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  • Title: [Monitoring of plasma concentration of imatinib mesylate in patients with chronic myeloid leukemia].
    Author: Chen C, Wang W, Xu CG, Hou M, Wang LQ, Liu CF, Song Q, Ji CY.
    Journal: Zhonghua Xue Ye Xue Za Zhi; 2011 Jul; 32(7):450-3. PubMed ID: 22213863.
    Abstract:
    OBJECTIVE: To analyze the clinical efficacy of imatinib mesylate (IM) for Ph-positive or BCR-ABL positive chronic myeloid leukemia (CML) to couple the trough plasma concentrations (C mins) of IM with clinical responses and adverse events (AEs). METHODS: One hundred and one CML patients received IM therapy, and Cmins of IM were determined in 30 patients. RESULTS: (1) Cumulative complete hematological response (CHR), major cytogenetic response (MCyR), complete cytogenetic response (CCyR) and negative BCR/ABL fusion gene rates were 96.6%, 86.5%, 77.5% and 47.2%, respectively, in CML-CP patients. In accelerated and blastic phases (AP and BC) patients, CHR, MCyR, CCyR and negative BCR-ABL fusion gene rates were 58.3%, 25.0%, 25.0%, 8.3%, respectively. (2) Mean Cmins of IM was significantly higher in the CCyR at 1 year [(1472 +/- 482) microg/L] group than in the non-CCyR at 1 years group [(1067 +/- 373) microg/L] (P < 0.05), and higher in the MMR at 1 year group than in the non-MMR at 1 years group [(1624 +/- 468) microg/L vs (1137 +/- 404) microg/L, P < 0.05]. CONCLUSION: IM significantly improves cytogenetic and molecular response, event-free survival, and overall survival for patients with Ph-positive CML. The Cmins of IM exerts a significant impact on clinical response (CCyR and MMR at 1 year).
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