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Högnäsbacka AA, Poot AJ, Plisson C, Bergare J, Bonsall DR, McCluskey SP, Wells LA, Kooijman E, Schuit RC, Verlaan M, Beaino W, van Dongen GAMS, Vugts DJ, Elmore CS, Passchier J, Windhorst AD. Synthesis and preclinical evaluation of [ 11C]EAI045 as a PET tracer for imaging tumors expressing mutated epidermal growth factor receptor. EJNMMI Res 2024; 14:19. [PMID: 38363422 PMCID: PMC10873260 DOI: 10.1186/s13550-024-01078-6] [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: 08/08/2023] [Accepted: 02/02/2024] [Indexed: 02/17/2024] Open
Abstract
BACKGROUND Mutations in the epidermal growth factor receptor (EGFR) kinase domain are common in non-small cell lung cancer. Conventional tyrosine kinase inhibitors target the mutation site in the ATP binding pocket, thereby inhibiting the receptor's function. However, subsequent treatment resistance mutations in the ATP binding site are common. The EGFR allosteric inhibitor, EAI045, is proposed to have an alternative mechanism of action, disrupting receptor signaling independent of the ATP-binding site. The antibody cetuximab is hypothesized to increase the number of accessible allosteric pockets for EAI045, thus increasing the potency of the inhibitor. This work aimed to gain further knowledge on pharmacokinetics, the EGFR mutation-targeting potential, and the influence of cetuximab on the uptake by radiolabeling EAI045 with carbon-11 and tritium. RESULTS 2-(5-fluoro-2-hydroxyphenyl)-2-((2-iodobenzyl)amino)-N-(thiazol-2-yl)acetamide and 2-(5-fluoro-2-hydroxyphenyl)-N-(5-iodothiazol-2-yl)-2-(1-oxoisoindolin-2-yl)acetamide were synthesized as precursors for the carbon-11 and tritium labeling of EAI045, respectively. [11C]EAI045 was synthesized using [11C]CO in a palladium-catalyzed ring closure in a 10 ± 1% radiochemical yield (decay corrected to end of [11C]CO2 production), > 97% radiochemical purity and 26 ± 1 GBq/µmol molar activity (determined at end of synthesis) in 51 min. [3H]EAI045 was synthesized by a tritium-halogen exchange in a 0.2% radiochemical yield, 98% radiochemical purity, and 763 kBq/nmol molar activity. The ability of [11C]EAI045 to differentiate between L858R/T790M mutated EGFR expressing H1975 xenografts and wild-type EGFR expressing A549 xenografts was evaluated in female nu/nu mice. The uptake was statistically significantly higher in H1975 xenografts compared to A549 xenografts (0.45 ± 0.07%ID/g vs. 0.31 ± 0.10%ID/g, P = 0.0166). The synergy in inhibition between EAI045 and cetuximab was evaluated in vivo and in vitro. While there was some indication that cetuximab influenced the uptake of [3H]EAI045 in vitro, this could not be confirmed in vivo when tumor-bearing mice were administered cetuximab (0.5 mg), 24 h prior to injection of [11C]EAI045. CONCLUSIONS EAI045 was successfully labeled with tritium and carbon-11, and the in vivo results indicated [11C]EAI045 may be able to distinguish between mutated and non-mutated EGFR in non-small cell lung cancer mouse models. Cetuximab was hypothesized to increase EAI045 uptake; however, no significant effect was observed on the uptake of [11C]EAI045 in vivo or [3H]EAI045 in vitro in H1975 xenografts and cells.
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Affiliation(s)
- Antonia A Högnäsbacka
- Department Radiology and Nuclear Medicine, Vrije Universiteit Amsterdam, Amsterdam UMC, De Boelelaan 1117, 1081HV, Amsterdam, The Netherlands.
- Cancer Center Amsterdam, Biomarkers and Imaging, Amsterdam, the Netherlands.
