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Matsumoto Y, Hattori K, Arima H, Motoyama K, Higashi T, Ishikawa H, Fukumitsu N, Aihara T, Nakai K, Kumada H, Sakurai H. Folate-appended cyclodextrin improves the intratumoral accumulation of existing boron compounds. Appl Radiat Isot 2020; 163:109201. [PMID: 32561042 DOI: 10.1016/j.apradiso.2020.109201] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2019] [Revised: 01/19/2020] [Accepted: 04/21/2020] [Indexed: 10/24/2022]
Abstract
In this study, the tumor accumulation and antitumor effect of folate-modified cyclodextrin (ND201) purified with folate receptor (FR) connotated with BSH were examined. ND201 and BSH were stably bound in blood, and the mixing ratio 1:1 was most efficient. ND-BSH showed higher boron concentration (38.5 ppm) than BSH alone (11.25 ppm). The maximum ND-BSH tumor/blood ratio was also markedly higher (6.58) than that of BSH alone (1.04). ND-BSH showed a significant antitumor effect compared with BSH after neutron irradiation.
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Affiliation(s)
- Yoshitaka Matsumoto
- Radiation Oncology, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8575, Japan; Proton Medical Research Center, University of Tsukuba Hospital, 2-1-1 Amakubo, Tsukuba, Ibaraki, 305-8576, Japan.
| | - Kenjiro Hattori
- CyDing Co., Ltd., 5-1 Oe, Chuo-ku, Kumamoto, 862-0973, Japan
| | - Hidetoshi Arima
- Laboratory of Evidence-Based Pharmacotherapy, Daiichi University of Pharmacy, 22-1 Tamakawa, Minami-ku, Fukuoka, 815-8511, Japan
| | - Keiichi Motoyama
- Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto, 862-0973, Japan
| | - Taishi Higashi
- Priority Organization for Innovation and Excellence, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto, 862-0973, Japan
| | - Hitoshi Ishikawa
- Radiation Oncology, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8575, Japan; Proton Medical Research Center, University of Tsukuba Hospital, 2-1-1 Amakubo, Tsukuba, Ibaraki, 305-8576, Japan
| | - Nobuyoshi Fukumitsu
- Department of Radiation Oncology, Kobe Proton Center, 1-6-8 Minatojima Minamimachi, Chuo-ku, Kobe, 650-0047, Japan
| | - Teruhito Aihara
- Faculty of Medicine, Osaka Medical College, 2-7 Daigakumachi, Takatsuki, Osaka, 569-8686, Japan
| | - Kei Nakai
- Radiation Oncology, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8575, Japan; Proton Medical Research Center, University of Tsukuba Hospital, 2-1-1 Amakubo, Tsukuba, Ibaraki, 305-8576, Japan
| | - Hiroaki Kumada
- Proton Medical Research Center, University of Tsukuba Hospital, 2-1-1 Amakubo, Tsukuba, Ibaraki, 305-8576, Japan
| | - Hideyuki Sakurai
- Radiation Oncology, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8575, Japan; Proton Medical Research Center, University of Tsukuba Hospital, 2-1-1 Amakubo, Tsukuba, Ibaraki, 305-8576, Japan
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Bergenheim AT, Capala J, Roslin M, Henriksson R. Distribution of BPA and metabolic assessment in glioblastoma patients during BNCT treatment: a microdialysis study. J Neurooncol 2005; 71:287-93. [PMID: 15735919 DOI: 10.1007/s11060-004-1724-0] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Boron neutron capture therapy (BNCT) is dependent on the selective accumulation of boron-10 in tumour cells. To maximise the radiation effect, the neutrons should be delivered when the ratio between the boron concentration in tumour cells to that in normal tissues reaches maximum. However, the pharmacokinetics of p-boronophenylalanine (BPA) and other boron delivery agents are only partly known. We used microdialysis to investigate the extracellular in vivo kinetics of boron in three intracerebral compartments -- solid tumour, brain adjacent to tumour (BAT), and the normal brain, as well as the subcutaneous tissue before, during, and after BNCT treatment. The findings were compared to the pharmacokinetics of BPA in the blood. We also measured the glucose metabolism and the levels of glutamate and glycerol in those compartments. Four patients were studied, two patients underwent surgical tumour resection and in two a stereotactic biopsy was performed. The patients were given BPA (900 mg/kg body weight) by a 6-h infusion. The infusion was completed approximately 2-3 h before neutron irradiation. In tumour tissue the extracellular concentration of BPA followed that of blood with a maximal concentration of 31.2 ppm and a maximal ratio vs. blood of 1.07. In BAT, the maximal concentration of BPA was 18.0 ppm with the peak level delayed for 4-6 h compared to the peak in blood with a maximal ratio of 1.2. Maximal blood concentration found was 41.0 ppm. The uptake of BPA in the normal brain was considerably lower than that in the blood and tumour tissue. No change in glucose metabolism was observed. The extracellular level of glycerol was increased after treatment in tumour tissue but not in normal brain suggesting a selective acute cytotoxic effect of BNCT on tumour cells.
