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Dong WC, Song MY, Zheng TL, Zhang ZQ, Jiang Y, Guo JL, Zhang YZ. Development of an hollow fiber solid phase microextraction method for the analysis of unbound fraction of imatinib and N-desmethyl imatinib in human plasma. J Pharm Biomed Anal 2024; 250:116405. [PMID: 39151298 DOI: 10.1016/j.jpba.2024.116405] [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: 06/24/2024] [Revised: 08/04/2024] [Accepted: 08/07/2024] [Indexed: 08/19/2024]
Abstract
Therapeutic drug monitoring (TDM) of imatinib (IM) in cancer therapy offers the potential to improve treatment efficacy while minimizing toxicity. There was a significant correlation between unbound concentration and clinical response and toxicity, compared with total plasma concentrations, and the quantification of unbound IM and its metabolite, N-desmethyl imatinib (NDI) are of interest for TDM. However, traditional unbound drug separation methods have shortcomings, especially are susceptible to non-specific binding (NSB) of drugs to the polymer-constructed components of filter membranes, which are difficult to avoid at present. Hence it is necessary to developed a reliable separation method for the analysis of the unbound fraction of IM and NDI in TDM. We developed and validated an hollow fiber solid phase microextraction (HF-SPME) method coupled with high-performance liquid chromatography tandem mass spectrometry (HPLC-MS/MS) that to measure unbound IM and NDI concentration in human plasma. It used the NSB phenomenon and solve the NSB problem. The preparation procedure only involves a common vortex and ultrasonication without dilution of samples and modification of membrane. A total of 50 chronic myeloid leukemia (CML) patients were enrolled in our study. The relationship between the unbound and total concentrations for IM and NDI, as well as the concentration ratios of NDI to IM in 50 clinical plasma samples were investigated. The extraction recovery is high to 95.5-106 % with validation parameters for the methodological results were all excellent. There were both a poor linear relationship between the unbound and total concentrations for IM (r2=0.504) and NDI (r2=0.201) in 50 clinical plasma samples. The unbound concentration ratios of NDI to IM varied widely in CML patients. The determination of unbound IM and NDI concentration is meaningful and necessary. The developed HF-SPME method is simple, accurate and precise that could be used to measure unbound IM and NDI concentration in clinical TDM.
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Affiliation(s)
- Wei-Chong Dong
- The School of Medicine, Nankai University, Tianjin 300071, China; Department of Pharmacy, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei Province 050051, China
| | - Mei-Yu Song
- School of Pharmacy, Hebei Medical University, Shijiazhuang, Hebei Province 050017, China
| | - Tian-Lun Zheng
- Department of Pharmacy, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei Province 050051, China
| | - Zhi-Qing Zhang
- Department of Pharmacy, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei Province 050051, China
| | - Ye Jiang
- School of Pharmacy, Hebei Medical University, Shijiazhuang, Hebei Province 050017, China; Hebei Key Laboratory of Forensic Medicine, Shijiazhuang, Hebei Province 050017, China.
| | - Jia-Liang Guo
- Department of Orthopaedics, Hebei Medical University Third Hospital, Shijiazhuang, Hebei Province 050000, China.
| | - Ying-Ze Zhang
- The School of Medicine, Nankai University, Tianjin 300071, China; Department of Orthopaedics, Hebei Medical University Third Hospital, Shijiazhuang, Hebei Province 050000, China.
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Géraud A, Combarel D, Funck-Brentano C, Beaulieu Q, Zahr N, Broutin S, Spano JP, Massard C, Besse B, Gougis P. A Score to Predict the Clinical Usefulness of Therapeutic Drug Monitoring: Application to Oral Molecular Targeted Therapies in Cancer. Clin Pharmacol Ther 2024; 116:678-689. [PMID: 38389482 DOI: 10.1002/cpt.3193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Accepted: 01/22/2024] [Indexed: 02/24/2024]
Abstract
Therapeutic drug monitoring (TDM) involves measuring and interpreting drug concentrations in biological fluids to adjust drug dosages. In onco-hematology, TDM guidelines for oral molecular targeted therapies (oMTTs) are varied. This study evaluates a quantitative approach with a score to predict the clinical usefulness of TDM for oMTTs. We identified key parameters for an oMTT's suitability for TDM from standard TDM recommendations. We gathered oMTT pharmacological data, which covered exposure variability (considering pharmacokinetic (PK) impact of food and proton pump inhibitors), technical intricacy (PK linearity and active metabolites), efficacy (exposure-response relationship), and safety (maximum tolerated dose, and exposure-safety relationship). To assess the validity and the relevance of the score and define relevant thresholds, we evaluated molecules with prospective validation or strong recommendations for TDM, both in oncology and in other fields. By September 1, 2021, the US Food and Drug Administration (FDA) approved 67 oMTTs for onco-hematological indications. Scores ranged from 15 (acalabrutinib) to 80 (sunitinib) with an average of 48.3 and a standard deviation of 15.6. Top scorers included sunitinib, sorafenib, cabozantinib, nilotinib, and abemaciclib. Based on scores, drugs were categorized into low (< 40), intermediate (≥ 40 and < 60), and high (≥ 60) relevance for TDM. Notably, negative controls generally scored around or under 40, whereas positive controls had a high score across different indications. In this work, we propose a quantitative and reproducible score to compare the potential usefulness of TDM for oMTTs. Future guidelines should prioritize the TDM for molecules with the highest score.
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Affiliation(s)
- Arthur Géraud
- Department of Cancer Medicine, Gustave Roussy, Villejuif, France
- Early Drug Development Department (DITEP), Gustave Roussy, Villejuif, France
- Paris-Saclay University, Orsay, France
| | - David Combarel
- Pharmacology Department, Gustave Roussy, Villejuif, France
- Faculty of Pharmacy, Paris-Saclay University, Chatenay-Malabry, France
| | - Christian Funck-Brentano
- Department of Pharmacology and Clinical Investigation Center (CIC-1901), AP-HP.Sorbonne Université, Pitié-Salpêtrière Hospital, INSERM, CIC-1901 and UMR-S 1166, Sorbonne Université Médecine, Paris, France
| | - Quentin Beaulieu
- Department of Pharmacology and Clinical Investigation Center (CIC-1901), AP-HP.Sorbonne Université, Pitié-Salpêtrière Hospital, INSERM, CIC-1901 and UMR-S 1166, Sorbonne Université Médecine, Paris, France
| | - Noël Zahr
- Department of Pharmacology and Clinical Investigation Center (CIC-1901), AP-HP.Sorbonne Université, Pitié-Salpêtrière Hospital, INSERM, CIC-1901 and UMR-S 1166, Sorbonne Université Médecine, Paris, France
| | - Sophie Broutin
- Pharmacology Department, Gustave Roussy, Villejuif, France
| | - Jean-Philippe Spano
- Oncology Department, APHP-Sorbonne Université, Cancer Institute (IUC), Paris, France
- INSERM, UMRS 1136, Paris, France
| | - Christophe Massard
- Early Drug Development Department (DITEP), Gustave Roussy, Villejuif, France
- Centre Eugène Marquis, Rennes, France
| | - Benjamin Besse
- Department of Cancer Medicine, Gustave Roussy, Villejuif, France
- Paris-Saclay University, Orsay, France
| | - Paul Gougis
- Department of Pharmacology and Clinical Investigation Center (CIC-1901), AP-HP.Sorbonne Université, Pitié-Salpêtrière Hospital, INSERM, CIC-1901 and UMR-S 1166, Sorbonne Université Médecine, Paris, France
- Oncology Department, APHP-Sorbonne Université, Cancer Institute (IUC), Paris, France
- Residual Tumor & Response to Treatment Laboratory, RT2Lab, INSERM, U932 Immunity and Cancer, Curie Institute, Université Paris, Paris, France