| | - Alex J Poot
- Department Radiology and Nuclear Medicine, Vrije Universiteit Amsterdam, Amsterdam UMC, De Boelelaan 1117, 1081HV, Amsterdam, The Netherlands
- Cancer Center Amsterdam, Biomarkers and Imaging, Amsterdam, the Netherlands
| | | | - Jonas Bergare
- Early Chemical Development, Pharmaceutical Sciences, R&D AstraZeneca, Gothenburg, Sweden
| | | | | | | | - Esther Kooijman
- Department Radiology and Nuclear Medicine, Vrije Universiteit Amsterdam, Amsterdam UMC, De Boelelaan 1117, 1081HV, Amsterdam, The Netherlands
- Cancer Center Amsterdam, Biomarkers and Imaging, Amsterdam, the Netherlands
| | - Robert C Schuit
- Department Radiology and Nuclear Medicine, Vrije Universiteit Amsterdam, Amsterdam UMC, De Boelelaan 1117, 1081HV, Amsterdam, The Netherlands
- Cancer Center Amsterdam, Biomarkers and Imaging, Amsterdam, the Netherlands
| | - Mariska Verlaan
- Department Radiology and Nuclear Medicine, Vrije Universiteit Amsterdam, Amsterdam UMC, De Boelelaan 1117, 1081HV, Amsterdam, The Netherlands
- Cancer Center Amsterdam, Biomarkers and Imaging, Amsterdam, the Netherlands
| | - Wissam Beaino
- Department Radiology and Nuclear Medicine, Vrije Universiteit Amsterdam, Amsterdam UMC, De Boelelaan 1117, 1081HV, Amsterdam, The Netherlands
- Cancer Center Amsterdam, Biomarkers and Imaging, Amsterdam, the Netherlands
| | - Guus A M S van Dongen
- Department Radiology and Nuclear Medicine, Vrije Universiteit Amsterdam, Amsterdam UMC, De Boelelaan 1117, 1081HV, Amsterdam, The Netherlands
- Cancer Center Amsterdam, Biomarkers and Imaging, Amsterdam, the Netherlands
| | - Danielle J Vugts
- Department Radiology and Nuclear Medicine, Vrije Universiteit Amsterdam, Amsterdam UMC, De Boelelaan 1117, 1081HV, Amsterdam, The Netherlands
- Cancer Center Amsterdam, Biomarkers and Imaging, Amsterdam, the Netherlands
| | - Charles S Elmore
- Early Chemical Development, Pharmaceutical Sciences, R&D AstraZeneca, Gothenburg, Sweden
| | | | - Albert D Windhorst
- Department Radiology and Nuclear Medicine, Vrije Universiteit Amsterdam, Amsterdam UMC, De Boelelaan 1117, 1081HV, Amsterdam, The Netherlands
- Cancer Center Amsterdam, Biomarkers and Imaging, Amsterdam, the Netherlands
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Narayanam MK, Tsang JE, Xu S, Nathanson DA, Murphy JM. 18F-Labeled brain-penetrant EGFR tyrosine kinase inhibitors for PET imaging of glioblastoma. Chem Sci 2023; 14:13825-13831. [PMID: 38075671 PMCID: PMC10699577 DOI: 10.1039/d3sc04424f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Accepted: 11/09/2023] [Indexed: 02/12/2024] Open
Abstract
Significant evidence suggests that the failure of clinically tested epidermal growth factor receptor (EGFR) tyrosine kinase inhibitors (e.g. erlotinib, lapatinib, gefitinib) in glioblastoma (GBM) patients is primarily attributed to insufficient brain penetration, resulting in inadequate exposure to the targeted cells. Molecular imaging tools can facilitate GBM drug development by visualizing drug biodistribution and confirming target expression and localization. To assess brain exposure via PET molecular imaging, we synthesized fluorine-18 isotopologues of two brain-penetrant EGFR tyrosine kinase inhibitors developed specifically for GBM. Adapting our recently reported radiofluorination of N-arylsydnones, we constructed an ortho-disubstituted [18F]fluoroarene as the key intermediate. The radiotracers were produced on an automated synthesis module in 7-8% activity yield with high molar activity. In vivo PET imaging revealed rapid brain uptake in rodents and tumor accumulation in an EGFR-driven orthotopic GBM xenograft model.
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Affiliation(s)
- Maruthi Kumar Narayanam
- Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, University of California Los Angeles CA 90095 USA
- Crump Institute for Molecular Imaging, David Geffen School of Medicine, University of California Los Angeles CA 90095 USA
| | - Jonathan E Tsang
- Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, University of California Los Angeles CA 90095 USA
| | - Shili Xu
- Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, University of California Los Angeles CA 90095 USA
- Crump Institute for Molecular Imaging, David Geffen School of Medicine, University of California Los Angeles CA 90095 USA
| | - David A Nathanson
- Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, University of California Los Angeles CA 90095 USA
| | - Jennifer M Murphy
- Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, University of California Los Angeles CA 90095 USA
- Crump Institute for Molecular Imaging, David Geffen School of Medicine, University of California Los Angeles CA 90095 USA
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Coghi P, Li J, Hosmane NS, Zhu Y. Next generation of boron neutron capture therapy (BNCT) agents for cancer treatment. Med Res Rev 2023; 43:1809-1830. [PMID: 37102375 DOI: 10.1002/med.21964] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 03/27/2023] [Accepted: 04/12/2023] [Indexed: 04/28/2023]
Abstract
Boron neutron capture therapy (BNCT) is one of the most promising treatments among neutron capture therapies due to its long-term clinical application and unequivocally obtained success during clinical trials. Boron drug and neutron play an equivalent crucial role in BNCT. Nevertheless, current clinically used l-boronophenylalanine (BPA) and sodium borocaptate (BSH) suffer from large uptake dose and low blood to tumor selectivity, and that initiated overwhelm screening of next generation of BNCT agents. Various boron agents, such as small molecules and macro/nano-vehicles, have been explored with better success. In this featured article, different types of agents are rationally analyzed and compared, and the feasible targets are shared to present a perspective view for the future of BNCT in cancer treatment. This review aims at summarizing the current knowledge of a variety of boron compounds, reported recently, for the application of BCNT.
