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van der Kleij MBA, Guchelaar NAD, Meertens M, Westerdijk K, Giraud EL, Bleckman RF, Groenland SL, van Eerden RAG, Imholz ALT, Vulink AJE, Otten HM, Fiebrich-Westra HB, Lubberman FJE, Desar IME, Moes DJAR, Touw DJ, Koolen SLW, Gelderblom H, Reyners AKL, van Erp NP, Mathijssen RHJ, Huitema ADR, Steeghs N. Reasons for non-feasibility of therapeutic drug monitoring of oral targeted therapies in oncology - an analysis of the closed cohorts of a multicentre prospective study. Br J Cancer 2024:10.1038/s41416-024-02789-2. [PMID: 38971952 DOI: 10.1038/s41416-024-02789-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2024] [Revised: 06/25/2024] [Accepted: 07/01/2024] [Indexed: 07/08/2024] Open
Abstract
BACKGROUND Therapeutic drug monitoring (TDM) - performing dose adjustments based on measured drug levels and established pharmacokinetic (PK) targets - could optimise treatment with drugs that show large interpatient variability in exposure. We evaluated the feasibility of TDM for multiple oral targeted therapies. Here we report on drugs for which routine TDM is not feasible. METHODS We evaluated drug cohorts from the Dutch Pharmacology Oncology Group - TDM study. Based on PK levels taken at pre-specified time points, PK-guided interventions were performed. Feasibility of TDM was evaluated, and based on the success and practicability of TDM, cohorts could be closed. RESULTS For 10 out of 24 cohorts TDM was not feasible and inclusion was closed. A high incidence of adverse events resulted in closing the cabozantinib, dabrafenib/trametinib, everolimus, regorafenib and vismodegib cohort. The enzalutamide and erlotinib cohorts were closed because almost all PK levels were above target. Other, non-pharmacological reasons led to closing the palbociclib, olaparib and tamoxifen cohort. CONCLUSIONS Although TDM could help personalising treatment for many drugs, the above-mentioned reasons can influence its feasibility, usefulness and clinical applicability. Therefore, routine TDM is not advised for cabozantinib, dabrafenib/trametinib, enzalutamide, erlotinib, everolimus, regorafenib and vismodegib. Nonetheless, TDM remains valuable for individual clinical decisions.
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Affiliation(s)
- Maud B A van der Kleij
- Department of Clinical Pharmacology, Division of Medical Oncology, The Netherlands Cancer Institute, Antoni van Leeuwenhoek, Amsterdam, The Netherlands.
- Department of Medical Oncology, Erasmus MC Cancer Institute, Rotterdam, The Netherlands.
| | - Niels A D Guchelaar
- Department of Medical Oncology, Erasmus MC Cancer Institute, Rotterdam, The Netherlands
| | - Marinda Meertens
- Department of Pharmacy & Pharmacology, The Netherlands Cancer Institute, Antoni van Leeuwenhoek, Amsterdam, The Netherlands
| | - Kim Westerdijk
- Department of Medical Oncology, Research Institute for Medical Innovation, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - Eline L Giraud
- Department of Pharmacy and Clinical Pharmacology, Research Institute for Medical Innovation, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - Roos F Bleckman
- Department of Medical Oncology, University Medical Centre Groningen, University of Groningen, Groningen, The Netherlands
| | - Stefanie L Groenland
- Department of Clinical Pharmacology, Division of Medical Oncology, The Netherlands Cancer Institute, Antoni van Leeuwenhoek, Amsterdam, The Netherlands
| | - Ruben A G van Eerden
- Department of Medical Oncology, Erasmus MC Cancer Institute, Rotterdam, The Netherlands
| | - Alex L T Imholz
- Department of Medical Oncology, Deventer Hospital, Deventer, The Netherlands
| | - Annelie J E Vulink
- Department of Medical Oncology, Reinier de Graaf Hospital, Delft, The Netherlands
| | - Hans-Martin Otten
- Department of Medical Oncology, Meander Medical Centre, Amersfoort, The Netherlands
| | | | | | - Ingrid M E Desar
- Department of Medical Oncology, Research Institute for Medical Innovation, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - Dirk-Jan A R Moes
- Department of Clinical Pharmacy & Toxicology, Leiden University Medical Centre, Leiden, The Netherlands
| | - Daan J Touw
- Department of Clinical Pharmacy and Pharmacology, University Medical Centre Groningen, University of Groningen, Groningen, The Netherlands
| | - Stijn L W Koolen
- Department of Medical Oncology, Erasmus MC Cancer Institute, Rotterdam, The Netherlands
- Department of Pharmacy, Erasmus University Medical Centre, Rotterdam, The Netherlands
| | - Hans Gelderblom
- Department of Medical Oncology, Leiden University Medical Centre, Leiden, The Netherlands
| | - An K L Reyners
- Department of Medical Oncology, University Medical Centre Groningen, University of Groningen, Groningen, The Netherlands
| | - Nielka P van Erp
- Department of Pharmacy and Clinical Pharmacology, Research Institute for Medical Innovation, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - Ron H J Mathijssen
- Department of Medical Oncology, Erasmus MC Cancer Institute, Rotterdam, 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 Centre, Utrecht, The Netherlands
- Department of Pharmacology, Princess Máxima Centre for Paediatric Oncology, Utrecht, The Netherlands
| | - Neeltje Steeghs
- Department of Clinical Pharmacology, Division of Medical Oncology, The Netherlands Cancer Institute, Antoni van Leeuwenhoek, Amsterdam, The Netherlands
- Department of Medical Oncology, Utrecht University Medical Centre, Utrecht University, Utrecht, The Netherlands
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Liu M, Guo T, Ma Z, Du L, Hou J, Tian Y, Meng M, Chen X. Correlation Between N-Demethyl Imatinib Trough Concentration and Serious Adverse Reactions in Patients with Gastrointestinal Stromal Tumors: A Retrospective Cohort Study. Ther Drug Monit 2024; 46:344-350. [PMID: 38176855 DOI: 10.1097/ftd.0000000000001160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Accepted: 06/04/2023] [Indexed: 01/06/2024]
Abstract
BACKGROUND Imatinib is the first-line treatment for gastrointestinal stromal tumors; however, the clinical prognosis and adverse reactions of patients vary owing to individualized discrepancies in plasma exposure. METHODS To determine the safe interval for steady-state plasma trough concentrations (C min ) of imatinib and its active metabolite, N-demethyl imatinib (NDI), 328 plasma samples from 273 patients treated with imatinib were retrospectively analyzed. Imatinib C min and NDI C min were tested, and adverse reactions were recorded. The association between imatinib C min , NDI C min , and serious adverse reactions was evaluated. RESULTS The C min range of imatinib was 209.5-4950.0 ng/mL, with the mean value and SD of 1491.8 ± 731.4 ng/mL. The C min range of NDI was 80.0-2390.0 ng/mL with the mean value and SD of 610.8 ± 281.5 ng/mL. NDI C min was positively correlated with imatinib C min , whereas the ratio of NDI C min to imatinib C min (NDI C min /imatinib C min ) was negatively correlated with imatinib C min . Univariate logistic regression analysis demonstrated that the treatment objective, daily dose, imatinib C min , NDI C min , and imatinib C min + NDI C min were significantly associated with serious adverse reactions. Multivariate logistic regression analysis showed that NDI C min was an independent risk factor for serious adverse reactions, with a threshold of 665 ng/mL. CONCLUSIONS NDI C min was an independent risk factor for serious adverse reactions, with a threshold of 665 ng/mL. Monitoring NDI C min was beneficial for the rational application of imatinib and individualized treatment of patients with gastrointestinal stromal tumors.
