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      Prolonged survival in secondary glioblastoma following local injection of targeted alpha therapy with 213Bi-substance P analogue

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          Abstract

          Background

          Glioblastoma multiforme (GBM), the most common malignant brain tumor, mainly manifests as a primary de novo and less frequently as a secondary glial neoplasm. GBM has been demonstrated to overexpress the NK-1 receptor and substance P can be used as a ligand for targeted therapy. Alpha emitters, e.g. 213Bi, that deposit their high energy within a short range allow the selective irradiation of tumor cells while sparing adjacent neuronal structures.

          Material and methods

          Among 50 glioma patients of different subtypes that have to date been treated with targeted alpha therapy at the Medical University Warsaw, we report here the data on nine patients with secondary GBM. Following surgery, chemo- and radiotherapy, recurrent GBM was treated by intracavitary injection of 1–6 doses of 0.9–2.3 GBq 213Bi- DOTA-[Thi 8,Met(O 2) 11]-substance P ( 213Bi-DOTA-SP) in 2-month intervals. 68Ga-DOTA-[Thi 8,Met(O 2) 11]-substance P ( 68Ga-DOTA-SP) was co-injected with the therapeutic doses to assess biodistribution using PET/CT. Therapeutic response was monitored with MRI.

          Results

          Treatment with activities ranging from 1.4 to 9.7 (median 5.8) GBq 213Bi- DOTA-SP was well tolerated with only mild transient adverse reactions, mainly headaches due to a transient perfocal edema reaction. The median progression free survival and overall survival time following the initiation of alpha therapy was 5.8 and 16.4 months, respectively. The median overall survival time from the first diagnosis was 52.3 months. Two out of nine patients are still alive 39 and 51 months, respectively, after the initiation of the therapy.

          Conclusions

          Targeted alpha therapy of secondary GBM with 213Bi-DOTA-SP is safe and well tolerated and may evolve as a promising novel therapeutic option for secondary GBM.

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          Most cited references30

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          Genetic pathways to glioblastoma: a population-based study.

          We conducted a population-based study on glioblastomas in the Canton of Zurich, Switzerland (population, 1.16 million) to determine the frequency of major genetic alterations and their effect on patient survival. Between 1980 and 1994, 715 glioblastomas were diagnosed. The incidence rate per 100,000 population/year, adjusted to the World Standard Population, was 3.32 in males and 2.24 in females. Observed survival rates were 42.4% at 6 months, 17.7% at 1 year, and 3.3% at 2 years. For all of the age groups, younger patients survived significantly longer, ranging from a median of 8.8 months ( 80 years). Loss of heterozygosity (LOH) 10q was the most frequent genetic alteration (69%), followed by EGFR amplification (34%), TP53 mutations (31%), p16(INK4a) deletion (31%), and PTEN mutations (24%). LOH 10q occurred in association with any of the other genetic alterations and was predictive of shorter survival. Primary (de novo) glioblastomas prevailed (95%), whereas secondary glioblastomas that progressed from low-grade or anaplastic gliomas were rare (5%). Secondary glioblastomas were characterized by frequent LOH 10q (63%) and TP53 mutations (65%). Of the TP53 mutations in secondary glioblastomas, 57% were in hotspot codons 248 and 273, whereas in primary glioblastomas, mutations were more equally distributed. G:C-->A:T mutations at CpG sites were more frequent in secondary than primary glioblastomas (56% versus 30%; P = 0.0208). This suggests that the acquisition of TP53 mutations in these glioblastoma subtypes occurs through different mechanisms.
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            A phase II study of temozolomide vs. procarbazine in patients with glioblastoma multiforme at first relapse

            A randomized, multicentre, open-label, phase II study compared temozolomide (TMZ), an oral second-generation alkylating agent, and procarbazine (PCB) in 225 patients with glioblastoma multiforme at first relapse. Primary objectives were to determine progression-free survival (PFS) at 6 months and safety for TMZ and PCB in adult patients who failed conventional treatment. Secondary objectives were to assess overall survival and health-related quality of life (HRQL). TMZ was given orally at 200 mg/m2/day or 150 mg/m2/day (prior chemotherapy) for 5 days, repeated every 28 days. PCB was given orally at 150 mg/m2/day or 125 mg/m2/day (prior chemotherapy) for 28 days, repeated every 56 days. HRQL was assessed using the European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30 [+3]) and the Brain Cancer Module 20 (BCM20). The 6-month PFS rate for patients who received TMZ was 21%, which met the protocol objective. The 6-month PFS rate for those who received PCB was 8% (P = 0.008, for the comparison). Overall PFS significantly improved with TMZ, with a median PFS of 12.4 weeks in the TMZ group and 8.32 weeks in the PCB group (P = 0.0063). The 6-month overall survival rate for TMZ patients was 60% vs. 44% for PCB patients (P = 0.019). Freedom from disease progression was associated with maintenance of HRQL, regardless of treatment received. TMZ had an acceptable safety profile; most adverse events were mild or moderate in severity. © 2000 Cancer Research Campaign
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              Progression-free survival: an important end point in evaluating therapy for recurrent high-grade gliomas.

