PMID- 29397828 OWN - NLM STAT- MEDLINE DCOM- 20181115 LR - 20220114 IS - 1009-2137 (Print) IS - 1009-2137 (Linking) VI - 26 IP - 1 DP - 2018 Feb TI - [Correlation of Serum Concentration of Nilotinib with Clinical Efficacy in Patients with Chronic Myeloid Leukemia]. PG - 116-120 LID - 10.7534/j.issn.1009-2137.2018.01.019 [doi] AB - OBJECTIVE: To investigate the correlation of the serum minimal concentrations (Cmins) of nilotinib(NIL) with the clinical efficacy and adverse events (AEs) in CML patients. METHODS: A total of 54 patients were divided into two groups according to the dosage of nilotinib. 44 cases received dose of 600-800 mg/d were classified as group A; while 10 cases received dose of 400 mg/d as group B. The Cmins of nilotinib were determmined by liquid chromatography-tandem mass spectrometry. RESULTS: Median Cmins of nilotinib in 54 patients was 1.71 (0.52-5.93) microg/ml. Cmins of nilotinib in group A and group B were 2.09+/- 1.21 microg/ml and 0.94+/- 0.27 microg/ml respectively, Cmins of group A was significantly higher than that of group B (P=0.001). In group A, 24 out of 44 cases obtained major molecular response (MMR) in 12 months, while 20 cases did not reach MMR in 12 months; the serum drug concentrations were 1.70+/- 0.75 microg/ml and 2.03+/- 0.82 microg/ml respectively, without statistically significant differences between these 2 subgroups(P=0.154). However, Cmins of nilotinib in patients with III-IV grade of adverse events were significantly higher than those in patients with 0-II grade of adverse events (3.09+/- 1.76 microg/ml vs 1.76+/- 0.68 microg/ml)(P=0.018). There was no statistic diffence in Cmins of nilotinib with MMR in 12 months of group A MMR 1.15+/- 0.27 microg/ml vs no MMR 0.83+/- 0.24 microg/ml(P=0.051). The MMR rate at 12 months in group A was 54.5%(24/44) and that in group B was 40%(4/10) (P=0.494). But the incidence of grade III-IV adverse events in group A was 29.5%(13/44), which was significantly higher than that of group B[0/10(0%)]. CONCLUSION: Cmins of nilotinib shows significant individual differences. The Cmins of nilotinib relate with the dosage and grade III-IV of adverse events. The lower dose of nilotinib may maintain a good therapeutic effect and significantly reduce the adverse events. FAU - Wang, Tong AU - Wang T AD - Department of Hematology, The First Affiliated Hospital of Soochow University, Suzhou 215000, Jiangsu Province, China. FAU - Li, Cai-Xia AU - Li CX AD - Department of Hematology, The First Affiliated Hospital of Soochow University, Suzhou 215000, Jiangsu Province, China. E-mail:licaixia@suda.edu.cn. FAU - Chen, Xiao-Chen AU - Chen XC AD - Department of Hematology, The First Affiliated Hospital of Soochow University, Suzhou 215000, Jiangsu Province, China. FAU - Gu, Cai-Hong AU - Gu CH AD - Department of Hematology, The First Affiliated Hospital of Soochow University, Suzhou 215000, Jiangsu Province, China. FAU - Yang, Dan AU - Yang D AD - Department of Hematology, The First Affiliated Hospital of Soochow University, Suzhou 215000, Jiangsu Province, China. FAU - Wang, Pu AU - Wang P AD - Department of Hematology, The First Affiliated Hospital of Soochow University, Suzhou 215000, Jiangsu Province, China. FAU - Zou, Qiu AU - Zou Q AD - Department of Hematology, The First Affiliated Hospital of Soochow University, Suzhou 215000, Jiangsu Province, China. FAU - Wu, De-Pei AU - Wu DP AD - Department of Hematology, The First Affiliated Hospital of Soochow University, Suzhou 215000, Jiangsu Province, China. LA - chi PT - Journal Article PL - China TA - Zhongguo Shi Yan Xue Ye Xue Za Zhi JT - Zhongguo shi yan xue ye xue za zhi JID - 101084424 RN - 0 (Antineoplastic Agents) RN - 0 (Pyrimidines) RN - 8A1O1M485B (Imatinib Mesylate) RN - F41401512X (nilotinib) SB - IM MH - Antineoplastic Agents MH - Humans MH - Imatinib Mesylate MH - *Leukemia, Myelogenous, Chronic, BCR-ABL Positive MH - Pyrimidines MH - Treatment Outcome EDAT- 2018/02/06 06:00 MHDA- 2018/11/16 06:00 CRDT- 2018/02/06 06:00 PHST- 2018/02/06 06:00 [entrez] PHST- 2018/02/06 06:00 [pubmed] PHST- 2018/11/16 06:00 [medline] AID - 1009-2137(2018)01-0116-05 [pii] AID - 10.7534/j.issn.1009-2137.2018.01.019 [doi] PST - ppublish SO - Zhongguo Shi Yan Xue Ye Xue Za Zhi. 2018 Feb;26(1):116-120. doi: 10.7534/j.issn.1009-2137.2018.01.019.