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Affiliation(s)
- Paolo Coghi
- School of Pharmacy, Macau University of Science and Technology, Macau, China
| | - Jinxin Li
- School of Pharmacy, Macau University of Science and Technology, Macau, China
| | - Narayan S Hosmane
- Department of Chemistry and Biochemistry, Northern Illinois University, DeKalb, Illinois, USA
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Högnäsbacka A, Poot AJ, Kooijman E, Schuit RC, Schreurs M, Verlaan M, van den Hoek J, Heideman DAM, Beaino W, van Dongen GAMS, Vugts DJ, Windhorst AD. Synthesis and preclinical evaluation of two osimertinib isotopologues labeled with carbon-11 as PET tracers targeting the tyrosine kinase domain of the epidermal growth factor receptor. Nucl Med Biol 2023; 120-121:108349. [PMID: 37209556 DOI: 10.1016/j.nucmedbio.2023.108349] [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: 02/22/2023] [Revised: 04/05/2023] [Accepted: 04/18/2023] [Indexed: 05/22/2023]
Abstract
INTRODUCTION Osimertinib is a third-generation tyrosine kinase inhibitor (TKI) that is able to inhibit the EGFR treatment resistance mutation T790M and primary EGFR mutations Del19 and L858R. The aim of the study was to evaluate the potential of carbon-11 labeled osimertinib to be used as a tracer for the PET imaging of tumors bearing the T790M mutation. METHODS Osimertinib was labeled with carbon-11 at two positions, and the effect of the labeling position on the metabolism and biodistribution was studied in female nu/nu mice. The mutation status specificity of osimertinib was confirmed in vitro in a cell growth inhibition experiment, and the tumor-targeting potential of the carbon-11 isotopologues was evaluated using female nu/nu mice xenografted with NSCLC cell lines; the wild-type EGFR expressing A549, the primary Del19 EGFR mutated HCC827 and the resistance T790M/L858R mutated H1975. One of the osimertinib tracers was selected based on the results acquired and evaluated for tracer specificity and selectivity by assessment of tumor uptake in a PET study where HCC827 tumor-bearing mice were pretreated with osimertinib or afatinib. RESULTS [Methylindole-11C]- and [dimethylamine-11C]osimertinib were synthesized by 11C-methylation of precursors AZ5104 and AZ7550, respectively. Rapid metabolism of both analogs of [11C]osimertinib was observed. Although the tumor uptake and retention of [methylindole-11C]- and [dimethylamine-11C]osimertinib in tumors were similar, the tumor-to-muscle ratios appeared to be higher for [methylindole-11C]osimertinib. The highest uptake, tumor-to-blood, and tumor-to-muscle ratio were observed in the Del19 EGFR mutated HCC827 tumors. However, the specificity and selectivity of [methylindole-11C]osimertinib PET could not be demonstrated in HCC827 tumors. The uptake of [methylindole-11C]osimertinib was not significantly higher in T790M resistance mutated H1975 xenografts compared to the negative control cell line A549. CONCLUSIONS Osimertinib was successfully labeled at two positions with carbon-11, yielding two EGFR PET tracers, [methylindole-11C]osimertinib and [dimethylamine-11C]osimertinib. The preclinical evaluation demonstrated uptake and retention in three NSCLC xenografts; A549, HCC827, and H1975. The highest uptake was observed in the primary Del19 EGFR mutated HCC827. The ability of [methylindole-11C]osimertinib to distinguish between the T790M resistance mutated H1975 xenografts and the wild-type EGFR expressing A549 could not be confirmed in the ex vivo study.