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Suzuki M, Masunaga S, Kinashi Y, Nagata K, Sakurai Y, Nakamatsu K, Nishimura Y, Maruhashi A, Ono K. Intra-arterial administration of sodium borocaptate (BSH)/lipiodol emulsion delivers B-10 to liver tumors highly selectively for boron neutron capture therapy: experimental studies in the rat liver model. Int J Radiat Oncol Biol Phys 2004; 59:260-6. [PMID: 15093923 DOI: 10.1016/j.ijrobp.2003.12.018] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2003] [Revised: 12/08/2003] [Accepted: 12/15/2003] [Indexed: 11/24/2022]
Abstract
PURPOSE Boron neutron capture therapy (BNCT) is particle radiotherapy with alpha ((4)He) particle and recoiled lithium nucleus ((7)Li) derived from a reaction of boron ((10)B) and thermal neutron. We investigated applying BNCT to malignant liver tumors. The purpose of the present study was to reveal the efficacy for administration of emulsion of a boron compound (sodium borocaptate; BSH) and lipiodol via a hepatic artery using a rat liver tumor model. METHODS AND MATERIALS Rat liver tumors were developed by direct injection of Walker 256 cells into the liver parenchyma. BSH (75 mg/kg)/lipiodol (0.3 mL/kg) emulsion was administered via the hepatic artery. Boron concentrations in the tumors, liver, and blood were measured at 1, 6, and 12 h after administration. Neutron capture radiography (NCR) was taken to confirm the selective accumulation of (10)B in the liver tumors. RESULTS Boron concentrations in the liver tumors and the tumor/liver (T/L) boron concentration ratio at 1, 6, and 12 h after administration of BSH/lipiodol emulsion (concentration: T/L ratio) were 479.2 ppm: 4.0, 197.3 ppm: 14.9, and 96.5 ppm: 6.6, respectively. Highly selective irradiation was clearly demonstrated by the NCR images. CONCLUSIONS Intra-arterial administration of BSH/lipiodol emulsion is effective method for delivering high concentration of (10)B selectively to the liver tumors.