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Affiliation(s)
- Mingfeng Liu
- Department of Pharmacy, the Fourth Hospital of Hebei Medical University, Hebei Key Laboratory of Clinical Pharmacy, Shijiazhuang City, Hebei Province, China; and
| | - Teng Guo
- Department of Pharmacy, the Fourth Hospital of Hebei Medical University, Hebei Key Laboratory of Clinical Pharmacy, Shijiazhuang City, Hebei Province, China; and
| | - Zhixue Ma
- Third Department of Surgery, the Fourth Hospital of Hebei Medical University, Shijiazhuang City, Hebei Province, China
| | - Liying Du
- Department of Pharmacy, the Fourth Hospital of Hebei Medical University, Hebei Key Laboratory of Clinical Pharmacy, Shijiazhuang City, Hebei Province, China; and
| | - Juan Hou
- Department of Pharmacy, the Fourth Hospital of Hebei Medical University, Hebei Key Laboratory of Clinical Pharmacy, Shijiazhuang City, Hebei Province, China; and
| | - Yuan Tian
- Third Department of Surgery, the Fourth Hospital of Hebei Medical University, Shijiazhuang City, Hebei Province, China
| | - Meng Meng
- Department of Pharmacy, the Fourth Hospital of Hebei Medical University, Hebei Key Laboratory of Clinical Pharmacy, Shijiazhuang City, Hebei Province, China; and
| | - Xinran Chen
- Department of Pharmacy, the Fourth Hospital of Hebei Medical University, Hebei Key Laboratory of Clinical Pharmacy, Shijiazhuang City, Hebei Province, China; and
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Ran P, Tan T, Li J, Yang H, Li J, Zhang J. Advanced gastrointestinal stromal tumor: reliable classification of imatinib plasma trough concentration via machine learning. BMC Cancer 2024; 24:264. [PMID: 38402382 PMCID: PMC10894477 DOI: 10.1186/s12885-024-11930-6] [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: 09/26/2023] [Accepted: 01/29/2024] [Indexed: 02/26/2024] Open
Abstract
AIM Patients with advanced gastrointestinal stromal tumors (GISTs) exhibiting an imatinib plasma trough concentration (IM Cmin) under 1100 ng/ml may show a reduced drug response rate, leading to the suggestion of monitoring for IM Cmin. Consequently, the objective of this research was to create a customized IM Cmin classification model for patients with advanced GISTs from China. METHODS Initial data and laboratory indicators from patients with advanced GISTs were gathered, and the above information was segmented into a training set, validation set, and testing set in a 6:2:2 ratio. Key variables associated with IM Cmin were identified to construct the classification model using the least absolute shrinkage and selection operator (LASSO) regression and forward stepwise binary logistic regression. Within the training and validation sets, nine ML classification models were constructed via the resampling method and underwent comparison through the Brier scores, the areas under the receiver-operating characteristic curve (AUROC), the decision curve, and the precision-recall (AUPR) curve to determine the most suitable model for this dataset. Two methods of internal validation were used to assess the most suitable model's classification performance: tenfold cross-validation and random split-sample validation (test set), and the value of the test set AUROC was used to evaluate the model's classification performance. RESULTS Six key variables (gender, daily IM dose, metastatic site, red blood cell count, platelet count, and percentage of neutrophils) were ultimately selected to construct the classification model. In the validation set, it is found by comparison that the Extreme Gradient Boosting (XGBoost) model has the largest AUROC, the lowest Brier score, the largest area under the decision curve, and the largest AUPR value. Furthermore, as evaluated via internal verification, it also performed well in the test set (AUROC = 0.725). CONCLUSION For patients with advanced GISTs who receive IM, initial data and laboratory indicators could be used to accurately estimate whether the IM Cmin is below 1100 ng/ml. The XGBoost model may stand a chance to assist clinicians in directing the administration of IM.
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Affiliation(s)
- Pan Ran
- Department of Gastrointestinal Surgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Tao Tan
- Department of Gastrointestinal Surgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Jinjin Li
- Department of Gastrointestinal Surgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Hao Yang
- Department of Internal Medicine, Chongqing Key Laboratory of Translational Research for Cancer Metastasis and Individualized Treatment, Chongqing University Cancer Hospital, Chongqing, 400030, China
| | - Juan Li
- Department of Pharmacy, the First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China.
| | - Jun Zhang
- Department of Gastrointestinal Surgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China.
