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He S, Shao Q, Zhao J, Bian J, Zhao Y, Hao X, Li Y, Hu L, Liu B, He H, Huang L, Jiang Q. Population pharmacokinetics and pharmacogenetics analyses of imatinib in Chinese patients with chronic myeloid leukemia in a real-world situation. Cancer Chemother Pharmacol 2023; 92:399-410. [PMID: 37624393 DOI: 10.1007/s00280-023-04581-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Accepted: 08/09/2023] [Indexed: 08/26/2023]
Abstract
BACKGROUND Imatinib is presently the first-line choice for the treatment of chronic myeloid leukemia. However, there are limited real-world data on Chinese patients to support individualized medicine. This work aims to characterize population pharmacokinetics in Chinese patients with chronic myeloid leukemia, investigate the effects of several covariates on imatinib exposure, and provide support for personalized medicine and dose reduction. METHODS A total of 230 patients with chronic myeloid leukemia were enrolled, and 424 steady-state concentration measurements were taken to perform the population pharmacokinetic analysis and Monte Carlo simulations with Phoenix NLME software. The effects of the demographic, biological, and pharmacogenetic (ten SNP corresponding to CYP3A4, CYP3A5, ABCB1, ABCG2, SCL22A1 and POR) covariates on clearance were evaluated. RESULTS A one-compartmental model best-described imatinib pharmacokinetics. The hemoglobin and the estimated glomerular filtration rate (< 85 mL⋅min-1⋅1.73 m2) were associated with imatinib clearance. The genetic polymorphisms related to pharmacokinetics were not found to have a significant effect on the clearance of imatinib. The final model estimates of parameters are: ka (h-1) = 0.329; Vd/F (L) = 270; CL/F (L⋅h-1) = 7.60. CONCLUSIONS Key covariates in the study population accounting for variability in imatinib exposure are hemoglobin and the estimated glomerular filtration rate. There is some need for caution when treating patients with moderate-to-severe renal impairment and significant hemoglobin changes.
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Affiliation(s)
- Shiyu He
- Department of Pharmacy, Peking University People's Hospital, No. 11 Xizhimen South Street, Xicheng District, Beijing, 100044, China
- Department of Pharmacy Administration and Clinical Pharmacy, School of Pharmaceutical Sciences, Peking University, Beijing, China
| | - Qianhang Shao
- Department of Pharmacy, Peking University People's Hospital, No. 11 Xizhimen South Street, Xicheng District, Beijing, 100044, China
| | - Jinxia Zhao
- Department of Pharmacy, Peking University People's Hospital, No. 11 Xizhimen South Street, Xicheng District, Beijing, 100044, China
- Department of Pharmacy Administration and Clinical Pharmacy, School of Pharmaceutical Sciences, Peking University, Beijing, China
| | - Jialu Bian
- Department of Pharmacy, Peking University People's Hospital, No. 11 Xizhimen South Street, Xicheng District, Beijing, 100044, China
- Department of Pharmacy Administration and Clinical Pharmacy, School of Pharmaceutical Sciences, Peking University, Beijing, China
| | - Yinyu Zhao
- Department of Pharmacy, Peking University People's Hospital, No. 11 Xizhimen South Street, Xicheng District, Beijing, 100044, China
- Department of Pharmacy Administration and Clinical Pharmacy, School of Pharmaceutical Sciences, Peking University, Beijing, China
| | - Xu Hao
- Department of Pharmacy, Peking University People's Hospital, No. 11 Xizhimen South Street, Xicheng District, Beijing, 100044, China
| | - Yuanyuan Li
- Department of Pharmacy, Peking University People's Hospital, No. 11 Xizhimen South Street, Xicheng District, Beijing, 100044, China
| | - Lei Hu
- Department of Pharmacy, Peking University People's Hospital, No. 11 Xizhimen South Street, Xicheng District, Beijing, 100044, China
| | - Boyu Liu
- Department of Pharmacy, Peking University People's Hospital, No. 11 Xizhimen South Street, Xicheng District, Beijing, 100044, China
| | - Huan He
- Department of Pharmacy, Beijing Children's Hospital of Capital Medical University, Beijing, China
| | - Lin Huang
- Department of Pharmacy, Peking University People's Hospital, No. 11 Xizhimen South Street, Xicheng District, Beijing, 100044, China.
| | - Qian Jiang
- Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, No. 11 Xizhimen South Street, Xicheng District, Beijing, 100044, China.