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Baalbaki N, Duijvelaar E, Said MM, Schippers J, Bet PM, Twisk J, Fritchley S, Longo C, Mahmoud K, Maitland-van der Zee AH, Bogaard HJ, Swart EL, Aman J, Bartelink IH. Pharmacokinetics and pharmacodynamics of imatinib for optimal drug repurposing from cancer to COVID-19. Eur J Pharm Sci 2023; 184:106418. [PMID: 36870577 PMCID: PMC9979628 DOI: 10.1016/j.ejps.2023.106418] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 02/19/2023] [Accepted: 03/01/2023] [Indexed: 03/06/2023]
Abstract
INTRODUCTION In the randomized double-blind placebo-controlled CounterCOVID study, oral imatinib treatment conferred a positive clinical outcome and a signal for reduced mortality in COVID-19 patients. High concentrations of alpha-1 acid glycoprotein (AAG) were observed in these patients and were associated with increased total imatinib concentrations. AIMS This post-hoc study aimed to compare the difference in exposure following oral imatinib administration in COVID-19 patients to cancer patients and assess assocations between pharmacokinetic (PK) parameters and pharmacodynamic (PD) outcomes of imatinib in COVID-19 patients. We hypothesize that a relatively higher drug exposure of imatinib in severe COVID-19 patients leads to improved pharmacodynamic outcome parameters. METHODS 648 total concentration plasma samples obtained from 168 COVID-19 patients were compared to 475 samples of 105 cancer patients, using an AAG-binding model. Total trough concentration at steady state (Cttrough) and total average area under the concentration-time curve (AUCtave) were associated with ratio between partial oxygen pressure and fraction of inspired oxygen (P/F), WHO ordinal scale (WHO-score) and liberation of oxygen supplementation (O2lib). Linear regression, linear mixed effects models and time-to-event analysis were adjusted for possible confounders. RESULTS AUCtave and Cttrough were respectively 2.21-fold (95%CI 2.07-2.37) and 1.53-fold (95%CI 1.44-1.63) lower for cancer compared to COVID-19 patients. Cttrough, not AUCtave, associated significantly with P/F (β=-19,64; p-value=0.014) and O2lib (HR 0.78; p-value= 0.032), after adjusting for sex, age, neutrophil-lymphocyte ratio, dexamethasone concomitant treatment, AAG and baseline P/F-and WHO-score. Cttrough, but not AUCtave associated significantly with WHO-score. These results suggest an inverse relationship between PK-parameters, Cttrough and AUCtave, and PD outcomes. CONCLUSION COVID-19 patients exhibit higher total imatinib exposure compared to cancer patients, attributed to differences in plasma protein concentrations. Higher imatinib exposure in COVID-19 patients did not associate with improved clinical outcomes. Cttrough and AUCtave inversely associated with some PD-outcomes, which may be biased by disease course, variability in metabolic rate and protein binding. Therefore, additional PKPD analyses into unbound imatinib and its main metabolite may better explain exposure-response.
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Affiliation(s)
- Nadia Baalbaki
- Department of Pulmonary Medicine, Amsterdam UMC, location AMC, Amsterdam, the Netherlands; Amsterdam Institute for Infection and Immunity, Amsterdam, the Netherlands; Amsterdam Public Health, Amsterdam, the Netherlands.
| | - Erik Duijvelaar
- Department of Pulmonary Medicine, Amsterdam UMC, location VUmc, Amsterdam, the Netherlands; Amsterdam Cardiovascular Sciences, Amsterdam, the Netherlands
| | - Medhat M Said
- Department of Pharmacy and Clinical Pharmacology, Amsterdam UMC, location VUmc, Amsterdam, the Netherlands; Cancer Center Amsterdam, Amsterdam, the Netherlands
| | - Job Schippers
- Department of Pulmonary Medicine, Amsterdam UMC, location VUmc, Amsterdam, the Netherlands; Amsterdam Cardiovascular Sciences, Amsterdam, the Netherlands
| | - Pierre M Bet
- Amsterdam Public Health, Amsterdam, the Netherlands; Department of Pharmacy and Clinical Pharmacology, Amsterdam UMC, location VUmc, Amsterdam, the Netherlands; Amsterdam Neuroscience, Amsterdam, the Netherlands
| | - Jos Twisk
- Amsterdam Public Health, Amsterdam, the Netherlands; Department of Epidemiology and Data Science, Amsterdam UMC, location VUmc, Amsterdam, the Netherlands
| | | | - Cristina Longo
- Department of Pulmonary Medicine, Amsterdam UMC, location AMC, Amsterdam, the Netherlands
| | - Kazien Mahmoud
- Department of Pharmacy and Clinical Pharmacology, Amsterdam UMC, location VUmc, Amsterdam, the Netherlands
| | - Anke H Maitland-van der Zee
- Department of Pulmonary Medicine, Amsterdam UMC, location AMC, Amsterdam, the Netherlands; Amsterdam Institute for Infection and Immunity, Amsterdam, the Netherlands; Amsterdam Public Health, Amsterdam, the Netherlands
| | - Harm Jan Bogaard
- Department of Pulmonary Medicine, Amsterdam UMC, location VUmc, Amsterdam, the Netherlands; Amsterdam Cardiovascular Sciences, Amsterdam, the Netherlands
| | - Eleonora L Swart
- Amsterdam Institute for Infection and Immunity, Amsterdam, the Netherlands; Department of Pharmacy and Clinical Pharmacology, Amsterdam UMC, location VUmc, Amsterdam, the Netherlands; Cancer Center Amsterdam, Amsterdam, the Netherlands
| | - Jurjan Aman
- Department of Pulmonary Medicine, Amsterdam UMC, location VUmc, Amsterdam, the Netherlands; Amsterdam Cardiovascular Sciences, Amsterdam, the Netherlands
| | - Imke H Bartelink
- Department of Pharmacy and Clinical Pharmacology, Amsterdam UMC, location VUmc, Amsterdam, the Netherlands; Cancer Center Amsterdam, Amsterdam, the Netherlands.
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Kenmotsu H, Imamura CK, Kawamura T, Oyakawa T, Omori S, Nakashima K, Wakuda K, Ono A, Taira T, Naito T, Murakami H, Yamamoto N, Takahashi T, Tanigawara Y. Prospective evaluation of the relationship between response and exposure of total and unbound erlotinib in non-small cell lung cancer patients. Cancer Chemother Pharmacol 2022; 90:115-123. [PMID: 35821437 DOI: 10.1007/s00280-022-04452-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Accepted: 06/20/2022] [Indexed: 11/30/2022]
Abstract
PURPOSE To evaluate the relationship between treatment efficacy and exposure of total and unbound erlotinib in patients with non-small cell lung cancer (NSCLC) harboring epidermal growth factor receptor (EGFR)-activating mutations. PATIENTS AND METHODS EGFR-tyrosine kinase inhibitor naïve NSCLC patients were enrolled, and erlotinib was started at 150 mg/day. Total and unbound exposure of erlotinib were prospectively evaluated. RESULTS Of the 70 enrolled patients, 61 had EGFR-activating mutations (30 patients with exon 19 deletions, 31 patients with L858R). The median area under the concentration-time curve from 0 to 24 h (AUC0-24) of total and unbound erlotinib on day 1 was 37,004 ng·h/mL (range, 9683-63,257 ng·h/mL) and 2338 ng·h/mL (581-5904 ng·h/mL), respectively. The median progression-free survival (PFS) was 10.9 months, and PFS did not differ between each tertile of total and unbound AUC0-24 on day 1 in 59 patients with EGFR-activating mutations. The worst grade of skin toxicities was significantly correlated with total trough concentration at steady state (Ctrough,ss) at each visit for 3 months after the initiation of erlotinib treatment (P < 0.0001). Total and unbound Ctrough,ss on day 7-15 in 20 patients whose dose was reduced due to intolerable toxicities was significantly higher than those in 48 patients whose dose was unchanged for 3 months (P = 0.0046, 0.0008). CONCLUSION The lack of relationship between efficacy and exposure of total and unbound erlotinib demonstrates that the standard dose of 150 mg/day is sufficient for the treatment of NSCLC harboring EGFR-activating mutations, despite wide inter-individual variability in exposure and dose reduction. CLINICAL TRIALS REGISTRATION NUMBER UMIN000012862.