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Affiliation(s)
- Antonia Högnäsbacka
- Amsterdam UMC location Vrije Universiteit Amsterdam, Dept. Radiology & Nuclear Medicine, De Boelelaan 1117, Amsterdam, the Netherlands; Cancer Center Amsterdam, Imaging and Biomarkers, Amsterdam, the Netherlands.
| | - Alex J Poot
- Amsterdam UMC location Vrije Universiteit Amsterdam, Dept. Radiology & Nuclear Medicine, De Boelelaan 1117, Amsterdam, the Netherlands; Cancer Center Amsterdam, Imaging and Biomarkers, Amsterdam, the Netherlands
| | - Esther Kooijman
- Amsterdam UMC location Vrije Universiteit Amsterdam, Dept. Radiology & Nuclear Medicine, De Boelelaan 1117, Amsterdam, the Netherlands; Cancer Center Amsterdam, Imaging and Biomarkers, Amsterdam, the Netherlands
| | - Robert C Schuit
- Amsterdam UMC location Vrije Universiteit Amsterdam, Dept. Radiology & Nuclear Medicine, De Boelelaan 1117, Amsterdam, the Netherlands; Cancer Center Amsterdam, Imaging and Biomarkers, Amsterdam, the Netherlands
| | - Maxime Schreurs
- Amsterdam UMC location Vrije Universiteit Amsterdam, Dept. Radiology & Nuclear Medicine, De Boelelaan 1117, Amsterdam, the Netherlands; Cancer Center Amsterdam, Imaging and Biomarkers, Amsterdam, the Netherlands
| | - Mariska Verlaan
- Amsterdam UMC location Vrije Universiteit Amsterdam, Dept. Radiology & Nuclear Medicine, De Boelelaan 1117, Amsterdam, the Netherlands; Cancer Center Amsterdam, Imaging and Biomarkers, Amsterdam, the Netherlands
| | - Johan van den Hoek
- Amsterdam UMC location Vrije Universiteit Amsterdam, Dept. Radiology & Nuclear Medicine, De Boelelaan 1117, Amsterdam, the Netherlands; Cancer Center Amsterdam, Imaging and Biomarkers, Amsterdam, the Netherlands
| | - Daniëlle A M Heideman
- Cancer Center Amsterdam, Imaging and Biomarkers, Amsterdam, the Netherlands; Amsterdam UMC location Vrije Universiteit Amsterdam, Dept. Pathology, De Boelelaan 1117, Amsterdam, the Netherlands
| | - Wissam Beaino
- Amsterdam UMC location Vrije Universiteit Amsterdam, Dept. Radiology & Nuclear Medicine, De Boelelaan 1117, Amsterdam, the Netherlands; Cancer Center Amsterdam, Imaging and Biomarkers, Amsterdam, the Netherlands
| | - Guus A M S van Dongen
- Amsterdam UMC location Vrije Universiteit Amsterdam, Dept. Radiology & Nuclear Medicine, De Boelelaan 1117, Amsterdam, the Netherlands; Cancer Center Amsterdam, Imaging and Biomarkers, Amsterdam, the Netherlands
| | - Danielle J Vugts
- Amsterdam UMC location Vrije Universiteit Amsterdam, Dept. Radiology & Nuclear Medicine, De Boelelaan 1117, Amsterdam, the Netherlands; Cancer Center Amsterdam, Imaging and Biomarkers, Amsterdam, the Netherlands
| | - Albert D Windhorst
- Amsterdam UMC location Vrije Universiteit Amsterdam, Dept. Radiology & Nuclear Medicine, De Boelelaan 1117, Amsterdam, the Netherlands; Cancer Center Amsterdam, Imaging and Biomarkers, Amsterdam, the Netherlands
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Shi D, Dong Y, Zhou W, Bai L, Huang J, Han Y, Sun P, Huang Y, Huang Y, Chen L, Cao M, Wu H, Huang S. Pharmacokinetic analysis of 6-O-[ 18F]FEE for PET imaging of EGFR mutation. Bioorg Med Chem Lett 2023; 85:129217. [PMID: 36889652 DOI: 10.1016/j.bmcl.2023.129217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 02/25/2023] [Accepted: 03/03/2023] [Indexed: 03/08/2023]
Abstract
6-O-[18F]Fluoroethylerlotinib (6-O-[18F]FEE), with a suitable half-life for commercial distribution, may be a good replacement for [11C]erlotinib to identify epidermal growth factor receptor (EGFR) positive tumors with activating mutations to tyrosine kinase inhibitors therapy. In this study, we explored the fully automated synthesis of 6-O-[18F]FEE and investigated its pharmacokinetics in tumor-bearing mice. 6-O-[18F]FEE with high specific activity (28-100 GBq/μmol) and radiochemistry purity (over 99 %) was obtained by two-step reaction and Radio-HPLC separation in PET-MF-2 V-IT-1 automated synthesizer. PET imaging of 6-O-[18F]FEE in HCC827, A431, and U87 tumor-bearing mice with different EGFR expression and mutation was performed. Uptake and blocking of PET imaging indicated that the probe specifically targeted exon 19 deleted EGFR (the quantitative analysis of tumor-to-mouse ratio for HCC827, HCC827 blocking, U87, A431 was 2.58 ± 0.24, 1.20 ± 0.15, 1.18 ± 0.19, and 1.05 ± 0.13 respectively). Dynamic imaging was used to study the pharmacokinetics of the probe in tumor-bearing mice. Logan plot graphical analysis demonstrated late linearity and a high fitting correlation coefficient (0.998), supporting reversible kinetics. According to the Akaike Information Criterion (AIC) rule, the 2-compartment reversible model was more consistent with the metabolic properties of 6-O-[18F]FEE. The automated radiosynthesis and pharmacokinetic analysis will promote clinically transformation of 6-O-[18F]FEE.
