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Mishra S, Stany B, Das A, Kanagavel D, Vijayan M. A Comprehensive Review of Membrane Transporters and MicroRNA Regulation in Alzheimer's Disease. Mol Neurobiol 2024:10.1007/s12035-024-04135-2. [PMID: 38558361 DOI: 10.1007/s12035-024-04135-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Accepted: 03/15/2024] [Indexed: 04/04/2024]
Abstract
Alzheimer's disease (AD) is a distressing neurodegenerative condition characterized by the accumulation of amyloid-beta (Aβ) plaques and tau tangles within the brain. The interconnectedness between membrane transporters (SLCs) and microRNAs (miRNAs) in AD pathogenesis has gained increasing attention. This review explores the localization, substrates, and functions of SLC transporters in the brain, emphasizing the roles of transporters for glutamate, glucose, nucleosides, and other essential compounds. The examination delves into the significance of SLCs in AD, their potential for drug development, and the intricate realm of miRNAs, encompassing their transcription, processing, functions, and regulation. MiRNAs have emerged as significant players in AD, including those associated with mitochondria and synapses. Furthermore, this review discusses the intriguing nexus of miRNAs targeting SLC transporters and their potential as therapeutic targets in AD. Finally, the review underscores the interaction between SLC transporters and miRNA regulation within the context of Alzheimer's disease, underscoring the need for further research in this area. This comprehensive review aims to shed light on the complex mechanisms underlying the causation of AD and provides insights into potential therapeutic approaches.
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Affiliation(s)
- Shatakshi Mishra
- School of Biosciences and Technology, Department of Biotechnology, VIT University, Vellore, Tamil Nadu, 632014, India
| | - B Stany
- School of Biosciences and Technology, Department of Biotechnology, VIT University, Vellore, Tamil Nadu, 632014, India
| | - Anushka Das
- School of Biosciences and Technology, Department of Biotechnology, VIT University, Vellore, Tamil Nadu, 632014, India
| | - Deepankumar Kanagavel
- School of Biosciences and Technology, Department of Biotechnology, VIT University, Vellore, Tamil Nadu, 632014, India.
| | - Murali Vijayan
- Department of Internal Medicine, Texas Tech University Health Sciences Center, 3601 4th Street, Lubbock, TX, 79430, USA.
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2
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Papadakos SP, Tsagkaris C, Papadakis M, Papazoglou AS, Moysidis DV, Zografos CG, Theocharis S. Angiogenesis in gastrointestinal stromal tumors: From bench to bedside. World J Gastrointest Oncol 2022; 14:1469-1477. [PMID: 36160752 PMCID: PMC9412926 DOI: 10.4251/wjgo.v14.i8.1469] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2022] [Revised: 05/15/2022] [Accepted: 07/17/2022] [Indexed: 02/05/2023] Open
Abstract
Gastrointestinal stromal tumors (GISTs) are rare neoplasms with an estimated incidence from 0.78 to 1-1.5 patients per 100000. They most commonly occur in the elderly during the eighth decade of life affecting predominantly the stomach, but also the small intestine, the omentum, mesentery and rectosigmoid. The available treatments for GIST are associated with a significant rate of recurrent disease and adverse events. Thorough understanding of GIST’s pathophysiology and translation of this knowledge into novel regimens or drug repurposing is essential to counter this challenge. The present review summarizes the existing evidence about the role of angiogenesis in GIST’s development and progression and discusses its clinical underpinnings.