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The Application of Virtual Therapeutic Drug Monitoring to Assess the Pharmacokinetics of Imatinib in a Chinese Cancer Population Group. J Pharm Sci 2023; 112:599-609. [PMID: 36202248 DOI: 10.1016/j.xphs.2022.09.028] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Revised: 09/28/2022] [Accepted: 09/28/2022] [Indexed: 11/06/2022]
Abstract
PURPOSE Imatinib is used in gastrointestinal stromal tumours (GIST) and chronic myeloid leukaemia (CML). Oncology patients demonstrate altered physiology compared to healthy adults, e.g. reduced haematocrit, increased α-1 acid glycoprotein, decreased albumin and reduced glomerular filtration rate (GFR), which may influence imatinib pharmacokinetics. Given that Chinese cancer patients often report raised imatinib plasma concentrations and wider inter-individual variability reported in trough concentration when compared to Caucasian cancer patients, therapeutic drug monitoring (TDM) has been advocated. METHOD This study utilised a previously validated a Chinese cancer population and assessed the impact of imatinib virtual-TDM in Chinese and Caucasian cancer populations across a dosing range from 200-800 mg daily. RESULTS Staged dose titration to 800 mg daily, resulted in recapitulation to within the target therapeutic range for 50 % (Chinese) and 42.1% (Caucasian) subjects possessing plasma concentration < 550 ng/mL when dosed at 400 mg daily. For subjects with plasma concentrations >1500 ng/mL when dosed at 400 mg daily, a dose reduction to 200 mg once daily was able to recover 67 % (Chinese) and 87.4 % (Caucasian) patients to the target therapeutic range. CONCLUSION Virtual TDM highlights the benefit of pharmacokinetic modelling to optimising treatments in challenging oncology population groups.
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Jiang X, Fu Q, Jing Y, Kong Y, Liu H, Peng H, Rexiti K, Wei X. Personalized Dose of Adjuvant Imatinib in Patients with Gastrointestinal Stromal Tumors: Results from a Population Pharmacokinetic Analysis. Drug Des Devel Ther 2023; 17:809-820. [PMID: 36942304 PMCID: PMC10024496 DOI: 10.2147/dddt.s400986] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2022] [Accepted: 03/06/2023] [Indexed: 03/15/2023] Open
Abstract
Purpose Imatinib is the first-line treatment for patients with gastrointestinal stromal tumors (GIST) after surgery. However, its pharmacokinetic profile varies remarkably between individuals and has not been well characterized in postoperative Chinese patients with GIST. Therefore, this study aimed to develop a population pharmacokinetic (PPK) model and recommend appropriate doses for different patients to achieve the target trough concentration in such a population. Patients and Methods A total of 110 surgically treated GIST patients were enrolled, of which 85 were applied to conduct a PPK analysis with a nonlinear mixed-effect model and 25 for external validation of the model. Demographic and biomedical covariates, as well as six single nucleotide polymorphisms were tested to explore the sources of variation in pharmacokinetic parameters of imatinib. Monte Carlo simulations were performed to establish the initial dosing regimens. Results A one-compartment model was established in postoperative GIST patients. The red blood cell count (RBC) and ABCG2 rs2231142 were observed to have a significant effect on the clearance of imatinib. The typical values estimated by the final model were 9.72 L/h for clearance (CL/F) and 229 L for volume of distribution (V/F). Different from the fixed dose regimen of 400 mg each day, patients carrying rs2231142 heterozygous type and with a lower level of RBC (2.9 × 1012/L), 300 mg imatinib daily is enough to achieve the target trough concentration. When RBC rises to 4.9 × 1012/L, 500 mg daily is recommended. For patients with rs2231142 GG genotype, 500 mg a day is required at RBCs of 3.9 × 1012/L and 4.9 × 1012/L. Conclusion RBC and rs2231142 contribute to the pharmacokinetic variation of imatinib and personalized dose recommendations based on patient characteristics may be necessary.