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Affiliation(s)
- Hirotsugu Kenmotsu
- Department of Clinical Pharmacokinetics and Pharmacodynamics, Keio University School of Medicine, Tokyo, Japan
- Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka, Japan
| | - Chiyo K Imamura
- Department of Clinical Pharmacokinetics and Pharmacodynamics, Keio University School of Medicine, Tokyo, Japan.
- Advanced Cancer Translational Research Institute, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8555, Japan.
| | - Takahisa Kawamura
- Department of Clinical Pharmacokinetics and Pharmacodynamics, Keio University School of Medicine, Tokyo, Japan
- Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka, Japan
| | - Takuya Oyakawa
- Division of Cardiology, Shizuoka Cancer Center, Shizuoka, Japan
| | - Shota Omori
- Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka, Japan
| | | | - Kazushige Wakuda
- Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka, Japan
| | - Akira Ono
- Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka, Japan
| | - Tetsuhiko Taira
- Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka, Japan
| | - Tateaki Naito
- Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka, Japan
| | - Haruyasu Murakami
- Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka, Japan
| | - Nobuyuki Yamamoto
- Third Department of Internal Medicine, Wakayama Medical University, Wakayama, Japan
| | | | - Yusuke Tanigawara
- Department of Clinical Pharmacokinetics and Pharmacodynamics, Keio University School of Medicine, Tokyo, Japan
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Adiwidjaja J, Adattini JA, Boddy AV, McLachlan AJ. Physiologically-Based Pharmacokinetic Modeling Approaches for Patients with SARS-CoV-2 Infection: A Case Study with Imatinib. J Clin Pharmacol 2022; 62:1285-1296. [PMID: 35460539 PMCID: PMC9088354 DOI: 10.1002/jcph.2065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Accepted: 04/16/2022] [Indexed: 12/15/2022]
Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2) infection, which causes coronavirus disease 2019 (COVID‐19), manifests as mild respiratory symptoms to severe respiratory failure and is associated with inflammation and other physiological changes. Of note, substantial increases in plasma concentrations of α1‐acid‐glycoprotein and interleukin‐6 have been observed among patients admitted to the hospital with advanced SARS‐CoV‐2 infection. A physiologically based pharmacokinetic (PBPK) approach is a useful tool to evaluate and predict disease‐related changes on drug pharmacokinetics. A PBPK model of imatinib has previously been developed and verified in healthy people and patients with cancer. In this study, the PBPK model of imatinib was successfully extrapolated to patients with SARS‐CoV‐2 infection by accounting for disease‐related changes in plasma α1‐acid‐glycoprotein concentrations and the potential drug interaction between imatinib and dexamethasone. The model demonstrated a good predictive performance in describing total and unbound imatinib concentrations in patients with SARS‐CoV‐2 infection. PBPK simulations highlight that an equivalent dose of imatinib may lead to substantially higher total drug concentrations in patients with SARS‐CoV‐2 infection compared to that in patients with cancer, while the unbound concentrations remain comparable between the 2 patient populations. This supports the notion that unbound trough concentration is a better exposure metric for dose adjustment of imatinib in patients with SARS‐CoV‐2 infection, compared to the corresponding total drug concentration. Potential strategies for refinement and generalization of the PBPK modeling approach in the patient population with SARS‐CoV‐2 are also provided in this article, which could be used to guide study design and inform dose adjustment in the future.
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Affiliation(s)
- Jeffry Adiwidjaja
- Sydney Pharmacy SchoolFaculty of Medicine and HealthThe University of SydneySydneyNew South WalesAustralia
- Division of Pharmacotherapy and Experimental TherapeuticsUNC Eshelman School of PharmacyUniversity of North Carolina at Chapel HillChapel HillNorth CarolinaUSA
| | - Josephine A. Adattini
- Sydney Pharmacy SchoolFaculty of Medicine and HealthThe University of SydneySydneyNew South WalesAustralia
| | - Alan V. Boddy
- UniSA Cancer Research Institute and UniSA Clinical & Health SciencesUniversity of South AustraliaAdelaideSouth AustraliaAustralia
| | - Andrew J. McLachlan
- Sydney Pharmacy SchoolFaculty of Medicine and HealthThe University of SydneySydneyNew South WalesAustralia
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Groenland SL, Verheijen RB, Joerger M, Mathijssen RHJ, Sparreboom A, Beijnen JH, Beumer JH, Steeghs N, Huitema ADR. Precision Dosing of Targeted Therapies Is Ready for Prime Time. Clin Cancer Res 2021; 27:6644-6652. [PMID: 34548319 PMCID: PMC8934568 DOI: 10.1158/1078-0432.ccr-20-4555] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 02/19/2021] [Accepted: 09/13/2021] [Indexed: 12/16/2022]
Abstract
Fixed dosing of oral targeted therapies is inadequate in the era of precision medicine. Personalized dosing, based on pharmacokinetic (PK) exposure, known as therapeutic drug monitoring (TDM), is rational and supported by increasing evidence. The purpose of this perspective is to discuss whether randomized studies are needed to confirm the clinical value of precision dosing in oncology. PK-based dose adjustments are routinely made for many drugs and are recommended by health authorities, for example, for patients with renal impairment or for drug-drug interaction management strategies. Personalized dosing simply extrapolates this paradigm from selected patient populations to each individual patient with suboptimal exposure, irrespective of the underlying cause. If it has been demonstrated that exposure is related to a relevant clinical outcome, such as efficacy or toxicity, and that exposure can be optimized by PK-guided dosing, it could be logically assumed that PK-guided dosing would result in better treatment outcomes without the need for randomized confirmatory trials. We propose a path forward to demonstrate the clinical relevance of individualized dosing of molecularly-targeted anticancer drugs.
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Affiliation(s)
- Stefanie L Groenland
- Department of Clinical Pharmacology, Division of Medical Oncology, The Netherlands Cancer Institute, Amsterdam, the Netherlands
| | - Remy B Verheijen
- Department of Pharmacy & Pharmacology, The Netherlands Cancer Institute, Amsterdam, the Netherlands
| | - Markus Joerger
- Department of Medical Oncology and Hematology, Cantonal Hospital, St. Gallen, Switzerland
| | - Ron H J Mathijssen
- Department of Medical Oncology, Erasmus MC Cancer Institute, Rotterdam, the Netherlands
| | - Alex Sparreboom
- Division of Pharmaceutics and Pharmacology, College of Pharmacy and Comprehensive Cancer Center, The Ohio State University, Columbus, Ohio
| | - Jos H Beijnen
- Department of Pharmacy & Pharmacology, The Netherlands Cancer Institute, Amsterdam, the Netherlands
- Department of Pharmaceutical Sciences, Utrecht University, Utrecht, the Netherlands
| | - Jan H Beumer
- Cancer Therapeutics Program, UPMC Hillman Cancer Center, Pittsburgh, Pennsylvania
| | - Neeltje Steeghs
- Department of Clinical Pharmacology, Division of Medical Oncology, The Netherlands Cancer Institute, Amsterdam, the Netherlands
| | - Alwin D R Huitema
- Department of Pharmacy & Pharmacology, The Netherlands Cancer Institute, Amsterdam, the Netherlands.