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Affiliation(s)
- Minoru Suzuki
- Radiation Oncology Research Laboratory, Research Reactor Institute, Kyoto University, Kyoto, Japan
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Eriksson L, Tolmachev V, Sjöberg S. Feasibility of palladium-catalyzed isotopic exchange between sodium [125I]I and 2-iodo-para-carborane. J Labelled Comp Radiopharm 2003. [DOI: 10.1002/jlcr.702] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Hideghéty K, Sauerwein W, Wittig A, Götz C, Paquis P, Grochulla F, Haselsberger K, Wolbers J, Moss R, Huiskamp R, Fankhauser H, de Vries M, Gabel D. Tissue uptake of BSH in patients with glioblastoma in the EORTC 11961 phase I BNCT trial. J Neurooncol 2003; 62:145-56. [PMID: 12749710 DOI: 10.1007/bf02699941] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE The uptake of the boron compound Na2B12H10-SH (BSH) in tumor and normal tissues was investigated in the frame of the EORTC phase I trial 'Postoperative treatment of glioblastoma with BNCT at the Petten Irradiation Facility' (protocol 11961). METHODS AND MATERIALS The boron concentration in blood, tumor, normal brain, dura, muscle, skin and bone was detected using inductively coupled plasma-atomic emission spectroscopy in 13 evaluable patients. In a first group of 10 patients 100 mg BSH/kg bodyweight (BW) were administered; a second group of 3 patients received 22.9 mg BSH/kg BW. The toxicity due to BSH was evaluated. RESULTS The average boron concentration in the tumor was 19.9 +/- 9.1 ppm (1 standard deviation (SD)) in the high dose group and 9.8 +/- 3.3 ppm in the low dose group, the tumor/blood ratios were 0.6 +/- 0.2 and 0.9 +/- 0.2, respectively. The highest boron uptake has been detected in the dura, very low uptake was found in the bone, the cerebro-spinal fluid and especially in the brain (brain/blood ratio 0.2 +/- 0.02 and 0.4 +/- 0.2). No toxicity was detected except flush-like symptoms in 2 cases during a BSH infusion at a much higher speed than prescribed. CONCLUSION BSH proved to be safe for clinical application at a dose of 100 mg BSH/kg infused and at a dose rate of 1 mg/kg/min. The study underlines the importance of a further investigation of BSH uptake in order to obtain enough data for significant statistical analysis. The boron concentration in blood seems to be a quite reliable parameter to predict the boron concentration in other tissues.
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Verbakel WFAR, Sauerwein W, Hideghety K, Stecher-Rasmussen F. Boron concentrations in brain during boron neutron capture therapy: in vivo measurements from the phase I trial EORTC 11961 using a gamma-ray telescope. Int J Radiat Oncol Biol Phys 2003; 55:743-56. [PMID: 12573762 DOI: 10.1016/s0360-3016(02)04392-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
PURPOSE Gamma-ray spectroscopic scans to measure boron concentrations in the irradiated volume were performed during treatment of 5 patients suffering from brain tumors with boron neutron capture therapy (BNCT). In BNCT, the dose that is meant to be targeted primarily to the tumor is the dose coming from the reaction 10B(n,alpha)7Li, which is determined by the boron concentration in tissue and the thermal neutron fluence rate. The boron distribution throughout the head of the patient during the treatment is therefore of major interest. The detection of the boron distribution during the irradiation was until now not possible. METHODS AND MATERIALS Five patients suffering from glioblastoma multiforme and treated with BNCT in a dose escalation study were administered the boron compound, boron sulfhydryl (BSH; Na(2)B(12)H(11)SH). Boron concentrations were reconstructed from measurements performed with the gamma-ray telescope which detects locally the specific gamma rays produced by neutron capture in 10B and 1H. RESULTS For all patients, at a 10B concentration in blood of 30 ppm, the boron concentration in nonoperated areas of the brain was very low, between 1 and 2.5 ppm. In the target volume, which included the area where the tumor had been removed and where remaining tumor cells have to be assumed, much higher boron concentrations were measured with large variations from one patient to another. Superficial tissue contained a higher concentration of 10B than the nonoperated areas of the brain, ranging between 8 and 15 ppm. CONCLUSIONS The measured results correspond with previous tissue uptake studies, confirming that normal brain tissue hardly absorbs the boron compound BSH. Gamma-ray telescope measurements seem to be a promising method to provide information on the biodistribution of boron during therapy. Furthermore, it also opens the possibility of in vivo dosimetry.