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Affiliation(s)
- Xuehui Jiang
- School of Pharmacy, Nanchang University, Nanchang, People’s Republic of China
- Department of Pharmacy, The First Affiliated Hospital of Nanchang University, Nanchang, People’s Republic of China
| | - Qun Fu
- Jiangxi Provincial Drug Inspector Center, Jiangxi Provincial Drug Administration, Nanchang, People’s Republic of China
| | - Yan Jing
- Department of Pharmacy, Linyi Central Hospital, Linyi, People’s Republic of China
| | - Ying Kong
- Department of Pharmacy, The First Affiliated Hospital of Nanchang University, Nanchang, People’s Republic of China
| | - Hong Liu
- Department of Pharmacy, The First Affiliated Hospital of Nanchang University, Nanchang, People’s Republic of China
| | - Hongwei Peng
- Department of Pharmacy, The First Affiliated Hospital of Nanchang University, Nanchang, People’s Republic of China
| | - Kaisaner Rexiti
- School of Pharmacy, Nanchang University, Nanchang, People’s Republic of China
- Department of Pharmacy, The First Affiliated Hospital of Nanchang University, Nanchang, People’s Republic of China
| | - Xiaohua Wei
- Department of Pharmacy, The First Affiliated Hospital of Nanchang University, Nanchang, People’s Republic of China
- Correspondence: Xiaohua Wei, Department of Pharmacy, The First Affiliated Hospital of Nanchang University, No. 17 Yong Wai Zheng Street, Nanchang, 330006, People’s Republic of China, Tel +86 13803523639, Email
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Shriyan B, Mehta P, Patil A, Jadhav S, Kumar S, Puri AS, Govalkar R, Krishnamurthy MN, Punatar S, Gokarn A, Khattry N, Gota V. Role of ADME gene polymorphisms on imatinib disposition: results from a population pharmacokinetic study in chronic myeloid leukaemia. Eur J Clin Pharmacol 2022; 78:1321-1330. [PMID: 35652931 DOI: 10.1007/s00228-022-03345-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 05/24/2022] [Indexed: 11/29/2022]
Abstract
PURPOSE Imatinib is a substrate of CYP3A4, ABCB1 and ABCG2, and is known to have wide variability in pharmacokinetics (PK). At the same time, a clear relationship between drug levels and response also exists for imatinib in chronic myeloid leukaemia (CML). Therefore, pharmacogenetic-based dosing of imatinib is an attractive proposition. This study aims to characterize the population pharmacokinetics of imatinib in order to identify significant covariates including pharmacogenetic variants. METHODS Forty-nine patients with CML were enrolled in the study after being on imatinib for at least 4 consecutive weeks. Steady-state pharmacokinetic sampling was performed either in a sparse (4 samples each, n = 44) or intensive manner (9 samples each, n = 5). An additional pharmacogenetic sample was also collected from all patients. Plasma imatinib levels were estimated using a validated HPLC method. Pharmacogenetic variants were identified using the PharmacoScan array platform. Population pharmacokinetic analysis was carried out using NONMEM v7.2. Seven SNPs within CYP3A4, ABCB1 and ABCG2 genes were evaluated for covariate effect on the clearance of imatinib. RESULTS Imatinib PK was well characterized using a one-compartment model with zero-order absorption. The clearance and volume of distribution were found to be 10.2 L/h and 389 L respectively. Only SNP rs1128503 of the ABCB1 gene had a small but insignificant effect on imatinib clearance, with a 25% reduction in clearance observed in patients carrying the polymorphism. Twenty-three out of forty-nine patients (47%) carried the polymorphic allele, of whom 17 were heterozygous and six were homozygous. CONCLUSION Our study conclusively proves that genetic polymorphisms in the CYP3A4 and ABC family of transporters do not have any role in the personalized dosing of imatinib in CML.