- Department of Clinical Pharmacy, Utrecht University Medical Center, Utrecht, the Netherlands
- Department of Pharmacology, Princess Máxima Center for Pediatric Oncology, Utrecht, the Netherlands
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7
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Labeur TA, Hofsink Q, Takkenberg RB, van Delden OM, Mathôt RAA, Schinner R, Malfertheiner P, Amthauer H, Schütte K, Basu B, Kuhl C, Mayerle J, Ricke J, Klümpen HJ. The value of sorafenib trough levels in patients with advanced hepatocellular carcinoma - a substudy of the SORAMIC trial. Acta Oncol 2020; 59:1028-1035. [PMID: 32366155 DOI: 10.1080/0284186x.2020.1759826] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Background: Sorafenib for advanced hepatocellular carcinoma (HCC) is dose adjusted by toxicity. Preliminary studies have suggested an association between plasma concentrations of sorafenib and its main metabolite (M2) and clinical outcomes. This study aimed to validate these findings and establish target values for sorafenib trough concentrations.Methods: Patients with advanced HCC were prospectively recruited within a multicenter phase II study (SORAMIC). Patients with blood samples available at trough level were included for this pharmacokinetic (PK) substudy. Trough plasma concentrations of sorafenib and its main metabolite (M2) were associated with sorafenib-related toxicity and overall survival (OS).Results: Seventy-four patients were included with a median OS of 19.7 months (95% CI 16.1-23.3). Patients received sorafenib for a median of 51 weeks (IQR 27-62) and blood samples were drawn after a median of 25 weeks (IQR 10-42). Patients had a median trough concentration of 3217 ng/ml (IQR 2166-4526) and 360 ng/ml (IQR 190-593) with coefficients of variation of 65% and 146% for sorafenib and M2, respectively. Patients who experienced severe sorafenib-related toxicity received a lower average daily dose (551 vs 730 mg/day, p = .003), but showed no significant differences in sorafenib (3298 vs 2915 ng/ml, p = .442) or M2 trough levels (428 vs 283 ng/ml, p = .159). Trough levels of sorafenib or M2 showed no significant association with OS.Conclusions: In patients with advanced HCC treated with sorafenib, the administered dose, trough levels of sorafenib or M2, and clinical outcomes were poorly correlated. Toxicity-adjusted dosing remains the standard for sorafenib treatment.
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Affiliation(s)
- Tim A. Labeur
- Department of Medical Oncology, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, The Netherlands
- Cancer Center Amsterdam, Amsterdam, The Netherlands
- Department of Gastroenterology and Hepatology, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, The Netherlands
- Department of Radiology and Nuclear Medicine, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, The Netherlands
| | - Quincy Hofsink
- Department of Medical Oncology, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, The Netherlands
- Cancer Center Amsterdam, Amsterdam, The Netherlands
| | - R. Bart Takkenberg
- Department of Gastroenterology and Hepatology, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, The Netherlands
| | - Otto M. van Delden
- Department of Radiology and Nuclear Medicine, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, The Netherlands
| | - Ron A. A. Mathôt
- Hospital Pharmacy, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, The Netherlands
| | - Regina Schinner
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | | | - Holger Amthauer
- Department of Nuclear Medicine, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Kerstin Schütte
- Department of Internal Medicine and Gastroenterology, Niels-Stensen-Kliniken, Marienhospital Osnabrück, Osnabrück, Germany
| | - Bristi Basu
- Department of Oncology, University of Cambridge, Cambridge, UK
| | - Christiane Kuhl
- Department of Diagnostic and Interventional Radiology, University Hospital RWTH Aachen, Aachen, Germany
| | - Julia Mayerle
- Department of Medicine II, University Hospital, LMU Munich, Munich, Germany
| | - Jens Ricke
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | - Heinz-Josef Klümpen
- Department of Medical Oncology, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, The Netherlands
- Cancer Center Amsterdam, Amsterdam, The Netherlands
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8
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Suzuki T, Sukawa Y, Imamura CK, Masuishi T, Satake H, Kumekawa Y, Funakoshi S, Kotaka M, Horie Y, Kawai S, Okuda H, Terazawa T, Kondoh C, Kato K, Yoshimura K, Ishikawa H, Hamamoto Y, Boku N, Takaishi H, Kanai T. A Phase II Study of Regorafenib With a Lower Starting Dose in Patients With Metastatic Colorectal Cancer: Exposure-Toxicity Analysis of Unbound Regorafenib and Its Active Metabolites (RESET Trial). Clin Colorectal Cancer 2019; 19:13-21.e3. [PMID: 31732439 DOI: 10.1016/j.clcc.2019.10.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Revised: 10/13/2019] [Accepted: 10/16/2019] [Indexed: 01/31/2023]
Abstract
BACKGROUND Regorafenib demonstrated survival benefits as salvage therapy for patients with metastatic colorectal cancer. However, severe toxicities frequently occurred early in the treatment with the standard dose (160 mg/day), resulting in a dose reduction or interruption. To improve the tolerability and maintain sufficient efficacy, we conducted a phase II study of regorafenib with a lower starting dose (120 mg/day). PATIENTS AND METHODS Regorafenib was initiated at 120 mg/day, and the dosage was increased to 160 mg/day on day 15 of the first cycle for patients who had met the dose escalation criteria. The primary endpoint was the disease control rate (DCR). The pharmacokinetics of the total and unbound regorafenib and its active metabolites (M2, M5) were assessed. RESULTS A total of 70 patients were enrolled from September 2016 to December 2017. Only 6 patients achieved dose escalation to 160 mg on day 15 as planned. For the 68 evaluable patients, the DCR was 32.4% (95% confidence interval, 21.5%-44.8%), which was less than the threshold (30%) of our statistical hypothesis. The serum concentrations of total regorafenib for patients whose dose was escalated to 160 mg/day were significantly lower than those of the patients whose dose was not escalated (median, 3978 vs. 7244 nM; P = .027). The serum unbound concentrations of the sum of regorafenib and the active metabolites correlated significantly with the maximum grade of regorafenib-related symptomatic adverse events in the first cycle (11,138 vs. 19,096 pM; P = .035). CONCLUSION Regorafenib with a low starting dose of 120 mg/day did not achieve the expected DCR. A relationship of unbound exposure with toxicity was found.
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Affiliation(s)
- Takeshi Suzuki
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Keio, Japan
| | - Yasutaka Sukawa
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Keio, Japan.