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Affiliation(s)
- Stavros P Papadakos
- First Department of Pathology, School of Medicine, National and Kapodistrian University of Athens, Athens 10679, Greece
| | | | - Marios Papadakis
- University Hospital Witten-Herdecke, University of Witten-Herdecke, Wuppertal 42283, Germany
| | - Andreas S Papazoglou
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, Thessaloniki 54636, Greece
| | - Dimitrios V Moysidis
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, Thessaloniki 54636, Greece
| | - Constantinos G Zografos
- First Department of Surgery, Athens Medical School, National and Kapodistrian University of Athens, Laikon General Hospital, Athens 11527, Greece
| | - Stamatios Theocharis
- First Department of Pathology, Medical School, University of Athens, Athens 11527, Greece
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3
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Maekawa K, Yamamura M, Matsuki A, Ishikawa T, Hirai T, Yamaguchi Y, Saito Y, Kanda T. Impacts of SNPs on adverse events and trough concentration of imatinib in patients with gastrointestinal stromal tumors. Drug Metab Pharmacokinet 2021; 43:100441. [DOI: 10.1016/j.dmpk.2021.100441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 12/06/2021] [Accepted: 12/09/2021] [Indexed: 11/03/2022]
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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: 28] [Impact Index Per Article: 9.3] [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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5
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Chang X, Guo Y, Su L, Zhang Y, Hui W, Zhao H, Hu R, Sun W. Influence of MTHFR C677T Polymorphism on High-Dose Methotrexate-Related Toxicity in Patients With Primary Central Nervous System Diffuse Large B-Cell Lymphoma. CLINICAL LYMPHOMA MYELOMA & LEUKEMIA 2020; 21:91-96. [PMID: 33069634 DOI: 10.1016/j.clml.2020.08.020] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2020] [Revised: 08/24/2020] [Accepted: 08/29/2020] [Indexed: 12/29/2022]
Abstract
BACKGROUND Primary central nervous system diffuse large B-cell lymphoma (PCNS-DLBCL) is a relatively rare and aggressive neoplasm. High-dose methotrexate (HD-MTX) is an effective regimen for the treatment of PCNS-DLBCL, but MTX-related toxicity remains a problem. The aim of this analysis study was to investigate the influence of the methylenetetrahydrofolate reductase (MTHFR) gene C677T polymorphism on HD-MTX-related toxicity in patients with PCNS-DLBCL. MATERIAL/METHODS A prospective, observational study was conducted to analyze 148 MTX courses in 32 patients with PCNS-DLBCL. RESULTS The delayed MTX clearance was observed in 53 cycles (35.8%). The patients carrying the homozygous variant genotype had a higher risk of developing nephrotoxicity than those carrying the wild-type genotype (odds ratio [OR] 13.08; 95% confidence interval [CI], 1.65-103.86; P = .002) or heterozygous variant genotype (OR 8.43; 95% CI, 2.31-30.70; P < .001). Significant differences were observed in hepatotoxicity (OR 9.33; 95% CI, 2.54-34.27; P < .001) and hematologic toxicity (OR 3.09; 95% CI, 1.18-8.07; P = .024) in addition to nephrotoxicity between the homozygous variant genotype and the wild-type genotype. CONCLUSION The homozygous mutation of C to T at nucleotide 677 increases the risk on HD-MTX-related toxicity. The MTHFR C677T polymorphism can be used to predict HD-MTX-related toxicity for patients with PCNS-DLBCL.
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Affiliation(s)
- Xiaoli Chang
- Department of Hematology, Xuanwu Hospital, Capital Medical University, Beijing, P. R. China
| | - Yixian Guo
- Department of Hematology, Xuanwu Hospital, Capital Medical University, Beijing, P. R. China
| | - Li Su
- Department of Hematology, Xuanwu Hospital, Capital Medical University, Beijing, P. R. China
| | - Yunxiu Zhang
- Clinical Laboratory, Xuanwu Hospital, Capital Medical University, Beijing, P. R. China
| | - Wuhan Hui
- Department of Hematology, Xuanwu Hospital, Capital Medical University, Beijing, P. R. China
| | - Hong Zhao
- Department of Hematology, Xuanwu Hospital, Capital Medical University, Beijing, P. R. China
| | - Ronghua Hu
- Department of Hematology, Xuanwu Hospital, Capital Medical University, Beijing, P. R. China
| | - Wanling Sun
- Department of Hematology, Xuanwu Hospital, Capital Medical University, Beijing, P. R. China.
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6
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Ravegnini G, Valori G, Zhang Q, Ricci R, Hrelia P, Angelini S. Pharmacogenetics in the treatment of gastrointestinal stromal tumors - an updated review. Expert Opin Drug Metab Toxicol 2020; 16:797-808. [PMID: 32597248 DOI: 10.1080/17425255.2020.1789589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
INTRODUCTION Gastrointestinal stromal tumors (GIST) are the best example of a targeted therapy in solid tumors. The introduction of tyrosine kinase inhibitors (TKIs) deeply improved the prognosis of this tumor. However, a degree of inter-patient variability is still reported in response rates and pharmacogenetics may play an important role in the final clinical outcome. AREAS COVERED In this review, the authors provide an updated overview of the pharmacogenetic literature analyzing the role of polymorphisms in both GIST treatment efficacy and toxicity. EXPERT OPINION Besides the primary role of somatic DNA in dictating the clinical response to TKIs, several polymorphisms influencing their pharmacokinetics and pharmacodynamics have been identified as being potentially involved. In the last 10 years, many potential biomarkers have been proposed to predict clinical response and toxicity after TKI administration. However, the evidence is still too limited to promote a clinical translation. To date, the somatic mutational status represents the main player in clinical response to TKIs in GIST treatment; however, pharmacogenetics could still explain the degree of inter-patient variability observed in GIST patients. A combination of different theoretical approaches, experimental model systems, and statistical methods is clearly needed, in order to translate pharmacogenetics to clinical practice in the near future.