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Affiliation(s)
- Dazhi Shi
- GDMPA Key Laboratory for Quality Control and Evaluation of Radiopharmaceuticals, Department of Nuclear Medicine, Nanfang Hospital, Southern Medical University, 1838 Guangzhou North Road, Guangzhou, Guangdong Province 510515, China
| | - Ye Dong
- GDMPA Key Laboratory for Quality Control and Evaluation of Radiopharmaceuticals, Department of Nuclear Medicine, Nanfang Hospital, Southern Medical University, 1838 Guangzhou North Road, Guangzhou, Guangdong Province 510515, China
| | - Wenlan Zhou
- GDMPA Key Laboratory for Quality Control and Evaluation of Radiopharmaceuticals, Department of Nuclear Medicine, Nanfang Hospital, Southern Medical University, 1838 Guangzhou North Road, Guangzhou, Guangdong Province 510515, China
| | - Lu Bai
- GDMPA Key Laboratory for Quality Control and Evaluation of Radiopharmaceuticals, Department of Nuclear Medicine, Nanfang Hospital, Southern Medical University, 1838 Guangzhou North Road, Guangzhou, Guangdong Province 510515, China
| | - Jiawen Huang
- National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital & Shenzhen Hospital, Chinese Academy of Medical Sciences and, Peking Union Medical College, Shenzhen 518116, China
| | - Yanjiang Han
- GDMPA Key Laboratory for Quality Control and Evaluation of Radiopharmaceuticals, Department of Nuclear Medicine, Nanfang Hospital, Southern Medical University, 1838 Guangzhou North Road, Guangzhou, Guangdong Province 510515, China
| | - Penghui Sun
- GDMPA Key Laboratory for Quality Control and Evaluation of Radiopharmaceuticals, Department of Nuclear Medicine, Nanfang Hospital, Southern Medical University, 1838 Guangzhou North Road, Guangzhou, Guangdong Province 510515, China
| | - Yanchao Huang
- GDMPA Key Laboratory for Quality Control and Evaluation of Radiopharmaceuticals, Department of Nuclear Medicine, Nanfang Hospital, Southern Medical University, 1838 Guangzhou North Road, Guangzhou, Guangdong Province 510515, China
| | - Yong Huang
- National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital & Shenzhen Hospital, Chinese Academy of Medical Sciences and, Peking Union Medical College, Shenzhen 518116, China
| | - Li Chen
- GDMPA Key Laboratory for Quality Control and Evaluation of Radiopharmaceuticals, Department of Nuclear Medicine, Nanfang Hospital, Southern Medical University, 1838 Guangzhou North Road, Guangzhou, Guangdong Province 510515, China
| | - Min Cao
- GDMPA Key Laboratory for Quality Control and Evaluation of Radiopharmaceuticals, Department of Nuclear Medicine, Nanfang Hospital, Southern Medical University, 1838 Guangzhou North Road, Guangzhou, Guangdong Province 510515, China
| | - Hubing Wu
- GDMPA Key Laboratory for Quality Control and Evaluation of Radiopharmaceuticals, Department of Nuclear Medicine, Nanfang Hospital, Southern Medical University, 1838 Guangzhou North Road, Guangzhou, Guangdong Province 510515, China.
| | - Shun Huang
- GDMPA Key Laboratory for Quality Control and Evaluation of Radiopharmaceuticals, Department of Nuclear Medicine, Nanfang Hospital, Southern Medical University, 1838 Guangzhou North Road, Guangzhou, Guangdong Province 510515, China.
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