| | - Chiyo K Imamura
- Department of Clinical Pharmacokinetics and Pharmacodynamics, Keio University School of Medicine, Keio, Japan
| | - Toshiki Masuishi
- Department of Clinical Oncology, Aichi Cancer Center Hospital, Aichi, Japan
| | - Hironaga Satake
- Department of Medical Oncology, Kobe City Medical Center General Hospital, Kobe City, Japan
| | - Yosuke Kumekawa
- Department of Gastroenterology, Saitama Cancer Center, Saitama, Japan
| | - Shinsuke Funakoshi
- Division of Medical Oncology, Department of Internal Medicine, Tokyo Saiseikai Central Hospital, Tokyo, Japan
| | | | - Yoshiki Horie
- Department of Clinical Oncology, St. Marianna University School of Medicine, Kawasaki, Japan
| | - Sadayuki Kawai
- Division of Gastrointestinal Oncology, Shizuoka Cancer Center, Shizuoka, Japan
| | - Hiroyuki Okuda
- Department of Medical Oncology, Keiyukai Sapporo Hospital, Sapporo, Japan
| | | | - Chihiro Kondoh
- Department of Medical Oncology, Toranomon Hospital, Tokyo, Japan
| | - Ken Kato
- Division of Gastrointestinal Medical Oncology, National Cancer Center Hospital, Tokyo, Japan
| | - Kenichi Yoshimura
- Department of Biostatistics, Innovative Clinical Research Center, Kanazawa University, Kanazawa, Japan
| | - Hideki Ishikawa
- Department of Molecular-Targeting Cancer Prevention, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Yasuo Hamamoto
- Keio Cancer Center, Keio University School of Medicine, Keio, Japan
| | - Narikazu Boku
- Division of Gastrointestinal Medical Oncology, National Cancer Center Hospital, Tokyo, Japan
| | | | - Takanori Kanai
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Keio, Japan
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9
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Association of Hepatic Nuclear Factor 4 Alpha Gene Polymorphisms With Free Imatinib Plasma Levels and Adverse Reactions in Chinese Gastrointestinal Stromal Tumor Patients. Ther Drug Monit 2019; 41:582-590. [DOI: 10.1097/ftd.0000000000000642] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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10
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Etherington MS, DeMatteo RP. Tailored management of primary gastrointestinal stromal tumors. Cancer 2019; 125:2164-2171. [PMID: 30933313 PMCID: PMC6773539 DOI: 10.1002/cncr.32067] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 02/10/2019] [Accepted: 02/14/2019] [Indexed: 12/17/2022]
Abstract
Gastrointestinal stromal tumors (GISTs) are the most common human sarcoma and can form along the entire gastrointestinal tract. Over the last 20 years, considerable advances have been made in our understanding of the biology of GISTs. The advent of tyrosine kinase inhibitors has provided effective medical therapy for the first time. In fact, given that GIST typically is driven by either a KIT or PDGFRA gene mutation, it has become a paradigm of targeted molecular therapy. In addition, diagnostic and surgical techniques have been refined. Here, the critical aspects of primary GISTs and how they are now managed with an integrated approach are summarized. Treatment plans are developed based on specific pathologic and molecular features of the tumor. The authors outline the general principles of therapy and highlight some of the nuances. Particular focus is given to diagnosis, surgical considerations, and the use of preoperative and postoperative tyrosine kinase inhibitors.
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Affiliation(s)
- Mark S Etherington
- Department of Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Ronald P DeMatteo
- Department of Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
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11
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Blanc Mettral J, Faller N, Cruchon S, Sottas L, Buclin T, Schild L, Choong E, Nahimana A, Decosterd LA. Imatinib Uptake into Cells is Not Mediated by Organic Cation Transporters OCT1, OCT2, or OCT3, But is Influenced by Extracellular pH. Drug Metab Lett 2019; 13:102-110. [PMID: 30734690 DOI: 10.2174/1872312813666190207150207] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Revised: 01/23/2019] [Accepted: 02/10/2020] [Indexed: 06/09/2023]
Abstract
BACKGROUND Cancer cells undergo genetic and environmental changes that can alter cellular disposition of drugs, notably by alterations of transmembrane drug transporters expression. Whether the influx organic cation transporter 1 (OCT1) encoded by the gene SLC221A1 is implicated in the cellular uptake of imatinib is still controversial. Besides, imatinib ionization state may be modulated by the hypoxic acidic surrounding extracellular microenvironment. OBJECTIVE To determine the functional contribution of OCTs and extracellular pH on imatinib cellular disposition. METHODS We measured imatinib uptake in two different models of selective OCTs drug transporter expression (transfected Xenopus laevis oocytes and OCT-expressing HEK293 human cells), incubated at pH 7.4 and 6, using specific mass spectrometry analysis. RESULTS Imatinib cellular uptake occurred independently of OCT1- OCT2- or OCT3-mediated drug transport at pH 7.4. Uptake of the OCTs substrate tetraethylammonium in oocytes remained intact at pH 6, while the accumulation of imatinib in oocytes was 10-fold lower than at pH 7.4, irrespectively of OCTs expressions. In OCT1- and OCT2-HEK cells at pH 6, imatinib accumulation was reduced by 2- 3-fold regardless of OCTs expressions. Since 99.5% of imatinib at pH6 is under the cationic form, the reduced cellular accumulation of imatinib at such pH may be explained by the lower amount of uncharged imatinib remaining for passive diffusion across cellular membrane. CONCLUSION Imatinib is not a substrate of OCTs 1-3 while the environmental pH modulates cellular disposition of imatinib. The observation that a slightly acidic extracellular pH influences imatinib cellular accumulation is important, considering the low extracellular pH reported in the hematopoietic leukemia/ cancer cell microenvironment.
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Affiliation(s)
- Jaurès Blanc Mettral
- Laboratory of Clinical Pharmacology, Lausanne University Hospital, University of Lausanne, Lausanne, Switzerland
| | - Nicolas Faller
- Department of Pharmacology and Toxicology, Faculty of Biology and Medicine, Lausanne University Hospital, University of Lausanne, Lausanne, Switzerland
| | - Sandra Cruchon
- Laboratory of Clinical Pharmacology, Lausanne University Hospital, University of Lausanne, Lausanne, Switzerland
| | - Loïc Sottas
- Laboratory of Clinical Pharmacology, Lausanne University Hospital, University of Lausanne, Lausanne, Switzerland
| | - Thierry Buclin
- Service of Clinical Pharmacology, Department of Laboratories, Lausanne University Hospital, University of Lausanne, Lausanne, Switzerland
| | - Laurent Schild
- Department of Pharmacology and Toxicology, Faculty of Biology and Medicine, Lausanne University Hospital, University of Lausanne, Lausanne, Switzerland
| | - Eva Choong
- Laboratory of Clinical Pharmacology, Lausanne University Hospital, University of Lausanne, Lausanne, Switzerland
| | - Aimable Nahimana
- Research Laboratory of Haematology, Department of Medicine, Lausanne University Hospital, University of Lausanne, Lausanne, Switzerland
| | - Laurent A Decosterd
- Laboratory of Clinical Pharmacology, Lausanne University Hospital, University of Lausanne, Lausanne, Switzerland
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12
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Farag S, Verheijen RB, Martijn Kerst J, Cats A, Huitema ADR, Steeghs N. Imatinib Pharmacokinetics in a Large Observational Cohort of Gastrointestinal Stromal Tumour Patients. Clin Pharmacokinet 2017; 56:287-292. [PMID: 27435281 DOI: 10.1007/s40262-016-0439-7] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
BACKGROUND Low trough imatinib concentration (C min) values have been associated with poor clinical outcomes in gastrointestinal stromal tumour (GIST) patients. This study describes the pharmacokinetics of imatinib in a large cohort of GIST patients in routine clinical care. METHODS An observational study was performed in imatinib-treated GIST patients. Patient and tumour characteristics were derived from the Dutch GIST Registry and medical records. Imatinib concentrations were measured by liquid chromatography with tandem mass spectrometry. The analyses included the occurrence of a low imatinib C min (<1000 µg/L), the change in the C min over time and the correlation between exposure and response. RESULTS In total, 421 plasma samples were available from 108 GIST patients. Most patients (79.6 %) received an imatinib dose of 400 mg. The inter- and intrapatient variabilities in C min were 54 and 23 %, respectively. In the first steady-state sample, 44.4 % of patients presented with C min values <1000 µg/L; 32.4 % of patients had values <1000 µg/L in >75 % of their samples. Only 33.3 % of patients had C min values ≥1000 µg/L in all measured samples. No decrease in C min over time was found (P > 0.05). Fifty-seven (91.9 %) of 62 palliative-treated patients had a tumour response (median C min 1271 µg/L). Five palliative patients (8.1 %) did not respond (median C min 920 µg/L). Given the limited number of non-responders in this cohort, no statistically significant association with clinical benefit could be demonstrated. CONCLUSION In routine clinical care, one third of GIST patients are systematically underexposed with a fixed dose of imatinib. Prospective clinical studies are needed to investigate the value of C min-guided imatinib dosing in GIST patients.