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Affiliation(s)
- Gloria Ravegnini
- Department of Pharmacy and Biotechnology, University of Bologna , Bologna, Italy
| | - Giorgia Valori
- Department of Pharmacy and Biotechnology, University of Bologna , Bologna, Italy
| | - Qianqian Zhang
- UOC di Anatomia Patologica, Fondazione Policlinico Universitario 'A. Gemelli' IRCCS , Rome, Italy
| | - Riccardo Ricci
- UOC di Anatomia Patologica, Fondazione Policlinico Universitario 'A. Gemelli' IRCCS , Rome, Italy.,Department of Pathology, Universita Cattolica del Sacro Cuore , Rome, Italy
| | - Patrizia Hrelia
- Department of Pharmacy and Biotechnology, University of Bologna , Bologna, Italy
| | - Sabrina Angelini
- Department of Pharmacy and Biotechnology, University of Bologna , Bologna, Italy
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7
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Versmissen J, Mirabito Colafella KM, Koolen SLW, Danser AHJ. Vascular Cardio-Oncology: Vascular Endothelial Growth Factor inhibitors and hypertension. Cardiovasc Res 2020; 115:904-914. [PMID: 30726882 DOI: 10.1093/cvr/cvz022] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Revised: 12/16/2018] [Accepted: 01/24/2019] [Indexed: 12/27/2022] Open
Abstract
Since the formation of new blood vessels is essential for tumour growth and metastatic spread, inhibition of angiogenesis by targeting the vascular endothelial growth factor (VEGF) pathway is an effective strategy for various types of cancer, most importantly renal cell carcinoma, thyroid cancer, and hepatocellular carcinoma. However, VEGF inhibitors have serious side effects, most importantly hypertension and nephropathy. In case of fulminant hypertension, this may only be handled by lowering the dosage since the blood pressure rise is proportional to the amount of VEGF inhibition. These effects pathophysiologically and clinically resemble the most severe complication of pregnancy, preeclampsia, in which case an insufficient placenta leads to a rise in sFlt-1 levels causing a decrease in VEGF availability. Due to this overlap, studies in preeclampsia may provide important information for VEGF inhibitor-induced toxicity and vice versa. In both VEGF inhibitor-induced toxicity and preeclampsia, endothelin (ET)-1 appears to be a pivotal player. In this review, after briefly summarizing the anticancer effects, we discuss the mechanisms that potentially underlie the unwanted effects of VEGF inhibitors, focusing on ET-1, nitric oxide and oxidative stress, the renin-angiotensin-aldosterone system, and rarefaction. Given the salt sensitivity of this phenomenon, as well as the beneficial effects of aspirin in preeclampsia and cancer, we next provide novel treatment options for VEGF inhibitor-induced toxicity, including salt restriction, ET receptor blockade, and cyclo-oxygenase inhibition, in addition to classical antihypertensive and renoprotective drugs. We conclude with the recommendation of therapeutic drug monitoring to improve patient outcome.