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Bleckman RF, Broekman KE, Roets E, Mohammadi M, Desar IME, Gelderblom H, Mathijssen RHJ, Steeghs N, de Graeff P, Reyners AKL. Individualized Dosing Patterns in the Treatment of Older Patients with Gastrointestinal Stromal Tumors: Results of a Registry-Based Observational National Cohort Study Including 871 Patients. Drugs Aging 2024; 41:165-176. [PMID: 38123766 DOI: 10.1007/s40266-023-01084-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/21/2023] [Indexed: 12/23/2023]
Abstract
BACKGROUND While the effectiveness of tyrosine kinase inhibitors (TKIs) seems similar in older patients with gastrointestinal stromal tumors (GIST) compared with younger patients, toxicities in older patients treated with TKIs more often lead to discontinuation of treatment. OBJECTIVE To better understand the age-related pharmacology and pharmacodynamic differences in patients with GIST treated with TKIs, the primary aim of this study was to evaluate TKI dosing patterns in older patients with GIST, while the secondary aims were to evaluate differences in imatinib trough plasma concentrations between age groups and to compare the overall survival (OS) in patients with and without dose reductions in all treatment lines in a palliative setting. METHODS Patients (18 years of age or older) with histologically proven GIST diagnosed between January 2009 and June 2021 and treated with one or more lines of TKIs were selected from the Dutch GIST Registry (DGR) database. Age groups were divided into younger patients (age <70 years) and older patients (age ≥70 years). All imatinib trough plasma concentrations of blood withdrawals taken from initiation of imatinib until a maximum of 1 year of treatment with imatinib were collected. Reasons for first adjustment of treatment were classified as adverse event, dose modification, progressive disease and other reasons. The next treatment steps after first adjustment of treatment were defined as dose escalation, dose reduction, dose interruption, or end of treatment. The association of dose reduction and OS was analyzed using the landmark approach. RESULTS Overall, 871 patients were included in this study, including 577 younger patients and 294 older patients. Older patients more often had an adverse event as the reason for first adjustment of treatment with both imatinib (45.6%; p < 0.001) and sunitinib (58.6%; p = 0.224) compared with younger patients (19.5% and 42.7%, respectively). Adjustment of imatinib and sunitinib after starting on a standard dose because of an adverse event most often resulted in dose reduction in both age groups. Median trough plasma concentrations of all samples taken within the first year after initiation of imatinib were higher in older patients (1228 ng/mL, interquartile range [IQR] 959-1687) compared with younger patients (1035 ng/mL [IQR 773-1377]; p < 0.001). No significant differences were seen between OS in patients with or without dose reduction in all treatment lines (imatinib: p = 0.270; sunitinib: p = 0.547; and regorafenib: p = 0.784). CONCLUSION Older patients showed higher imatinib trough plasma concentrations compared with younger patients and also had earlier and more often adverse events as the reason for first adjustment of treatment with imatinib followed by dose reduction. However, in a landmark analysis, patients with imatinib dose reductions had no poorer outcomes compared with patients not requiring a dose reduction.
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Affiliation(s)
- Roos F Bleckman
- University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.
- Department of Medical Oncology, University Medical Center Groningen, Hanzeplein 1, 9713 GZ, Groningen, The Netherlands.
| | - K Esther Broekman
- University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
- Department of Medical Oncology, University Medical Center Groningen, Hanzeplein 1, 9713 GZ, Groningen, The Netherlands
| | - Evelyne Roets
- The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | | | | | | | | | - Neeltje Steeghs
- The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Pauline de Graeff
- University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
- Department of Medical Oncology, University Medical Center Groningen, Hanzeplein 1, 9713 GZ, Groningen, The Netherlands
| | - Anna K L Reyners
- University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
- Department of Medical Oncology, University Medical Center Groningen, Hanzeplein 1, 9713 GZ, Groningen, The Netherlands
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5
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Giraud EL, Te Brake LMH, van den Hombergh ECA, Desar IME, Kweekel DM, van Erp NP. Results of the first international quality control programme for oral targeted oncolytics. Br J Clin Pharmacol 2024; 90:336-343. [PMID: 37776845 DOI: 10.1111/bcp.15918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 09/20/2023] [Accepted: 09/22/2023] [Indexed: 10/02/2023] Open
Abstract
AIMS With the rising number of oral targeted oncolytics and growing awareness of the benefits of therapeutic drug monitoring (TDM) within the field of oncology, it is expected that the requests for quantifying concentrations of these drugs will increase. It is important to (cross-)validate available assays and ensure its quality, as results may lead to altered dosing recommendations. Therefore, we aimed to evaluate the performance of laboratories measuring concentrations of targeted oral oncolytics in a one-time international quality control (QC) programme. METHODS Participating laboratories received a set of plasma samples containing low, medium and high concentrations of imatinib, sunitinib, desethylsunitinib, pazopanib, cabozantinib, olaparib, enzalutamide, desmethylenzalutamide and abiraterone, with the request to report their results back within five weeks after shipment. Accuracy was defined acceptable if measurements where within 85%-115% from the weighed-in reference concentrations. Besides descriptive statistics, an exploratory ANOVA was performed. RESULTS Seventeen laboratories from six countries reported 243 results. Overall, 80.7% of all measurements were within the predefined range of acceptable accuracy. Laboratories performed best in quantifying imatinib and poorest in quantifying desethylsunitinib (median absolute inaccuracy respectively 4.0% (interquartile range (IQR) 1.8%-6.5%) and 15.5% (IQR 8.8%-34.9%)). The poorest performance of desethylsunitinib might be caused by using the stable-isotope-labelled sunitinib instead of desethylsunitinib as an internal standard, or due to the light-induced cis(Z)/trans(E) isomerization of (desethyl)sunitinib. Overall, drug substance and performing laboratory seemed to influence the absolute inaccuracy (F = 16.4; p < 0.001 and F = 35.5; p < 0.001, respectively). CONCLUSION Considering this is the first evaluation of an international QC programme for oral targeted oncolytics, an impressive high percentage of measurements were within the predefined range of accuracy. Cross-validation of assays that are used for dose optimization of oncolytics will secure the performance and will protect patients from incorrect advices.
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Affiliation(s)
- Eline L Giraud
- Department of Pharmacy, Research Institute for Medical Innovation, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - Lindsey M H Te Brake
- Department of Pharmacy, Research Institute for Medical Innovation, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - Erik C A van den Hombergh
- Department of Pharmacy, Research Institute for Medical Innovation, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - Ingrid M E Desar
- Department of Medical Oncology, Research Institute for Medical Innovation, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - Dina M Kweekel
- Department of Clinical Pharmacy and Toxicology, Leiden University Medical Centre, Leiden, The Netherlands
- Drug Analysis and Toxicology division (KKGT) of the Dutch Foundation for Quality Assessment in Medical Laboratories (SKML), Utrecht, The Netherlands
| | - Nielka P van Erp
- Department of Pharmacy, Research Institute for Medical Innovation, Radboud University Medical Centre, Nijmegen, The Netherlands
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Gagno S, Fratte CD, Posocco B, Buonadonna A, Fumagalli A, Guardascione M, Toffoli G, Cecchin E. Therapeutic drug monitoring and pharmacogenetics to tune imatinib exposure in gastrointestinal stromal tumor patients: hurdles and perspectives for clinical implementation. Pharmacogenomics 2023; 24:895-900. [PMID: 37955064 DOI: 10.2217/pgs-2023-0198] [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] [Indexed: 11/14/2023] Open
Abstract
Tweetable abstract Present evidence supports the use of intensified pharmacologic monitoring of #imatinib including #TherapeuticDrugMonitoring and #PGx to improve outcomes in patients with GI stromal tumor. Future studies need to address emerging questions to facilitate implementation in clinics.
