Abstract
The past studies found that the treatment of chronic myeloid leukemia (CML) with imatinib can induce the macrocytic anemia, moreover the incidence of anemia increases along with enhancement of imatinib concentration. This study was aimed to evaluate the potential relation of erythrocyte mean corpuscular volume (MCV) increase after the treatment with tyrosine kinase inhibitors (TKI) with the therapeutic response in patients with CML-chronic phase (CML-CP). The clinical and hematologic data including MCV, molecular and cytogenetic response of 119 patients with CML-CP were collected after treatment with TKIs, and the relation of MCV changes after treatment with the clinical characteristics and therapeutic efficacy for patients with CML-CP was analyzed. The MCV in patients treated with TKIs for 12 months significantly increased as compared with that at initial diagnosis (P<0.05). The proportion of patients with increased MCV in group of complete cytogenetic response (CCyR) was significantly higher than that in group of non-CCyR (P<0.05). As compared with decreased MCV group, the patients in increased MCV group much more easily achieved CCyR after treatment for 6, 12 months (P<0.05, P<0.05) respectively, furthermore, much more easily maintained MMR (P<0.05). The MCV as a parameter which is easily acquired may be a new marker for prodecting the therapeutic response of patients treated with TKIs.
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