/ clonal chromosome abnormality
/ Clonal Evolution - drug effects
/ Female
/ Humans
/ Imatinib Mesylate - administration & dosage
/ Imatinib Mesylate - adverse effects
/ Leukemia
/ Leukemia, Myelogenous, Chronic, BCR-ABL Positive - drug therapy
/ Leukemia, Myelogenous, Chronic, BCR-ABL Positive - genetics
/ Leukemia, Myelogenous, Chronic, BCR-ABL Positive - pathology
/ Male
/ Patients
/ Phenols (Class of compounds)
/ Philadelphia Chromosome - drug effects
/ Protein Kinase Inhibitors - administration & dosage
/ Protein Kinase Inhibitors - adverse effects
/ Tyrosine