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Affiliation(s)
- Sara Gagno
- Experimental and Clinical Pharmacology Unit, Centro di Riferimento Oncologico di Aviano (CRO), IRCCS-Aviano, Aviano, 33081, Italy
| | - Chiara Dalle Fratte
- Experimental and Clinical Pharmacology Unit, Centro di Riferimento Oncologico di Aviano (CRO), IRCCS-Aviano, Aviano, 33081, Italy
| | - Bianca Posocco
- Experimental and Clinical Pharmacology Unit, Centro di Riferimento Oncologico di Aviano (CRO), IRCCS-Aviano, Aviano, 33081, Italy
| | - Angela Buonadonna
- Department of Medical Oncology, Centro di Riferimento Oncologico di Aviano (CRO), IRCCS-Aviano, Aviano, 33081, Italy
| | - Arianna Fumagalli
- Department of Medical Oncology, Centro di Riferimento Oncologico di Aviano (CRO), IRCCS-Aviano, Aviano, 33081, Italy
| | - Michela Guardascione
- Department of Medical Oncology, Centro di Riferimento Oncologico di Aviano (CRO), IRCCS-Aviano, Aviano, 33081, Italy
| | - Giuseppe Toffoli
- Experimental and Clinical Pharmacology Unit, Centro di Riferimento Oncologico di Aviano (CRO), IRCCS-Aviano, Aviano, 33081, Italy
| | - Erika Cecchin
- Experimental and Clinical Pharmacology Unit, Centro di Riferimento Oncologico di Aviano (CRO), IRCCS-Aviano, Aviano, 33081, Italy
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van der Kleij MBA, Guchelaar NAD, Mathijssen RHJ, Versluis J, Huitema ADR, Koolen SLW, Steeghs N. Therapeutic Drug Monitoring of Kinase Inhibitors in Oncology. Clin Pharmacokinet 2023; 62:1333-1364. [PMID: 37584840 PMCID: PMC10519871 DOI: 10.1007/s40262-023-01293-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/24/2023] [Indexed: 08/17/2023]
Abstract
Although kinase inhibitors (KI) frequently portray large interpatient variability, a 'one size fits all' regimen is still often used. In the meantime, relationships between exposure-response and exposure-toxicity have been established for several KIs, so this regimen could lead to unnecessary toxicity and suboptimal efficacy. Dose adjustments based on measured systemic pharmacokinetic levels-i.e., therapeutic drug monitoring (TDM)-could therefore improve treatment efficacy and reduce the incidence of toxicities. Therefore, the aim of this comprehensive review is to give an overview of the available evidence for TDM for the 77 FDA/EMA kinase inhibitors currently approved (as of July 1st, 2023) used in hematology and oncology. We elaborate on exposure-response and exposure-toxicity relationships for these kinase inhibitors and provide practical recommendations for TDM and discuss corresponding pharmacokinetic targets when possible.
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Affiliation(s)
- Maud B A van der Kleij
- Division of Medical Oncology, Department of Clinical Pharmacology, The Netherlands Cancer Institute, Antoni van Leeuwenhoek, Amsterdam, The Netherlands.
- Department of Medical Oncology, Erasmus MC Cancer Institute, Rotterdam, The Netherlands.
| | - Niels A D Guchelaar
- Department of Medical Oncology, Erasmus MC Cancer Institute, Rotterdam, The Netherlands
| | - Ron H J Mathijssen
- Department of Medical Oncology, Erasmus MC Cancer Institute, Rotterdam, The Netherlands
| | - Jurjen Versluis
- Department of Hematology, Erasmus MC Cancer Institute, Rotterdam, The Netherlands
| | - Alwin D R Huitema
- Department of Pharmacy and Pharmacology, The Netherlands Cancer Institute, Antoni van Leeuwenhoek, Amsterdam, The Netherlands
- Department of Clinical Pharmacy, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
- Department of Pharmacology, Princess Máxima Center for Pediatric Oncology, Utrecht, The Netherlands
| | - Stijn L W Koolen
- Department of Medical Oncology, Erasmus MC Cancer Institute, Rotterdam, The Netherlands
- Department of Pharmacy, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Neeltje Steeghs
- Division of Medical Oncology, Department of Clinical Pharmacology, The Netherlands Cancer Institute, Antoni van Leeuwenhoek, Amsterdam, The Netherlands
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Wang S, Wang Y, Luo J, Wang H, Zhao Y, Nie Y, Yang J. Development and validation of a prognostic nomogram for gastrointestinal stromal tumors in the postimatinib era: A study based on the SEER database and a Chinese cohort. Cancer Med 2023; 12:15970-15982. [PMID: 37329178 PMCID: PMC10469741 DOI: 10.1002/cam4.6240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 05/27/2023] [Accepted: 06/02/2023] [Indexed: 06/18/2023] Open
Abstract
BACKGROUND After the standardization, recording and follow-up of imatinib use that significantly prolongs survival of gastrointestinal stromal tumors (GISTs), a comprehensive reassessment of the prognosis of GISTs is necessary and more conductive to treatment options. METHODS A total of 2185 GISTs between 2013 and 2016 were obtained from the Surveillance, Epidemiology, and End Results database and comprised our training (n = 1456) and internal validation cohorts (n = 729). The risk factors extracted from univariate and multivariate analyses were used to establish a predictive nomogram. The model was evaluated and tested in the validation cohort internally and in 159 patients with GIST diagnosed between January 2015 and June 2017 in Xijing Hospital externally. RESULTS The median OS was 49 months (range, 0-83 months) in the training cohort and 51 months (0-83 months) in the validation cohort. The concordance index (C-index) of the nomogram was 0.777 (95% CI, 0.752-0.802) and 0.7787 (0.7785, bootstrap corrected) in training and internal validation cohorts, respectively, and 0.7613 (0.7579, bootstrap corrected) in the external validation cohort. Receiver operating characteristic curves and calibration curves for 1-, 3-, and 5-year overall survival (OS) showed a high degree of discrimination and calibration. The area under the curve showed that the new model performed better than the TNM staging system. In addition, the model could be dynamically visualized on a webpage. CONCLUSION We developed a comprehensive survival prediction model for assessing the 1-, 3- and 5-year OS of patients with GIST in the postimatinib era. This predictive model outperforms the traditional TNM staging system and sheds light on the improvement of the prognostic prediction and the selection of treatment strategies for GISTs.