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Affiliation(s)
- Jorie Versmissen
- Division of Vascular Medicine and Pharmacology, Department of Internal Medicine, Erasmus MC University Medical Center, CA Rotterdam, The Netherlands
| | - Katrina M Mirabito Colafella
- Division of Vascular Medicine and Pharmacology, Department of Internal Medicine, Erasmus MC University Medical Center, CA Rotterdam, The Netherlands.,Cardiovascular Program, Monash Biomedicine Discovery Institute, Monash University, Melbourne, Australia.,Department of Physiology, Monash University, Melbourne, Australia
| | - Stijn L W Koolen
- Department of Medical Oncology, Erasmus MC Cancer Institute, Rotterdam, The Netherlands.,Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - A H Jan Danser
- Division of Vascular Medicine and Pharmacology, Department of Internal Medicine, Erasmus MC University Medical Center, CA Rotterdam, The Netherlands
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Caruso C, Garofalo C. Pharmacogenomics Biomarkers of Soft Tissue Sarcoma Therapies. Front Oncol 2020; 10:509. [PMID: 32351891 PMCID: PMC7174622 DOI: 10.3389/fonc.2020.00509] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2020] [Accepted: 03/20/2020] [Indexed: 12/19/2022] Open
Abstract
Soft tissue sarcomas (STS) are heterogeneous rare malignancies comprising ~1% of all solid cancers in adults and including more than 70 histological and molecular subtypes with different pathological and clinical development characteristics. Over the last two decades, the increased knowledge of the new molecular and genomic mechanisms of different STS histotypes allowed for a reclassification of these tumors and consequently to the development of novel chemotherapeutic agents. Generally, surgery, in combination with radiotherapy only in selected cases of localized disease, represents the most common treatment of primary STS, whereas the principal treatment modality for locally advanced or metastatic disease is first-line chemotherapy. The principal treatment for the preponderance of STS patients is usually an anthracycline (epirubicin and doxorubicin) in monotherapy or in combination with other drug novel chemotherapeutic agents. However, survival for treated patients with metastatic disease is poor, and a 2-years survival rate is about 30%. In this scenario, Pharmacogenomics (PGx) biomarkers that can predict drug response play an important role in the improvement of molecular diagnostics in clinical routines and contribute to elucidating the genetic basis for the differences in treatment efficacy and toxicity among STS patients. This review focuses on recent insight in the PGx biomarkers that have been described to modulate responsiveness and toxicity parameters of conventional and new chemotherapeutics drugs in several STS histotypes.
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Affiliation(s)
| | - Cecilia Garofalo
- Advanced Translational Research Laboratory, Veneto Institute of Oncology IOV – IRCCS, Padua, Italy
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9
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Gougis P, Palmieri LJ, Funck-Brentano C, Paci A, Flippot R, Mir O, Coriat R. Major pitfalls of protein kinase inhibitors prescription: A review of their clinical pharmacology for daily use. Crit Rev Oncol Hematol 2019; 141:112-124. [PMID: 31276964 DOI: 10.1016/j.critrevonc.2019.06.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Revised: 06/06/2019] [Accepted: 06/07/2019] [Indexed: 12/13/2022] Open
Abstract
Protein kinase inhibitors (PKI) are a growing class of anticancer agents. They are prescribed with flat doses, and their oral administration is associated with interindividual variability in exposure. Patients can be over- or underexposed, due to numerous factors. We reviewed key pharmacokinetic concepts and mechanisms by which PKIs prescription could be altered. Challenging situations that could lead to increased toxicity or to therapeutic failure are described and recommendation for clinicians are proposed. Finally, the interest of therapeutic drug monitoring and indications for its use in daily practice is discussed.
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Affiliation(s)
- Paul Gougis
- Sorbonne Université, Faculty of Medicine, AP-HP, Pitié-Salpêtrière Hospital, Department of Pharmacology and Clinical Investigation Center, F-75013, Paris, France; CLIP² Galilée, Pitié-Salpêtrière Hospital, F-75013, Paris, France.