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Affiliation(s)
- Sheima Farag
- Department of Medical Oncology and Clinical Pharmacology, Netherlands Cancer Institute-Antoni van Leeuwenhoek, Plesmanlaan 121, 1066 CX, Amsterdam, The Netherlands.
| | - Remy B Verheijen
- Department of Pharmacy and Pharmacology, Netherlands Cancer Institute-Antoni van Leeuwenhoek, Louwesweg 6, 1066 EC, Amsterdam, The Netherlands
| | - J Martijn Kerst
- Department of Medical Oncology and Clinical Pharmacology, Netherlands Cancer Institute-Antoni van Leeuwenhoek, Plesmanlaan 121, 1066 CX, Amsterdam, The Netherlands
| | - Annemiek Cats
- Department of Gastroenterology, Netherlands Cancer Institute-Antoni van Leeuwenhoek, Plesmanlaan 121, 1066 CX, Amsterdam, The Netherlands
| | - Alwin D R Huitema
- Department of Pharmacy and Pharmacology, Netherlands Cancer Institute-Antoni van Leeuwenhoek, Louwesweg 6, 1066 EC, Amsterdam, The Netherlands
| | - Neeltje Steeghs
- Department of Medical Oncology and Clinical Pharmacology, Netherlands Cancer Institute-Antoni van Leeuwenhoek, Plesmanlaan 121, 1066 CX, Amsterdam, The Netherlands
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13
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Dong Z, Gao J, Gong J, Li J, Li Y, Shen L, Li J. Clinical benefit of sunitinib in gastrointestinal stromal tumors with different exon 11 mutation genotypes. Future Oncol 2017; 13:2035-2043. [PMID: 28685593 DOI: 10.2217/fon-2017-0252] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Aim: To assess the efficacy of second-line sunitinib therapy in gastrointestinal stromal tumor patients with different exon 11 mutation genotypes. Patients & methods: Thirty eight of the 75 patients received imatinib (IM) dose escalation followed by sunitinib (IM escalation group), while 37 were switched to sunitinib directly after the failure of first-line IM treatment (sunitinib group). Progression-free survival and overall survival were compared. Results: The median progression-free survival in the sunitinib group was significantly longer than in the IM escalation group (14 vs 4 months; p < 0.001), so was in patients with exon 11 deletions (16 vs 3 months; p < 0.001). Conclusion: Patients who have an exon 11 deletion mutation are more likely to benefit from switching to sunitinib directly than from IM dose escalation.
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Affiliation(s)
- Zhi Dong
- Laboratory of Carcinogenesis & Translational Research for the Ministry of National Education, Department of GI Oncology, Peking University School of Oncology, Beijing Cancer Hospital & Institute, Beijing, 100142 China
| | - Jing Gao
- Laboratory of Carcinogenesis & Translational Research for the Ministry of National Education, Department of GI Oncology, Peking University School of Oncology, Beijing Cancer Hospital & Institute, Beijing, 100142 China
| | - Jifang Gong
- Laboratory of Carcinogenesis & Translational Research for the Ministry of National Education, Department of GI Oncology, Peking University School of Oncology, Beijing Cancer Hospital & Institute, Beijing, 100142 China
| | - Jie Li
- Laboratory of Carcinogenesis & Translational Research for the Ministry of National Education, Department of GI Oncology, Peking University School of Oncology, Beijing Cancer Hospital & Institute, Beijing, 100142 China
| | - Yanyan Li
- Laboratory of Carcinogenesis & Translational Research for the Ministry of National Education, Department of GI Oncology, Peking University School of Oncology, Beijing Cancer Hospital & Institute, Beijing, 100142 China
| | - Lin Shen
- Laboratory of Carcinogenesis & Translational Research for the Ministry of National Education, Department of GI Oncology, Peking University School of Oncology, Beijing Cancer Hospital & Institute, Beijing, 100142 China
| | - Jian Li
- Laboratory of Carcinogenesis & Translational Research for the Ministry of National Education, Department of GI Oncology, Peking University School of Oncology, Beijing Cancer Hospital & Institute, Beijing, 100142 China
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14
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Lucas CJ, Martin JH. Pharmacokinetic-Guided Dosing of New Oral Cancer Agents. J Clin Pharmacol 2017; 57 Suppl 10:S78-S98. [DOI: 10.1002/jcph.937] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Accepted: 04/10/2017] [Indexed: 12/12/2022]
Affiliation(s)
- Catherine J. Lucas
- Discipline of Clinical Pharmacology, School of Medicine and Public Health; University of Newcastle; New South Wales Australia
| | - Jennifer H. Martin
- Discipline of Clinical Pharmacology, School of Medicine and Public Health; University of Newcastle; New South Wales Australia
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Verheijen RB, Yu H, Schellens JHM, Beijnen JH, Steeghs N, Huitema ADR. Practical Recommendations for Therapeutic Drug Monitoring of Kinase Inhibitors in Oncology. Clin Pharmacol Ther 2017; 102:765-776. [PMID: 28699160 PMCID: PMC5656880 DOI: 10.1002/cpt.787] [Citation(s) in RCA: 204] [Impact Index Per Article: 29.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Revised: 06/27/2017] [Accepted: 06/29/2017] [Indexed: 01/16/2023]
Abstract
Despite the fact that pharmacokinetic exposure of kinase inhibitors (KIs) is highly variable and clear relationships exist between exposure and treatment outcomes, fixed dosing is still standard practice. This review aims to summarize the available clinical pharmacokinetic and pharmacodynamic data into practical guidelines for individualized dosing of KIs through therapeutic drug monitoring (TDM). Additionally, we provide an overview of prospective TDM trials and discuss the future steps needed for further implementation of TDM of KIs.
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Affiliation(s)
- Remy B Verheijen
- Department of Pharmacy & Pharmacology, The Netherlands Cancer Institute - Antoni van Leeuwenhoek, Amsterdam, The Netherlands
| | - Huixin Yu
- Department of Pharmacy & Pharmacology, The Netherlands Cancer Institute - Antoni van Leeuwenhoek, Amsterdam, The Netherlands
| | - Jan H M Schellens
- Department of Medical Oncology and Clinical Pharmacology, The Netherlands Cancer Institute - Antoni van Leeuwenhoek, Amsterdam, The Netherlands.,Department of Pharmaceutical Sciences, Utrecht University, Utrecht, The Netherlands
| | - Jos H Beijnen
- Department of Pharmacy & Pharmacology, The Netherlands Cancer Institute - Antoni van Leeuwenhoek, Amsterdam, The Netherlands.,Department of Pharmaceutical Sciences, Utrecht University, Utrecht, The Netherlands
| | - Neeltje Steeghs
- Department of Medical Oncology and Clinical Pharmacology, The Netherlands Cancer Institute - Antoni van Leeuwenhoek, Amsterdam, The Netherlands
| | - Alwin D R Huitema
- Department of Pharmacy & Pharmacology, The Netherlands Cancer Institute - Antoni van Leeuwenhoek, Amsterdam, The Netherlands.,Department of Clinical Pharmacy, Utrecht University Medical Center, Utrecht, The Netherlands
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16
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How ‘Optimal’ are Optimal Sampling Times for Tyrosine Kinase Inhibitors in Cancer? Practical Considerations. Clin Pharmacokinet 2016; 55:1171-1177. [DOI: 10.1007/s40262-016-0394-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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17
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Decosterd LA, Widmer N, Zaman K, Cardoso E, Buclin T, Csajka C. Therapeutic drug monitoring of targeted anticancer therapy. Biomark Med 2015; 9:887-93. [PMID: 26333311 DOI: 10.2217/bmm.15.78] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
New oral targeted anticancer therapies are revolutionizing cancer treatment by transforming previously deadly malignancies into chronically manageable conditions. Nevertheless, drug resistance, persistence of cancer stem cells, and adverse drug effects still limit their ability to stabilize or cure malignant diseases in the long term. Response to targeted anticancer therapy is influenced by tumor genetics and by variability in drug concentrations. However, despite a significant inter-patient pharmacokinetic variability, targeted anticancer drugs are essentially licensed at fixed doses. Their therapeutic use could however be optimized by individualization of their dosage, based on blood concentration measurements via the therapeutic drug monitoring (TDM). TDM can increase the probability of therapeutic responses to targeted anticancer therapies, and would help minimize the risk of major adverse reactions.