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Affiliation(s)
- Bharati Shriyan
- Department of Clinical Pharmacology, Advanced Centre for Treatment, Research and Education in Cancer, Tata Memorial Centre, Navi Mumbai, 410210, India
| | - Parsshava Mehta
- Department of Clinical Pharmacology, Advanced Centre for Treatment, Research and Education in Cancer, Tata Memorial Centre, Navi Mumbai, 410210, India
| | - Anand Patil
- Department of Clinical Pharmacology, Advanced Centre for Treatment, Research and Education in Cancer, Tata Memorial Centre, Navi Mumbai, 410210, India
| | - Shraddha Jadhav
- Department of Clinical Pharmacology, Advanced Centre for Treatment, Research and Education in Cancer, Tata Memorial Centre, Navi Mumbai, 410210, India
| | - Sharath Kumar
- Department of Clinical Pharmacology, Advanced Centre for Treatment, Research and Education in Cancer, Tata Memorial Centre, Navi Mumbai, 410210, India
| | - Apeksha S Puri
- Department of Clinical Pharmacology, Advanced Centre for Treatment, Research and Education in Cancer, Tata Memorial Centre, Navi Mumbai, 410210, India
| | - Ravina Govalkar
- Department of Clinical Pharmacology, Advanced Centre for Treatment, Research and Education in Cancer, Tata Memorial Centre, Navi Mumbai, 410210, India.,Gahlot Institute of Pharmacy, Koparkhairane, Navi Mumbai, 400709, India
| | - Manjunath Nookala Krishnamurthy
- Department of Clinical Pharmacology, Advanced Centre for Treatment, Research and Education in Cancer, Tata Memorial Centre, Navi Mumbai, 410210, India.,Homi Bhabha National Institute, Mumbai, 400094, India
| | - Sachin Punatar
- Department of Medical Oncology, Tata Memorial Hospital, Mumbai, 400012, India.,Homi Bhabha National Institute, Mumbai, 400094, India
| | - Anant Gokarn
- Department of Medical Oncology, Tata Memorial Hospital, Mumbai, 400012, India.,Homi Bhabha National Institute, Mumbai, 400094, India
| | - Navin Khattry
- Department of Medical Oncology, Tata Memorial Hospital, Mumbai, 400012, India.,Homi Bhabha National Institute, Mumbai, 400094, India
| | - Vikram Gota
- Department of Clinical Pharmacology, Advanced Centre for Treatment, Research and Education in Cancer, Tata Memorial Centre, Navi Mumbai, 410210, India. .,Homi Bhabha National Institute, Mumbai, 400094, India.
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Lachi-Silva L, Barth AB, Santos GML, Ahamadi M, Bruschi ML, Kimura E, de Araújo BV, Diniz A. Population pharmacokinetics of orally administrated bromopride: Focus on the absorption process. Eur J Pharm Sci 2020; 142:105081. [PMID: 31669384 DOI: 10.1016/j.ejps.2019.105081] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Revised: 08/26/2019] [Accepted: 09/17/2019] [Indexed: 11/26/2022]
Abstract
Bromopride is a prokinetic and antiemetic drug used to treat nausea and vomiting. Although its prescription is common in Brazil, there is a lack of studies about bromopride pharmacokinetics. Therefore, the aims of this study were to investigate the population pharmacokinetics of bromopride and to evaluate the influence of covariates on its absorption. This study is a retrospective analysis of data collected from bioequivalence studies. The data was modeled using MONOLIX 2018R2. Assuming one-compartment and linear elimination, the absorption phase was evaluated with different structural models. The model of sequential first- and zero-order with combined error and exponential inter-individual variability in all parameters best described the atypical absorption profile of bromopride. Population estimates were first-order absorption rate (ka) of 0.08 h - 1, fraction of dose absorbed by first-order (Fr) of 32.60%, duration of the zero-order absorption (Tk0) of 0.88 h with latency time (Tlag) of 0.47 h, volume of distribution of 230 l and clearance of 46.80 l h - 1. Bodyweight affects Tk0, dosage form was found to correlate with Tk0 and Tlag, while gender affects Tlag. However, simulations evaluating the clinical importance of these covariates on steady-state indicated minimal changes on bromopride exposure. The mixed absorption model was reasonable to describe the absorption process of bromopride because it had the flexibility to fit multiple-peaks profile and shows good agreement with physicochemical properties of drug.