| | - Lola-Jade Palmieri
- AP-HP, Cochin Hospital, Department of gastroenterology and gastrointestinal oncology, Université Paris Descartes, Paris, France
| | - Christian Funck-Brentano
- Sorbonne Université, Faculty of Medicine, AP-HP, Pitié-Salpêtrière Hospital, Department of Pharmacology and Clinical Investigation Center, F-75013, Paris, France; INSERM, CIC-1421 and UMR ICAN 1166, Institute of Cardiometabolism and Nutrition (ICAN), F-75013, Paris, France
| | - Angelo Paci
- Service de Pharmacologie, Département de Biologie et Pathologie Médicales, Gustave Roussy et Université Paris Saclay, Villejuif, France
| | - Ronan Flippot
- Department of Medical Oncology, Gustave Roussy, 114 rue Edouard Vaillant, 94800, Villejuif, France
| | - Olivier Mir
- Department of Medical Oncology, Gustave Roussy, 114 rue Edouard Vaillant, 94800, Villejuif, France; Department of Ambulatory Care, Gustave Roussy Cancer Campus, Villejuif, France
| | - Romain Coriat
- AP-HP, Cochin Hospital, Department of gastroenterology and gastrointestinal oncology, Université Paris Descartes, Paris, France
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Cai Z, Chen X, Zhang B, Cao D. Apatinib Treatment in Metastatic Gastrointestinal Stromal Tumor. Front Oncol 2019; 9:470. [PMID: 31245289 PMCID: PMC6579896 DOI: 10.3389/fonc.2019.00470] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Accepted: 05/16/2019] [Indexed: 02/05/2023] Open
Abstract
Background: Gastrointestinal stromal tumors (GISTs) are the most common mesenchymal tumors of the gastrointestinal tract. The clinical management of patients with metastatic GISTs is exceptionally challenging due to their poor prognosis. Apatinib is a multiple tyrosine kinase inhibitor. Here, we present the unique case with metastatic GISTs who derived clinical benefit from apatinib following the failure of imatinib and sunitinib. Case presentation: A 57-year-old man was admitted to our hospital diagnosed with metastatic and recurrent GISTs following surgical resection. Fifty-four months after the first-line imatinib treatment, he developed progressive disease and then was treated with cytoreductive surgery combined with imatinib. Disease progression occurred after 7 months. He then received second-line sunitinib and achieved a progression-free survival of 11 months. Apatinib mesylate was then administered. Follow-up imaging revealed a stable disease. Progression-free survival following apatinib therapy was at least 8 months. The only toxicities were hypertension and proteinuria, which were both controllable and well-tolerated. Conclusions: Treatment with apatinib provides an additional option for the treatment of patients with GISTs refractory to imatinib and sunitinib.
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Affiliation(s)
- Zhaolun Cai
- Department of Gastrointestinal Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Xin Chen
- Department of Gastrointestinal Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Bo Zhang
- Department of Gastrointestinal Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Dan Cao
- Department of Abdominal Oncology, Cancer Center of West China Hospital, Sichuan University, Chengdu, China
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Verboom MC, Kloth JSL, Swen JJ, Sleijfer S, Reyners AKL, Steeghs N, Mathijssen RHJ, Gelderblom H, Guchelaar HJ. Genetic polymorphisms in ABCG2 and CYP1A2 are associated with imatinib dose reduction in patients treated for gastrointestinal stromal tumors. THE PHARMACOGENOMICS JOURNAL 2019; 19:473-479. [PMID: 30713339 DOI: 10.1038/s41397-019-0079-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Revised: 08/24/2018] [Accepted: 12/20/2018] [Indexed: 12/23/2022]
Abstract
Imatinib has a mild toxicity profile, although severe adverse events may develop. In this pharmacogenetic pathway analysis the need for dose reduction and cessation of therapy was tested for an association with single nucleotide polymorphisms (SNPs) in genes related to imatinib pharmacology. Retrospective data from 315 patients with a gastrointestinal stromal tumor who received imatinib 400 mg o.d. was associated with 36 SNPs. SNPs that showed a trend in univariate testing were tested in a multivariate model with clinical factors and correction for multiple testing was performed. Dose reduction was associated with carriership of the A-allele in rs2231137 in ABCG2 (OR 7.35, p = 0.0002) and two C-alleles in rs762551 in CYP1A2 (OR 7.12, p = 0.001). Results remained significant after correction for multiple testing. Therapy cessation did not show an association with any of the tested SNPs. These results may help identifying patients at increased risk for toxicity who could benefit from intensified follow-up.
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Affiliation(s)
- Michiel C Verboom
- Department of Medical Oncology, Leiden University Medical Center, Leiden, The Netherlands.
| | - Jacqueline S L Kloth
- Department of Medical Oncology, Erasmus MC Cancer Institute, Rotterdam, The Netherlands
| | - Jesse J Swen
- Department of Clinical Pharmacy and Toxicology, Leiden University Medical Center, Leiden, The Netherlands
| | - Stefan Sleijfer
- Department of Medical Oncology, Erasmus MC Cancer Institute, Rotterdam, The Netherlands
| | - Anna K L Reyners
- Department of Medical Oncology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Neeltje Steeghs
- Department of Medical Oncology and Clinical Pharmacology, Antoni van Leeuwenhoek - Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Ron H J Mathijssen
- Department of Medical Oncology, Erasmus MC Cancer Institute, Rotterdam, The Netherlands
| | - Hans Gelderblom
- Department of Medical Oncology, Leiden University Medical Center, Leiden, The Netherlands
| | - Henk-Jan Guchelaar
- Department of Clinical Pharmacy and Toxicology, Leiden University Medical Center, Leiden, The Netherlands
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