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Affiliation(s)
- Shu Wang
- Department of Digestive SurgeryXi Jing Hospital, The Fourth Military Medical UniversityXi'anChina
| | - Yuhao Wang
- Department of Digestive SurgeryXi Jing Hospital, The Fourth Military Medical UniversityXi'anChina
| | - Jialin Luo
- Department of Digestive SurgeryXi Jing Hospital, The Fourth Military Medical UniversityXi'anChina
| | - Haoyuan Wang
- Department of Digestive SurgeryXi Jing Hospital, The Fourth Military Medical UniversityXi'anChina
| | - Yan Zhao
- Department of Digestive SurgeryXi Jing Hospital, The Fourth Military Medical UniversityXi'anChina
| | - Yongzhan Nie
- State Key Laboratory of Cancer Biology, National Clinical Research Center for Digestive Diseases and Xijing Hospital of Digestive DiseasesThe Fourth Military Medical UniversityXi'anChina
| | - Jianjun Yang
- Department of Digestive SurgeryXi Jing Hospital, The Fourth Military Medical UniversityXi'anChina
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Giraud EL, de Jong LAW, van den Hombergh E, Kaal SEJ, van Erp NP, Desar IME. Measuring Tumour Imatinib Concentrations in Gastrointestinal Stromal Tumours: Relevant or Redundant? Cancers (Basel) 2023; 15:cancers15112875. [PMID: 37296838 DOI: 10.3390/cancers15112875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 05/17/2023] [Accepted: 05/20/2023] [Indexed: 06/12/2023] Open
Abstract
Imatinib plasma trough concentrations are associated with efficacy for patients treated for advanced or metastatic KIT-positive gastrointestinal stromal tumours (GISTs). This relationship has not been studied for patients treated in the neoadjuvant setting, let alone its correlation with tumour drug concentrations. In this exploratory study we aimed to determine the correlation between plasma and tumour imatinib concentrations in the neoadjuvant setting, investigate tumour imatinib distribution patterns within GISTs, and analyse its correlation with pathological response. Imatinib concentrations were measured in both plasma and in three regions of the resected primary tumour: the core, middle part, and periphery. Twenty-four tumour samples derived from the primary tumours of eight patients were included in the analyses. Imatinib tumour concentrations were higher compared to plasma concentrations. No correlation was observed between plasma and tumour concentrations. Interpatient variability in tumour concentrations was high compared to interindividual variability in plasma concentrations. Although imatinib accumulates in tumour tissue, no distribution pattern of imatinib in tumour tissue could be identified. There was no correlation between imatinib concentrations in tumour tissue and pathological treatment response.
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Affiliation(s)
- Eline L Giraud
- Radboud University Medical Centre, Department of Pharmacy, 6500 HB Nijmegen, The Netherlands
| | - Loek A W de Jong
- Radboud University Medical Centre, Department of Pharmacy, 6500 HB Nijmegen, The Netherlands
| | - Erik van den Hombergh
- Radboud University Medical Centre, Department of Pharmacy, 6500 HB Nijmegen, The Netherlands
| | - Suzanne E J Kaal
- Radboud University Medical Centre, Department of Medical Oncology, 6500 HB Nijmegen, The Netherlands
| | - Nielka P van Erp
- Radboud University Medical Centre, Department of Pharmacy, 6500 HB Nijmegen, The Netherlands
| | - Ingrid M E Desar
- Radboud University Medical Centre, Department of Medical Oncology, 6500 HB Nijmegen, The Netherlands
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10
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Gao D, Wang G, Wu H, Wu J, Zhao X. Prediction for Plasma Trough Concentration and Optimal Dosing of Imatinib under Multiple Clinical Situations Using Physiologically Based Pharmacokinetic Modeling. ACS OMEGA 2023; 8:13741-13753. [PMID: 37091368 PMCID: PMC10116519 DOI: 10.1021/acsomega.2c07967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Accepted: 03/23/2023] [Indexed: 05/03/2023]
Abstract
(1) Purpose: This study aimed to develop a physiologically based pharmacokinetic (PBPK) model to predict the trough concentration (C trough) of imatinib (IMA) at steady state in patients and to explore the role of free concentration (f up), α1-acid glycoprotein (AGP) level, and organic cation transporter 1 (OCT1) activity/expression in clinical efficacy. (2) Methods: The population PBPK model was built using physicochemical and biochemical properties, metabolizing and transporting kinetics, tissue distribution, and human physiological parameters. (3) Results: The PBPK model successfully predicted the C trough of IMA administered alone in chronic phase (CP) and accelerated phase (AP) patients, the C trough of IMA co-administered with six modulators, and C trough in CP patients with hepatic impairment. Most of the ratios between predicted and observed data are within 0.70-1.30. Additionally, the recommendations for dosing adjustments for IMA have been given under multiple clinical uses. The sensitivity analysis showed that exploring the f up and AGP level had a significant influence on the plasma C trough of IMA. Meanwhile, the simulations also revealed that OCT1 activity and expression had a significant impact on the intracellular C trough of IMA. (4) Conclusion: The current PBPK model can accurately predict the IMA C trough and provide appropriate dosing adjustment recommendations in a variety of clinical situations.