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Gibson CR, Staubus AE, Barth RF, Yang W, Ferketich AK, Moeschberger MM. Pharmacokinetics of sodium borocaptate: a critical assessment of dosing paradigms for boron neutron capture therapy. J Neurooncol 2003; 62:157-69. [PMID: 12749711 DOI: 10.1007/bf02699942] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The pharmacokinetics of sodium borocaptate (BSH), a drug that has been used clinically for boron neutron capture therapy (BNCT) of malignant brain tumors, have been characterized by measuring boron concentrations by direct current plasma-atomic emission spectroscopy (DCP-AES) in a group of 23 patients with high-grade gliomas. The disposition of BSH following intravenous (i.v.) infusion, which was determined by measuring plasma boron concentrations by DCP-AES, was consistent with a three-compartment open model with zero-order input and first-order elimination from the central compartment. Boron disposition was linear over the dose range of 26.5-88.2 mg BSH/kg body weight (b.w.), corresponding to 15-50 mg boron/kg b.w. Mean total body boron plasma clearance was 14.4 +/- 3.5 ml/min and the harmonic mean half-lives (range) were 0.6 (0.3-3.7), 6.5 (4.8-10.1) and 77.8 (49.6-172.0) h for the alpha, beta, and gamma disposition phases, respectively. Using an empirically determined plasma: blood boron concentration ratio of 1.3 +/- 0.2, the calculated total body boron blood clearance was 18.5 +/- 4.5 ml/min. In order to develop a model for selecting the optimum dosing paradigm, a pharmacokinetic correlation was established between the boron content of normal brain, solid tumor, and infiltrating tumor to the shallow tissue pharmacokinetic compartment (C2). Based on our model, it was concluded that although multiple i.v. infusions of BSH might increase absolute tumor boron concentrations, they will not improve the tumor: plasma boron concentration ratios over those attainable by a single i.v. infusion. The results from our study are confirmatory of those previously reported by others when blood sampling has been carried out for a sufficient period of time to adequately characterize the pharmacokinetics.
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Affiliation(s)
- Christopher R Gibson
- College of Pharmacy, Division of Pharmaceutics, The Ohio State University, Columbus, OH, USA.
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Gibson CR, Staubus AE, Barth RF, Yang W, Kleinholz NM, Jones RB, Green-Church KB, Tjarks W, Soloway AH. Electrospray ionization mass spectrometry coupled to reversed-phase ion-pair high-performance liquid chromatography for quantitation of sodium borocaptate and application to pharmacokinetic analysis. Anal Chem 2002; 74:2394-9. [PMID: 12038766 DOI: 10.1021/ac0112723] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We have developed a quantitative assay using electrospray ionization mass spectrometry coupled to reversed-phase ion-pair liquid chromatography (LC/MS) for quantitation of sodium borocaptate (BSH) in human plasma. The assay was developed using a Micromass Q-TOF II mass spectrometer equipped with an orthogonal electrospray source. The mobile phase was a 1:1 solution of methanol and 5 mM aqueous tetrabutylammonium acetate flowing at 0.2 mL/min, and the chromatography was performed using a Machery-Nagel Nucleosil C18 column. Plasma samples from patients who had received an intravenous infusion of sodium borocaptate (Na2B12H11SH), frequently referred to as BSH, were prepared for analysis by precipitation with acetonitrile. Following this, the supernatants were collected, and 40 microL was injected onto the column for analysis. The LC/MS assay was linear over a BSH plasma concentration range of 20-0.5 microg/mL with acceptable variability for both intra- and interassay precision. The LC/MS assay was used to generate pilot pharmacokinetic data for the plasma disposition of BSH in humans. The disposition of BSH was found to be consistent with a two-compartment model with first-order elimination from the central compartment. The mean total body plasma clearance was 95.7 +/- 30.8 m/min and the harmonic mean terminal half-life was 3.6 h.