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Affiliation(s)
- Larissa Lachi-Silva
- Pharmacokinetics and Biopharmaceutical Laboratory (PKBio), Pharmacy Departament, State University of Maringa, Maringá-PR, Brazil
| | - Aline B Barth
- Pharmacokinetics and Biopharmaceutical Laboratory (PKBio), Pharmacy Departament, State University of Maringa, Maringá-PR, Brazil
| | | | - Malidi Ahamadi
- Pharmacokinetics and Biopharmaceutical Laboratory (PKBio), Pharmacy Departament, State University of Maringa, Maringá-PR, Brazil
| | - Marcos Luciano Bruschi
- Laboratory of Research and Development of Drug Delivery System (LABSLiF), Pharmacy Department, State University of Maringa, Maringá-PR, Brazil
| | - Elza Kimura
- Clinical Research and Bioequivalence Center (NPC-BIO), University Hospital, State University of Maringa, Maringá-PR, Brazil
| | - Bibiana Verlindo de Araújo
- Pharmaceutical Sciences Graduate Program, Federal University of Rio Grande do Sul, Porto Alegre-RS, Brazil
| | - Andréa Diniz
- Pharmacokinetics and Biopharmaceutical Laboratory (PKBio), Pharmacy Departament, State University of Maringa, Maringá-PR, Brazil.
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Lin S, Shaik N, Martinelli G, Wagner AJ, Cortes J, Ruiz‐Garcia A. Population Pharmacokinetics of Glasdegib in Patients With Advanced Hematologic Malignancies and Solid Tumors. J Clin Pharmacol 2019; 60:605-616. [PMID: 31769065 PMCID: PMC7187372 DOI: 10.1002/jcph.1556] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Accepted: 10/22/2019] [Indexed: 01/08/2023]
Abstract
Glasdegib is an inhibitor of the Hedgehog pathway recently approved in the United States for the treatment of acute myeloid leukemia. A population pharmacokinetic analysis was conducted to characterize the kinetic behavior of glasdegib and its sources of variability (covariates) by utilizing data from 269 patients with cancer treated with oral glasdegib doses ranging from 5 to 640 mg/d. Nonlinear mixed-effects modeling was conducted using NONMEM (v.7.3) and Perl-speaks NONMEM (v.4.2.0). The estimated apparent total clearance, apparent central volume of distribution, and apparent peripheral volume of distribution were 6.27 L/h, 3.32 L, and 279.2 L, respectively. Age, sex, race, and hepatic function were not significant covariates on glasdegib pharmacokinetic parameters. Baseline body weight, percentage bone marrow blasts, creatinine clearance, and use of moderate or strong cytochrome P450 3A inhibitors were statistically significant covariates on apparent total clearance; however, the magnitude of the effects was not considered clinically meaningful.
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Affiliation(s)
- Swan Lin
- Clinical PharmacologyGlobal Product DevelopmentPfizer IncSan DiegoCaliforniaUSA
| | - Naveed Shaik
- Clinical PharmacologyGlobal Product DevelopmentPfizer IncSan DiegoCaliforniaUSA
| | - Giovanni Martinelli
- Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST IRCCS)MeldolaItaly
| | | | - Jorge Cortes
- University of Texas MD Anderson Cancer CenterHoustonTexasUSA
| | - Ana Ruiz‐Garcia
- Clinical PharmacologyGlobal Product DevelopmentPfizer IncSan DiegoCaliforniaUSA
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