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Affiliation(s)
- Laurent A Decosterd
- Laboratory of Clinical Pharmacology, Service of Biomedicine, Lausanne University Hospital & University of Lausanne, Switzerland
| | - Nicolas Widmer
- Division of Clinical Pharmacology, Service of Biomedicine, Lausanne University Hospital & University of Lausanne, Switzerland.,Pharmacy of Eastern Vaud Hospitals, Vevey, Switzerland
| | - Khalil Zaman
- Service of Medical Oncology, Department of Oncology, Lausanne University Hospital & University of Lausanne, Switzerland
| | - Evelina Cardoso
- Division of Clinical Pharmacology, Service of Biomedicine, Lausanne University Hospital & University of Lausanne, Switzerland
| | - Thierry Buclin
- Division of Clinical Pharmacology, Service of Biomedicine, Lausanne University Hospital & University of Lausanne, Switzerland
| | - Chantal Csajka
- Division of Clinical Pharmacology, Service of Biomedicine, Lausanne University Hospital & University of Lausanne, Switzerland
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18
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19
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Widmer N, Bardin C, Chatelut E, Paci A, Beijnen J, Levêque D, Veal G, Astier A. Review of therapeutic drug monitoring of anticancer drugs part two – Targeted therapies. Eur J Cancer 2014; 50:2020-36. [DOI: 10.1016/j.ejca.2014.04.015] [Citation(s) in RCA: 217] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2014] [Accepted: 04/11/2014] [Indexed: 02/06/2023]
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20
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Yip D, Zalcberg J, Ackland S, Barbour AP, Desai J, Fox S, Kotasek D, McArthur G, Smithers BM. Controversies in the management of gastrointestinal stromal tumors. Asia Pac J Clin Oncol 2014; 10:216-27. [PMID: 24673914 DOI: 10.1111/ajco.12187] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/29/2014] [Indexed: 12/15/2022]
Abstract
Major advances in the medical treatment of gastrointestinal tumors (GISTs) have improved survival for both patients with advanced disease and those diagnosed with high-risk primary tumors. The Consensus approaches to best practice management of gastrointestinal stromal tumors, published in this journal in 2008, provided guidance for the management of GIST to both clinicians and regulatory authorities. Since then, clinical trials have demonstrated the benefit of adjuvant imatinib in high-risk patients, and mature data from advanced GIST studies suggest that a small but significant proportion of patients with advanced disease can achieve long-term benefit with ongoing imatinib treatment. Other evolving management strategies include the controversial use of palliative or debulking surgery to improve outcomes in advanced GIST and the development of promising new multikinase inhibitors, such as regorafenib, which has established benefit in the third-line setting. This review provides an update of recent developments in GIST management and discusses new controversies that these advances have generated.
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Affiliation(s)
- Desmond Yip
- Department of Medical Oncology, The Canberra Hospital, Canberra, Australian Capital Territory, Australia; ANU Medical School, Australian National University, Canberra, Australian Capital Territory, Australia
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21
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Practical Guidelines for Therapeutic Drug Monitoring of Anticancer Tyrosine Kinase Inhibitors: Focus on the Pharmacokinetic Targets. Clin Pharmacokinet 2014; 53:305-25. [DOI: 10.1007/s40262-014-0137-2] [Citation(s) in RCA: 137] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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22
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Is intra-patient sorafenib dose re-escalation safe and tolerable in patients with advanced hepatocellular carcinoma? Int J Clin Oncol 2014; 19:1029-36. [PMID: 24519322 DOI: 10.1007/s10147-014-0668-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2013] [Accepted: 01/17/2014] [Indexed: 02/05/2023]
Abstract
BACKGROUND Although sorafenib improves survival in patients with hepatocellular carcinoma (HCC), doses have to be reduced in quite a few patients because of adverse events. We investigated whether intra-patient sorafenib dose re-escalations were safe and tolerable in patients with advanced HCC. METHODS Of the 73 advanced HCC patients treated with sorafenib, 42 achieved a tolerable dose with a dose reduction. We evaluated safety and tolerability in patients who attempted intra-patient dose re-escalations from the reduced dose. RESULTS Thirteen of 42 patients increased the sorafenib dose from the reduced dose. Ten patients had a tolerable dose of 400 mg on alternate days, and 3 patients had a tolerable dose of 400 mg daily. Dose-limiting toxicity (DLT), defined as toxicity resulting in a dose reduction, was observed in 8 of 13 patients as a hand-foot skin reaction (HFSR), and DLT was noted in 2 of 13 patients as an increase in alanine aminotransferase/aspartate aminotransferase levels. Seven of 13 patients did not exhibit DLT after dose re-escalations. Although 6 patients exhibited DLT, the cause of the adverse event was HFSR in all cases. The median escalation dose ratio, which was calculated as the ratio of the real cumulative dose to the cumulative dose when continued at the tolerable dose after dose re-escalation, was 1.84. CONCLUSIONS The results of the present study indicated that intra-patient sorafenib dose re-escalations were safe and tolerable. Further prospective analyses are needed to determine in more detail the safety and efficacy of intra-patient sorafenib dose re-escalations.
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23
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Systematic Review of Population Pharmacokinetic Analyses of Imatinib and Relationships With Treatment Outcomes. Ther Drug Monit 2013; 35:150-67. [DOI: 10.1097/ftd.0b013e318284ef11] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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24
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Determination of unbound fraction of imatinib and N-desmethyl imatinib, validation of an UPLC–MS/MS assay and ultrafiltration method. J Chromatogr B Analyt Technol Biomed Life Sci 2012; 907:94-100. [DOI: 10.1016/j.jchromb.2012.09.007] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2012] [Revised: 08/31/2012] [Accepted: 09/02/2012] [Indexed: 11/20/2022]
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25
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Kee D, Zalcberg JR. Current and emerging strategies for the management of imatinib-refractory advanced gastrointestinal stromal tumors. Ther Adv Med Oncol 2012; 4:255-70. [PMID: 22942908 DOI: 10.1177/1758834012450935] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Since its approval by the US Food and Drug Administration in February 2002, the tyrosine kinase inhibitor, imatinib, has become the standard of care for patients with metastatic or unresectable KIT-positive gastrointestinal stromal tumors (GISTs). Imatinib functions by blocking the adenosine triphosphate binding site of the constitutively activated mutant KIT or platelet-derived growth factor receptor α, effectively shutting down the oncogenic signal that drives up to 90% of these tumors. In doing so, it has transformed the management of a condition previously refractory to systemic treatments and established GIST as a model for the use of targeted therapies and oncogene addiction in solid tumors. However, while more than 80% of patients will receive clinical benefit from imatinib monotherapy, more than half will develop progressive disease by 2 years. In this article we review the mechanism and patterns of imatinib resistance in GIST; attempt to offer a practical schema for managing imatinib-refractory patients; and lastly, offer some insight as to future directions and emerging therapeutics for the management of this highly interesting and challenging disease.