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Affiliation(s)
- Dongmei Gao
- Department
of Medical Oncology, Bethune International
Peace Hospital, Shijiazhuang 050082, China
| | - Guopeng Wang
- Zhongcai
Health (Beijing) Biological Technology Development Co., Ltd., Beijing 101500, China
| | - Honghai Wu
- Department
of Clinical Pharmacy, Bethune International
Peace Hospital, Shijiazhuang 050082, China
| | - JinHua Wu
- Sichuan
Cancer Hospital & Institute, Sichuan Cancer Center, School of
Medicine, University of Electronic Science
and Technology of China, Chengdu 610041, China
- . Phone: +86
15928616219
| | - Xiaoang Zhao
- Institute
of Chinese Material Medica China Academy of Chinese Medical Sciences, Beijing 100700, China
- . Phone: +86 13811372687
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11
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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: 1] [Impact Index Per Article: 1.0] [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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12
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IJzerman NS, van Werkhoven E, Mohammadi M, Hollander DD, Bleckman RF, Reyners AKL, Desar IME, Gelderblom H, Grünhagen DJ, Mathijssen RHJ, Steeghs N, van der Graaf WTA. Sex differences in patients with gastrointestinal stromal tumours: do they exist and does it affect survival? ESMO Open 2022; 7:100649. [PMID: 36493601 PMCID: PMC9808455 DOI: 10.1016/j.esmoop.2022.100649] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 09/20/2022] [Accepted: 10/25/2022] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Sex differences in cancer have gained attention in recent years. The role of sex as a prognostic factor in gastrointestinal stromal tumours (GIST) has not been well established. The aim of this research was to elucidate potential sex differences in GIST patients and the influence of sex on disease-specific survival (DSS). METHODS A review of the literature was carried out to obtain an overview of all literature with sex as a covariate on GIST survival analyses. Furthermore, in the Dutch GIST Registry, GIST characteristics between males and females were compared and the influence of sex on DSS was analysed. RESULTS A total of 118 articles from the review of the literature met our selection criteria; 58% of the articles found no sex difference in survival and 42% did find a sex difference. All differences favoured female patients, although there was substantial overlap of individual patients in the various reported groups. The Dutch GIST Registry cohort consisted of 1425 patients (46% female). Compared with female patients, male patients had larger tumours (mean 9.0 cm versus 7.9 cm) and higher mitotic rates (34.4% versus 28.0% >5 mitoses/5 mm2). GIST in males was more often metastasized at diagnosis (21.3% versus 13.7%) and incurable (38.5% versus 31.0%). Male patients less often received surgery of the primary tumour (71.7% versus 78.9%), but did experience more tumour ruptures (18.2% versus 13.3%). Male patients had a worse DSS than females. This was not statistically significant when corrected for differences in GIST characteristics. CONCLUSIONS In case of sex differences in GIST in the literature, male patients have a worse outcome. In our Dutch GIST cohort a similar finding was made, but sex was shown not to be an independent factor. Male patients more often had aggressive GISTs, with larger tumours, higher mitotic rates, more tumour ruptures, and metastases, which could explain the sex differences in DSS.
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Affiliation(s)
- N S IJzerman
- Department of Medical Oncology, The Netherlands Cancer Institute, Amsterdam, the Netherlands; Department of Medical Oncology, Erasmus MC Cancer Institute, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - E van Werkhoven
- Department of Hematology, Erasmus MC Cancer Institute, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - M Mohammadi
- Department of Medical Oncology, Leiden University Medical Center, Leiden, the Netherlands
| | - D den Hollander
- Department of Medical Oncology, The Netherlands Cancer Institute, Amsterdam, the Netherlands; Department of Medical Oncology, Radboud University Medical Center, Nijmegen, the Netherlands
| | - R F Bleckman
- Department of Medical Oncology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - A K L Reyners
- Department of Medical Oncology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - I M E Desar
- Department of Medical Oncology, Radboud University Medical Center, Nijmegen, the Netherlands
| | - H Gelderblom
- Department of Medical Oncology, Leiden University Medical Center, Leiden, the Netherlands
| | - D J Grünhagen
- Department of Surgical Oncology, Erasmus MC Cancer Institute, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - R H J Mathijssen
- Department of Medical Oncology, Erasmus MC Cancer Institute, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - N Steeghs
- Department of Medical Oncology, The Netherlands Cancer Institute, Amsterdam, the Netherlands
| | - W T A van der Graaf
- Department of Medical Oncology, The Netherlands Cancer Institute, Amsterdam, the Netherlands; Department of Medical Oncology, Erasmus MC Cancer Institute, Erasmus University Medical Center, Rotterdam, the Netherlands.
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13
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Dutch Gastrointestinal Stromal Tumor (GIST) Registry Data Comparing Sunitinib with Imatinib Dose Escalation in Second-Line Advanced Non-KIT Exon 9 Mutated GIST Patients. Target Oncol 2022; 17:627-634. [PMID: 36374447 PMCID: PMC9684294 DOI: 10.1007/s11523-022-00926-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/18/2022] [Indexed: 11/16/2022]
Abstract
Background The prognosis of patients with advanced gastrointestinal stromal tumor (GIST) has improved greatly after the introduction of imatinib. However, primary or secondary resistance to imatinib occurs in the majority of patients. Sunitinib is the standard second line treatment in exon-9 mutated GIST. Objective We compared the clinical outcomes of sunitinib with imatinib dose escalation in patients with progressive advanced non-KIT exon 9 mutated GIST after failure of first line imatinib. Patients and Methods A retrospective study was performed, retrieving data from a real-life database (Dutch GIST Registry) including patients with GIST treated with sunitinib or imatinib dose escalation after failure on first line imatinib 400 mg daily. Primary outcome measures were progression free survival (PFS) and overall survival (OS). Results In total, 110 patients were included, 72 (65.5%) patients were treated with sunitinib (group A) and 38 (34.5%) received an imatinib dose escalation (group B). Important prognostic features at baseline, such as tumor size, stage at diagnosis, mitotic count and localization were equally distributed in both groups. No significant difference (p = 0.88) between median PFS in group A [8.7 months (95% CI 5.6–11.3)] and group B [5.6 months, (95% CI 2.6–8.7)] was observed. Moreover, the OS was similar between group A and group B; 63.2 months and 63.4 months, respectively. Conclusion This study represents a proper sample size cohort containing detailed data on mutational status of patients with advanced GIST. We illustrated that imatinib dose escalation could serve as a good alternative for sunitinib as second-line treatment in patients with a non-KIT exon 9 mutation.
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14
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Groenland SL, van Eerden RAG, Westerdijk K, Meertens M, Koolen SLW, Moes DJAR, de Vries N, Rosing H, Otten H, Vulink AJE, Desar IME, Imholz ALT, Gelderblom H, van Erp NP, Beijnen JH, Mathijssen RHJ, Huitema ADR, Steeghs N. Therapeutic drug monitoring-based precision dosing of oral targeted therapies in oncology: a prospective multicenter study. Ann Oncol 2022; 33:1071-1082. [PMID: 35777707 DOI: 10.1016/j.annonc.2022.06.010] [Citation(s) in RCA: 40] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 04/08/2022] [Accepted: 06/20/2022] [Indexed: 01/02/2023] Open
Abstract
BACKGROUND Oral targeted therapies show a high pharmacokinetic (PK) interpatient variability. Even though exposure has been positively correlated with efficacy for many of these drugs, these are still dosed using a one-size-fits-all approach. Consequently, individuals have a high probability to be either underexposed or overexposed, potentially leading to suboptimal outcomes. Therapeutic drug monitoring, which is personalized dosing based on measured systemic drug concentrations, could address these problems. PATIENTS AND METHODS Patients were enrolled in this prospective multicenter study (www.trialregister.nl; NL6695) if they started treatment with one of the 24 participating oral targeted therapies. Primary outcome was to halve the proportion of underexposed patients, compared with historical data. PK sampling was carried out after 4, 8 and 12 weeks, and every 12 weeks thereafter. In case of Cmin below the predefined target and manageable toxicity, a pharmacokinetically guided intervention was proposed (i.e. checking compliance and drug-drug interactions, concomitant intake with food, splitting intake moments or dose increments). RESULTS In total, 600 patients were included of whom 426 patients are assessable for the primary outcome and 552 patients had ≥1 PK sample(s) available and were therefore assessable for the overall analyses. Pharmacokinetically guided dosing reduced the proportion of underexposed patients at the third PK measurement by 39.0% (95% confidence interval 28.0% to 49.0%) compared with historical data. At the third PK measurement, 110 out of 426 patients (25.8%) had a low exposure. In total, 294 patients (53.3%) had ≥1 PK sample(s) below the preset target at a certain time point during treatment. In 166 of these patients (56.5%), pharmacokinetically guided interventions were carried out, which were successful in 113 out of 152 assessable patients (74.3%). CONCLUSIONS Pharmacokinetically guided dose optimization of oral targeted therapies was feasible in clinical practice and reduced the proportion of underexposed patients considerably.