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Affiliation(s)
- Christopher R Gibson
- College of Pharmacy, Department of Pathology, The Ohio State University, Columbus 43210, USA
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Goodman JH, Yang W, Barth RF, Gao Z, Boesel CP, Staubus AE, Gupta N, Gahbauer RA, Adams DM, Gibson CR, Ferketich AK, Moeschberger ML, Soloway AH, Carpenter DE, Albertson BJ, Bauer WF, Zhang MZ, Wang CC. Boron Neutron Capture Therapy of Brain Tumors: Biodistribution, Pharmacokinetics, and Radiation Dosimetry of Sodium Borocaptate in Patients with Gliomas. Neurosurgery 2000. [DOI: 10.1227/00006123-200009000-00016] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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Goodman JH, Yang W, Barth RF, Gao Z, Boesel CP, Staubus AE, Gupta N, Gahbauer RA, Adams DM, Gibson CR, Ferketich AK, Moeschberger ML, Soloway AH, Carpenter DE, Albertson BJ, Bauer WF, Zhang MZ, Wang CC. Boron neutron capture therapy of brain tumors: biodistribution, pharmacokinetics, and radiation dosimetry sodium borocaptate in patients with gliomas. Neurosurgery 2000; 47:608-21; discussion 621-2. [PMID: 10981748 DOI: 10.1097/00006123-200009000-00016] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
OBJECTIVE The purpose of this study was to obtain tumor and normal brain tissue biodistribution data and pharmacokinetic profiles for sodium borocaptate (Na2B12H11SH) (BSH), a drug that has been used clinically in Europe and Japan for boron neutron capture therapy of brain tumors. The study was performed with a group of 25 patients who had preoperative diagnoses of either glioblastoma multiforme (GBM) or anaplastic astrocytoma (AA) and were candidates for debulking surgery. Nineteen of these patients were subsequently shown to have histopathologically confirmed diagnoses of GBM or AA, and they constituted the study population. METHODS BSH (non-10B-enriched) was infused intravenously, in a 1-hour period, at doses of 15, 25, and 50 mg boron/kg body weight (corresponding to 26.5, 44.1, and 88.2 mg BSH/kg body weight, respectively) to groups of 3, 3, and 13 patients, respectively. Multiple samples of tumor tissue, brain tissue around the tumors, and normal brain tissue were obtained at either 3 to 7 or 13 to 15 hours after infusion. Blood samples for pharmacokinetic studies were obtained at times up to 120 hours after termination of the infusion. Sixteen of the patients underwent surgery at the Beijing Neurosurgical Institute and three at The Ohio State University, where all tissue samples were subsequently analyzed for boron content by direct current plasma-atomic emission spectroscopy. RESULTS Blood boron values peaked at the end of the infusion and then decreased triexponentially during the 120-hour sampling period. At 6 hours after termination of the infusion, these values had decreased to 20.8, 29.1, and 62.6 microg/ml for boron doses of 15, 25, and 50 mg/kg body weight, respectively. For a boron dose of 50 mg/kg body weight, the maximum (mean +/- standard deviation) solid tumor boron values at 3 to 7 hours after infusion were 17.1+/-5.8 and 17.3+/-10.1 microg/g for GBMs and AAs, respectively, and the mean tumor value averaged across all samples was 11.9 microg/g for both GBMs and AAs. In contrast, the mean normal brain tissue values, averaged across all samples, were 4.6+/-5.1 and 5.5+/-3.9 microg/g and the tumor/normal brain tissue ratios were3.8 and 3.2 for patients with GBMs and AAs, respectively. The large standard deviations indicated significant heterogeneity in uptake in both tumor and normal brain tissue. Regions histopathologically classified either as a mixture of tumor and normal brain tissue or as infiltrating tumor exhibited slightly lower boron concentrations than those designated as solid tumor. After a dose of 50 mg/kg body weight, boron concentrations in blood decreased from 104 microg/ml at 2 hours to 63 microg/ml at 6 hours and concentrations in skin and muscle were 43.1 and 39.2 microg/g, respectively, during the 3- to 7-hour sampling period. CONCLUSION When tumor, blood, and normal tissue boron concentrations were taken into account, the most favorable tumor uptake data were obtained with a boron dose of 25 mg/kg body weight, 3 to 7 hours after termination of the infusion. Although blood boron levels were high, normal brain tissue boron levels were almost always lower than tumor levels. However, tumor boron concentrations were less than those necessary for boron neutron capture therapy, and there was significant intratumoral and interpatient variability in the uptake of BSH, which would make estimation of the radiation dose delivered to the tumor very difficult. It is unlikely that intravenous administration of a single dose of BSH would result in therapeutically useful levels of boron. However, combining BSH with boronophenylalanine, the other compound that has been used clinically, and optimizing their delivery could increase tumor boron uptake and potentially improve the efficacy of boron neutron capture therapy.
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Affiliation(s)
- J H Goodman
- Division of Neurological Surgery, School of Public Health, The Ohio State University, Columbus 43210, USA
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