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Affiliation(s)
- Damien Kee
- Department of Cancer Medicine, Peter MacCallum Cancer Centre, St Andrews Place, East Melbourne, VIC 3002 and Department of Pathology, University of Melbourne, Parkville, VIC, Australia
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26
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Patel S. Managing progressive disease in patients with GIST: Factors to consider besides acquired secondary tyrosine kinase inhibitor resistance. Cancer Treat Rev 2012; 38:467-72. [DOI: 10.1016/j.ctrv.2011.10.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2011] [Revised: 09/29/2011] [Accepted: 10/03/2011] [Indexed: 10/15/2022]
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Sprowl JA, Mikkelsen TS, Giovinazzo H, Sparreboom A. Contribution of tumoral and host solute carriers to clinical drug response. Drug Resist Updat 2012; 15:5-20. [PMID: 22459901 DOI: 10.1016/j.drup.2012.01.009] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Members of the solute carrier family of transporters are responsible for the cellular uptake of a broad range of endogenous compounds and xenobiotics in multiple tissues. Several of these solute carriers are known to be expressed in cancer cells or cancer cell lines, and decreased cellular uptake of drugs potentially contributes to the development of resistance. As result, the expression levels of these proteins in humans have important consequences for an individual's susceptibility to certain drug-induced side effects, interactions, and treatment efficacy. In this review article, we provide an update of this rapidly emerging field, with specific emphasis on the direct contribution of solute carriers to anticancer drug uptake in tumors, the role of these carriers in regulation of anticancer drug disposition, and recent advances in attempts to evaluate these proteins as therapeutic targets.
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Affiliation(s)
- Jason A Sprowl
- Department of Pharmaceutical Sciences, St Jude Children's Research Hospital, Memphis, TN 38105, USA
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Gotta V, Widmer N, Montemurro M, Leyvraz S, Haouala A, Decosterd LA, Csajka C, Buclin T. Therapeutic Drug Monitoring of Imatinib. Clin Pharmacokinet 2012; 51:187-201. [DOI: 10.2165/11596990-000000000-00000] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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30
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Sorafenib exposure decreases over time in patients with hepatocellular carcinoma. Invest New Drugs 2011; 30:2046-9. [PMID: 22038662 DOI: 10.1007/s10637-011-9764-8] [Citation(s) in RCA: 84] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2011] [Accepted: 10/18/2011] [Indexed: 10/15/2022]
Abstract
BACKGROUND Intra-patient variability in sorafenib pharmacokinetics has been poorly investigated to date. We hypothesized that sorafenib clearance could decrease over time, as seen with imatinib. PATIENTS AND METHODS Sorafenib plasma concentrations were determined by liquid chromatography, every 2 weeks, in consecutive hepatocellular carcinoma patients treated with sorafenib. Sorafenib dose-normalized area under the concentration-time curve (AUC) was determined from a population pharmacokinetics model, and its kinetics was analyzed in order to identify possible alterations of exposure over time. RESULTS Fifteen hepatocellular carcinoma patients with Child-Pugh A cirrhosis, in whom sorafenib dosing remained unchanged from initiation of treatment to disease progression, were eligible for this analysis. Sorafenib AUC significantly decreased over time: the median AUC during the third month of treatment was lower than that observed after one month of treatment (43.0 vs. 60.3 mg/L.h, p = 0.008). Most importantly, median sorafenib AUC at the time of progression was almost two-fold lower than that observed after one month of therapy (33.2 vs. 60.3 mg/L.h, p = 0.007). These findings suggest an induction of expression of efflux transporters in the gut wall, or an induction of sorafenib metabolism. CONCLUSIONS In patients with progressive disease in whom exposure markedly decreased from baseline, sorafenib dose escalation could be considered, aiming to restore an adequate drug exposure and possibly anti-tumor activity.
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Eechoute K, Franke RM, Loos WJ, Scherkenbach LA, Boere I, Verweij J, Gurney H, Kim RB, Tirona RG, Mathijssen RHJ, Sparreboom A. Environmental and genetic factors affecting transport of imatinib by OATP1A2. Clin Pharmacol Ther 2011; 89:816-20. [PMID: 21508937 DOI: 10.1038/clpt.2011.42] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The bioavailability of orally administered imatinib is >90%, although the drug is monocationic under the acidic conditions in the duodenum. In vitro, we found that imatinib is transported by the intestinal uptake carrier organic anion transporting polypeptide (OATP1A2) and that this process is sensitive to pH, rosuvastatin, and genetic variants. However, in a study in patients with cancer, imatinib absorption was not associated with OATP1A2 variants and was unaffected by rosuvastatin. These findings highlight the importance of verifying in a clinical setting the drug-transporter interactions observed in in vitro tests.
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Affiliation(s)
- K Eechoute
- Department of Medical Oncology, Daniel den Hoed Cancer Center, Erasmus University Medical Center, Rotterdam, The Netherlands
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Abstract
For a select number of drugs, proper management of patients includes monitoring serum or plasma concentrations of the drugs and adjusting the doses accordingly - this practice is referred to as therapeutic drug monitoring (TDM). The need for TDM arises when pharmacokinetic variability of drugs is not easily accounted for by common clinical parameters. Many chemotherapeutic drugs have large interindividual variability, yet TDM is not commonplace in chemotherapy management. This review will discuss pharmacokinetics in the context of chemotherapeutic drugs, examine the few instances where TDM is currently used in the field of oncology and propose other drugs where TDM might be useful for dose adjustments in the management of chemotherapy.
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Eechoute K, Sparreboom A, Burger H, Franke RM, Schiavon G, Verweij J, Loos WJ, Wiemer EA, Mathijssen RH. Drug Transporters and Imatinib Treatment: Implications for Clinical Practice. Clin Cancer Res 2010; 17:406-15. [DOI: 10.1158/1078-0432.ccr-10-2250] [Citation(s) in RCA: 120] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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von Mehren M, Widmer N. Correlations between imatinib pharmacokinetics, pharmacodynamics, adherence, and clinical response in advanced metastatic gastrointestinal stromal tumor (GIST): an emerging role for drug blood level testing? Cancer Treat Rev 2010; 37:291-9. [PMID: 21078547 DOI: 10.1016/j.ctrv.2010.10.001] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2010] [Revised: 10/19/2010] [Accepted: 10/24/2010] [Indexed: 01/02/2023]
Abstract
Imatinib is the standard of care for patients with advanced metastatic gastrointestinal stromal tumors (GIST), and is also approved for adjuvant treatment in patients at substantial risk of relapse. Studies have shown that maximizing benefit from imatinib depends on long-term administration at recommended doses. Pharmacokinetic (PK) and pharmacodynamic factors, adherence, and drug-drug interactions can affect exposure to imatinib and impact clinical outcomes. This article reviews the relevance of these factors to imatinib's clinical activity and response in the context of what has been demonstrated in chronic myelogenous leukemia (CML), and in light of new data correlating imatinib exposure to response in patients with GIST. Because of the wide inter-patient variability in drug exposure with imatinib in both CML and GIST, blood level testing (BLT) may play a role in investigating instances of suboptimal response, unusually severe toxicities, drug-drug interactions, and suspected non-adherence. Published clinical data in CML and in GIST were considered, including data from a PK substudy of the B2222 trial correlating imatinib blood levels with clinical responses in patients with GIST. Imatinib trough plasma levels < 1100 ng/mL were associated with lower rates of objective response and faster development of progressive disease in patients with GIST. These findings have been supported by other analyses correlating free imatinib (unbound) levels with response. These results suggest a future application for imatinib BLT in predicting and optimizing therapeutic response. Nevertheless, early estimates of threshold imatinib blood levels must be confirmed prospectively in future studies and elaborated for different patient subgroups.
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Affiliation(s)
- Margaret von Mehren
- Department of Medical Oncology, Fox Chase Cancer Center, Philadelphia, PA 19111, USA.
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