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Affiliation(s)
- S L Groenland
- Department of Clinical Pharmacology, Division of Medical Oncology, The Netherlands Cancer Institute, Amsterdam, The Netherlands.
| | - R A G van Eerden
- Department of Medical Oncology, Erasmus MC Cancer Institute, Rotterdam, The Netherlands
| | - K Westerdijk
- Department of Medical Oncology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - M Meertens
- Department of Pharmacy & Pharmacology, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - S L W Koolen
- Department of Medical Oncology, Erasmus MC Cancer Institute, Rotterdam, The Netherlands; Department of Pharmacy, Erasmus Medical Center, Rotterdam, The Netherlands
| | - D J A R Moes
- Department of Clinical Pharmacy & Toxicology, Leiden University Medical Center, Leiden, The Netherlands
| | - N de Vries
- Department of Pharmacy & Pharmacology, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - H Rosing
- Department of Pharmacy & Pharmacology, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - H Otten
- Department of Medical Oncology, Meander Medical Center, Amersfoort, The Netherlands
| | - A J E Vulink
- Department of Medical Oncology, Reinier de Graaf Hospital, Delft, The Netherlands
| | - I M E Desar
- Department of Medical Oncology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - A L T Imholz
- Department of Medical Oncology, Deventer Hospital, Deventer, The Netherlands
| | - H Gelderblom
- Department of Medical Oncology, Leiden University Medical Center, Leiden, The Netherlands
| | - N P van Erp
- Department of Pharmacy, Radboud Institute for Health Sciences, Radboud University Medical Center, Nijmegen, The Netherlands
| | - J H Beijnen
- Department of Pharmacy & Pharmacology, The Netherlands Cancer Institute, Amsterdam, The Netherlands; Department of Pharmaceutical Sciences, Utrecht University, Utrecht, The Netherlands
| | - R H J Mathijssen
- Department of Medical Oncology, Erasmus MC Cancer Institute, Rotterdam, The Netherlands
| | - A D R Huitema
- Department of Pharmacy & Pharmacology, The Netherlands Cancer Institute, Amsterdam, The Netherlands; Department of Clinical Pharmacy, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands; Department of Pharmacology, Princess Máxima Center for Pediatric Oncology, Utrecht, The Netherlands
| | - N Steeghs
- Department of Clinical Pharmacology, Division of Medical Oncology, The Netherlands Cancer Institute, Amsterdam, The Netherlands.
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15
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van Leeuwen R, le Comte M, Reyners A, van den Tweel A, van Vlijmen B, Kwee W, Wensveen B, Steeghs N, Visser O, van Gelder T, Jansman F. Evidence- and consensus-based guidelines for drug-drug interactions with anticancer drugs; A practical and universal tool for management. Semin Oncol 2022; 49:119-129. [DOI: 10.1053/j.seminoncol.2022.03.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 03/11/2022] [Accepted: 03/11/2022] [Indexed: 01/23/2023]
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16
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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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17
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Li G, Zhao M, Zhao L. Development and validation of an UPLC-MS/MS method for simultaneous determination of fifteen targeted anti-cancer drugs in human plasma and its application in therapeutic drug monitoring. J Pharm Biomed Anal 2021; 212:114517. [DOI: 10.1016/j.jpba.2021.114517] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 11/27/2021] [Accepted: 12/01/2021] [Indexed: 12/29/2022]
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18
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Clarke WA, Chatelut E, Fotoohi AK, Larson RA, Martin JH, Mathijssen RHJ, Salamone SJ. Therapeutic drug monitoring in oncology: International Association of Therapeutic Drug Monitoring and Clinical Toxicology consensus guidelines for imatinib therapy. Eur J Cancer 2021; 157:428-440. [PMID: 34597977 DOI: 10.1016/j.ejca.2021.08.033] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 08/17/2021] [Accepted: 08/19/2021] [Indexed: 12/30/2022]
Abstract
Although therapeutic drug monitoring (TDM) is an important tool in guiding drug dosing for other areas of medicine including infectious diseases, cardiology, psychiatry and transplant medicine, it has not gained wide acceptance in oncology. For imatinib and other tyrosine kinase inhibitors, a flat dosing approach is utilised for management of oral chemotherapy. There are many published studies examining the correlation of blood concentrations with clinical effects of imatinib. The International Association of Therapeutic Drug Monitoring and Clinical Toxicology (IATDMCT) determined that there was a need to examine the published literature regarding utility of TDM in imatinib therapy and to develop consensus guidelines for TDM based on the available data. This article summarises the scientific evidence regarding TDM of imatinib, as well as the consensus guidelines developed by the IATDMCT.
