期刊
CLINICAL PHARMACOLOGY & THERAPEUTICS
卷 88, 期 6, 页码 809-813出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/clpt.2010.186
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Despite the outstanding results generally obtained with imatinib mesylate (IM) in the treatment of chronic myeloid leukemia (CML), some patients show a poor molecular response. To evaluate the relationship between steady-state trough plasma IM concentration (IM-C(min)) and clinical response in CML patients, we integrated data from six independent Japanese studies. Among 254 CML patients, the mean IM-C(min) was 1,010.5 ng/ml. Importantly, IM-C(min) was significantly higher in patients who achieved a major molecular response (MMR) than in those who did not (P=0.002). Multivariate analysis showed that an MMR was associated with both age (odds ratio (OR) = 0.97 (0.958-0.995); P = 0.0153) and with IM-C(min) (OR = 1.0008(1.0003-1.0015); P=0.0044). Given that patients with IM-C(min) values >1,002 ng/ml had a higher probability of achieving an MMR in our large cohort (P=0.0120), the data suggest that monitoring of IM levels in plasma may improve the efficacy of IM therapy for CML patients.
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