              The North American Brain Tumor Consortium (NABTC) uses 6-month progression-free survival (6moPFS) as the efficacy end point of therapy trials for adult patients with recurrent high-grade gliomas. In this study, we investigated whether progression status at 6 months predicts survival from that time, implying the potential for prolonged survival if progression could be delayed. We also evaluated earlier time points to determine whether the time of progression assessment alters the strength of the prediction. Data were from 596 patient enrollments (159 with grade III gliomas and 437 with grade IV tumors) in NABTC phase II protocols between February 1998 and December 2002. Outcome was assessed statistically using Kaplan-Meier curves and Cox proportional hazards models. Median survivals were 39 and 30 weeks for patients with grade III and grade IV tumors, respectively. Twenty-eight percent of patients with grade III and 16% of patients with grade IV tumors had progression-free survival of >26 weeks. Progression status at 9, 18, and 26 weeks predicted survival from those times for patients with grade III or grade IV tumors (p < 0.001 and hazard ratios < 0.5 in all cases). Including KPS, age, number of prior chemotherapies, and response in a multivariate model did not substantively change the results. Progression status at 6 months is a strong predictor of survival, and 6moPFS is a valid end point for trials of therapy for recurrent malignant glioma. Earlier assessments of progression status also predicted survival and may be incorporated in the design of future clinical trials.
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                Author and article information

                Contributors
                +48 22 599 22 70 , jolanta.kunikowska@wum.edu.p
                Journal
                Eur J Nucl Med Mol Imaging
                Eur. J. Nucl. Med. Mol. Imaging
                European Journal of Nuclear Medicine and Molecular Imaging
                Springer Berlin Heidelberg (Berlin/Heidelberg )
                1619-7070
                1619-7089
                30 April 2018
                30 April 2018
                2018
                : 45
                : 9
                : 1636-1644
                Affiliations
                [1 ]ISNI 0000000113287408, GRID grid.13339.3b, Department of Nuclear Medicine, , Medical University of Warsaw, ; ul. Banacha 1 a, 02-097 Warsaw, Poland
                [2 ]GRID grid.443865.8, European Commission, Joint Research Centre, Directorate for Nuclear Safety and Security, ; Karlsruhe, Germany
                [3 ]ISNI 0000 0001 2237 2890, GRID grid.418955.4, Department of Neurosurgery, , Institute of Psychiatry and Neurology, ; Warsaw, Poland
                [4 ]Department of Nuclear Medicine, Brodnowski Hospital, Warsaw, Poland
                [5 ]ISNI 0000 0001 0941 0848, GRID grid.450295.f, Radioisotope Centre POLATOM, , National Centre for Nuclear Research, ; Otwock, Poland
                [6 ]ISNI 0000 0004 0446 2659, GRID grid.135519.a, Nuclear and Radiochemistry Group, Nuclear Security and Isotope Technology Division, , Oak Ridge National Laboratory, ; Oak Ridge, TN 38731-6229 USA
                [7 ]ISNI 0000 0001 1371 2275, GRID grid.418696.4, Department of Neurology, , Military Institute of Aviation Medicine, ; Warsaw, Poland
                [8 ]ISNI 0000 0001 0726 5157, GRID grid.5734.5, Neurosurgery, , Bern and University of Basel, ; Spitalgasse 32, Bern, Switzerland
                Article
                4015
                10.1007/s00259-018-4015-2
                6061489
                29713762
                12134c32-39b6-4021-a0e6-ac89d37a9bd5
                © The Author(s) 2018

                Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

                History
                : 5 December 2017
                : 9 April 2018
                Categories
                Original Article
                Custom metadata
                © Springer-Verlag GmbH Germany, part of Springer Nature 2018

                Radiology & Imaging
                glioblastoma,gbm,213bi-dota-sp,68ga-dota-sp,targeted alpha therapy,substance p
                Radiology & Imaging
                glioblastoma, gbm, 213bi-dota-sp, 68ga-dota-sp, targeted alpha therapy, substance p

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