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Affiliation(s)
- William A Clarke
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
| | - Etienne Chatelut
- Université de Toulouse, Inserm, Institut Claudius-Regaud, Toulouse, France
| | - Alan K Fotoohi
- Division of Clinical Pharmacology, Department of Laboratory Medicine, Karolinska Institute, Karolinska University Hospital, Huddinge, Stockholm, 141 86, Sweden
| | - Richard A Larson
- Department of Medicine and Comprehensive Cancer Center, University of Chicago, Chicago, IL, USA
| | - Jennifer H Martin
- Centre for Drug Repurposing and Medicines Research, University of Newcastle. Level 3, Hunter Medical Research Institute, New Lambton Heights, 2305, New South Wales, Australia. https://twitter.com/jenhelenmar
| | - Ron H J Mathijssen
- Department of Medical Oncology, Erasmus MC Cancer Institute, Erasmus University Medical Center, Rotterdam, the Netherlands
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19
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Groenland SL, Ratain MJ, Chen LS, Gandhi V. The Right Dose: From Phase I to Clinical Practice. Am Soc Clin Oncol Educ Book 2021; 41:92-106. [PMID: 34010057 DOI: 10.1200/edbk_319567] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
To realize the full potential of promising new anticancer drugs, it is of paramount importance to administer them at the right dose. The aim of this educational article is to provide several opportunities to optimize anticancer drug dosing, focusing on oral targeted therapies. First, therapeutic drug monitoring can optimize exposure in individual patients, if the optimal concentration is known. This approach is of particular interest in regard to oral kinase inhibitors with high interindividual pharmacokinetic variability. If exposure is related to response, then therapeutic drug monitoring is potentially feasible, although the clinical utility of this approach has not yet been established. Other approaches to reduce variability include administration of more frequent, smaller doses and administration under optimal prandial conditions. However, for many drugs, the labeled dose has not been demonstrated to be the optimal dose; for such agents, the vast majority of patients may be receiving excessive doses, which results in excessive toxicity. Furthermore, administration of lower off-label doses may reduce both medical and financial toxicity. These strategies should be applied from registration studies to clinical practice, with the goal of better optimizing anticancer treatment.
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Affiliation(s)
- Stefanie L Groenland
- Department of Clinical Pharmacology, Division of Medical Oncology, the Netherlands Cancer Institute, Amsterdam, Netherlands
| | - Mark J Ratain
- Section of Hematology/Oncology, Department of Medicine, University of Chicago, Chicago, IL
| | - Lisa S Chen
- Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Varsha Gandhi
- Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX.,Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX
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20
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van Eerden RAG, Oomen-de Hoop E, Noordam A, Mathijssen RHJ, Koolen SLW. Feasibility of Extrapolating Randomly Taken Plasma Samples to Trough Levels for Therapeutic Drug Monitoring Purposes of Small Molecule Kinase Inhibitors. Pharmaceuticals (Basel) 2021; 14:ph14020119. [PMID: 33557114 PMCID: PMC7913819 DOI: 10.3390/ph14020119] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 01/28/2021] [Accepted: 01/29/2021] [Indexed: 02/06/2023] Open
Abstract
Small molecule kinase inhibitors (SMKIs) are widely used in oncology. Therapeutic drug monitoring (TDM) for SMKIs could reduce underexposure or overexposure. However, logistical issues such as timing of blood withdrawals hamper its implementation into clinical practice. Extrapolating a random concentration to a trough concentration using the elimination half-life could be a simple and easy way to overcome this problem. In our study plasma concentrations observed during 24 h blood sampling were used for extrapolation to trough levels. The objective was to demonstrate that extrapolation of randomly taken blood samples will lead to equivalent estimated trough samples compared to measured Cmin values. In total 2241 blood samples were analyzed. The estimated Ctrough levels of afatinib and sunitinib fulfilled the equivalence criteria if the samples were drawn after Tmax. The calculated Ctrough levels of erlotinib, imatinib and sorafenib met the equivalence criteria if they were taken, respectively, 12 h, 3 h and 10 h after drug intake. For regorafenib extrapolation was not feasible. In conclusion, extrapolation of randomly taken drug concentrations to a trough concentration using the mean elimination half-life is feasible for multiple SMKIs. Therefore, this simple method could positively contribute to the implementation of TDM in oncology.
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Affiliation(s)
- Ruben A. G. van Eerden
- Department of Medical Oncology, Erasmus MC Cancer Institute, 3015GD Rotterdam, The Netherlands; (E.O.-d.H.); (A.N.); (R.H.J.M.); (S.L.W.K.)
- Correspondence: ; Tel.: +31-10-7039640
| | - Esther Oomen-de Hoop
- Department of Medical Oncology, Erasmus MC Cancer Institute, 3015GD Rotterdam, The Netherlands; (E.O.-d.H.); (A.N.); (R.H.J.M.); (S.L.W.K.)
| | - Aad Noordam
- Department of Medical Oncology, Erasmus MC Cancer Institute, 3015GD Rotterdam, The Netherlands; (E.O.-d.H.); (A.N.); (R.H.J.M.); (S.L.W.K.)
| | - Ron H. J. Mathijssen
- Department of Medical Oncology, Erasmus MC Cancer Institute, 3015GD Rotterdam, The Netherlands; (E.O.-d.H.); (A.N.); (R.H.J.M.); (S.L.W.K.)
| | - Stijn L. W. Koolen
- Department of Medical Oncology, Erasmus MC Cancer Institute, 3015GD Rotterdam, The Netherlands; (E.O.-d.H.); (A.N.); (R.H.J.M.); (S.L.W.K.)
- Department of Hospital Pharmacy, Erasmus MC, University Medical Center, 3015GD Rotterdam, The Netherlands
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Xu H, Liu Q. Individualized Management of Blood Concentration in Patients with Gastrointestinal Stromal Tumors. Onco Targets Ther 2021; 13:13345-13355. [PMID: 33456310 PMCID: PMC7804055 DOI: 10.2147/ott.s279998] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Accepted: 11/18/2020] [Indexed: 01/29/2023] Open
Abstract
Gastrointestinal stromal tumor (GIST) is the most common mesenchymal tumor, and surgical resection is the first choice for the treatment of the disease, but since the advent of tyrosine kinase inhibitors (TKIs) such as imatinib (IM), the prognosis of the disease has undergone revolutionary changes. According to the current version of the guidelines, most GIST patients receive a fixed dose without taking into account their own individual differences, resulting in a wide difference in blood concentration, adverse reactions and prognosis. With more studies on the relationship between blood drug concentrations and prognosis, the concept of individualized therapy has been paid more attention by researchers. Therapeutic drug monitoring (TDM) has also been made available for the research field of GIST targeted therapy. How to reduce the incidence of drug resistance and adverse reactions in patients with GISTs has become the focus of the current research. This article reviews the common monitoring methods and timing of TKIs blood concentration, the reasonable range of blood drug concentration, the toxic or adverse effects caused by high blood drug concentration, some possible factors affecting blood drug concentration and recent research progress, in order to discuss and summarize the treatment strategy of individual blood drug concentration, improve the prognosis of patients and reduce the adverse effects as much as possible.
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Affiliation(s)
- Hao Xu
- Department of Gastrointestinal Surgery, The First Hospital of China Medical University, Shenyang, People's Republic of China
| | - Qi Liu
- Trauma Center, The First Hospital of China Medical University, Shenyang, People's Republic of China
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