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Stepien N, Mayr L, Schmook MT, Raimann A, Dorfer C, Peyrl A, Azizi AA, Schramm K, Haberler C, Gojo J. Feasibility and antitumour activity of the FGFR inhibitor erdafitnib in three paediatric CNS tumour patients. Pediatr Blood Cancer 2024; 71:e30836. [PMID: 38177074 DOI: 10.1002/pbc.30836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 12/07/2023] [Accepted: 12/18/2023] [Indexed: 01/06/2024]
Abstract
Alterations of the fibroblast growth factor (FGF) signalling pathway are increasingly recognized as frequent oncogenic drivers of paediatric brain tumours. We report on three patients treated with the selective FGFR1-4 inhibitor erdafitinib. Two patients were diagnosed with a posterior fossa ependymoma group A (PFA EPN) and one with a low-grade glioma (LGG), harbouring FGFR3/FGFR1 overexpression and an FGFR1 internal tandem duplication (ITD), respectively. While both EPN patients did not respond to erdafitinib treatment, the FGFR1-ITD-harbouring tumour showed a significant decrease in tumour volume and contrast enhancement throughout treatment. The tumour remained stable 6 months after treatment discontinuation.
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Affiliation(s)
- Natalia Stepien
- Department of Pediatrics and Adolescent Medicine, Comprehensive Center for Pediatrics and Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
| | - Lisa Mayr
- Department of Pediatrics and Adolescent Medicine, Comprehensive Center for Pediatrics and Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
| | - Maria T Schmook
- Division of Neuroradiology and Musculoskeletal Radiology, Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Vienna, Austria
| | - Adalbert Raimann
- Clinical Division of Pediatric Pulmonology, Allergology and Endocrinology, Department of Pediatrics and Adolescent Medicine, Comprehensive Center for Pediatrics, Vienna Bone and Growth Center, Medical University of Vienna, Vienna, Austria
| | - Christian Dorfer
- Department of Neurosurgery, Medical University of Vienna, Vienna, Austria
| | - Andreas Peyrl
- Department of Pediatrics and Adolescent Medicine, Comprehensive Center for Pediatrics and Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
| | - Amedeo A Azizi
- Department of Pediatrics and Adolescent Medicine, Comprehensive Center for Pediatrics and Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
| | - Kathrin Schramm
- Hopp Children's Cancer Center Heidelberg (KiTZ), Heidelberg, Germany
- Division of Pediatric Glioma Research (B360), German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Christine Haberler
- Department of Neurology, Division of Neuropathology and Neurochemistry, Medical University of Vienna, Vienna, Austria
| | - Johannes Gojo
- Department of Pediatrics and Adolescent Medicine, Comprehensive Center for Pediatrics and Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
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Lötsch D, Kirchhofer D, Englinger B, Jiang L, Okonechnikov K, Senfter D, Laemmerer A, Gabler L, Pirker C, Donson AM, Bannauer P, Korbel P, Jaunecker CN, Hübner JM, Mayr L, Madlener S, Schmook MT, Ricken G, Maaß K, Grusch M, Holzmann K, Grasl-Kraupp B, Spiegl-Kreinecker S, Hsu J, Dorfer C, Rössler K, Azizi AA, Foreman NK, Peyrl A, Haberler C, Czech T, Slavc I, Filbin MG, Pajtler KW, Kool M, Berger W, Gojo J. Targeting fibroblast growth factor receptors to combat aggressive ependymoma. Acta Neuropathol 2021; 142:339-360. [PMID: 34046693 PMCID: PMC8270873 DOI: 10.1007/s00401-021-02327-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 04/10/2021] [Accepted: 05/10/2021] [Indexed: 12/16/2022]
Abstract
Ependymomas (EPN) are central nervous system tumors comprising both aggressive and more benign molecular subtypes. However, therapy of the high-risk subtypes posterior fossa group A (PF-A) and supratentorial RELA-fusion positive (ST-RELA) is limited to gross total resection and radiotherapy, as effective systemic treatment concepts are still lacking. We have recently described fibroblast growth factor receptors 1 and 3 (FGFR1/FGFR3) as oncogenic drivers of EPN. However, the underlying molecular mechanisms and their potential as therapeutic targets have not yet been investigated in detail. Making use of transcriptomic data across 467 EPN tissues, we found that FGFR1 and FGFR3 were both widely expressed across all molecular groups. FGFR3 mRNA levels were enriched in ST-RELA showing the highest expression among EPN as well as other brain tumors. We further identified high expression levels of fibroblast growth factor 1 and 2 (FGF1, FGF2) across all EPN subtypes while FGF9 was elevated in ST-EPN. Interrogation of our EPN single-cell RNA-sequencing data revealed that FGFR3 was further enriched in cycling and progenitor-like cell populations. Corroboratively, we found FGFR3 to be predominantly expressed in radial glia cells in both mouse embryonal and human brain datasets. Moreover, we detected alternative splicing of the FGFR1/3-IIIc variant, which is known to enhance ligand affinity and FGFR signaling. Dominant-negative interruption of FGFR1/3 activation in PF-A and ST-RELA cell models demonstrated inhibition of key oncogenic pathways leading to reduced cell growth and stem cell characteristics. To explore the feasibility of therapeutically targeting FGFR, we tested a panel of FGFR inhibitors in 12 patient-derived EPN cell models revealing sensitivity in the low-micromolar to nano-molar range. Finally, we gain the first clinical evidence for the activity of the FGFR inhibitor nintedanib in the treatment of a patient with recurrent ST-RELA. Together, these preclinical and clinical data suggest FGFR inhibition as a novel and feasible approach to combat aggressive EPN.
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MESH Headings
- Animals
- Central Nervous System Neoplasms/genetics
- Central Nervous System Neoplasms/pathology
- Ependymoma/genetics
- Ependymoma/pathology
- Humans
- Mice
- Neoplasm Recurrence, Local/genetics
- Neoplasm Recurrence, Local/metabolism
- Neoplasm Recurrence, Local/pathology
- Receptor, Fibroblast Growth Factor, Type 1/genetics
- Receptor, Fibroblast Growth Factor, Type 1/metabolism
- Receptor, Fibroblast Growth Factor, Type 3/metabolism
- Receptors, Fibroblast Growth Factor/genetics
- Receptors, Fibroblast Growth Factor/metabolism
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Affiliation(s)
- Daniela Lötsch
- Department of Neurosurgery, Medical University of Vienna, Vienna, Austria
- Department of Medicine I, Institute of Cancer Research and Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
- Department of Pediatrics and Adolescent Medicine and Comprehensive Center for Pediatrics, Medical University of Vienna, Vienna, Austria
| | - Dominik Kirchhofer
- Department of Medicine I, Institute of Cancer Research and Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
- Department of Pediatrics and Adolescent Medicine and Comprehensive Center for Pediatrics, Medical University of Vienna, Vienna, Austria
| | - Bernhard Englinger
- Department of Medicine I, Institute of Cancer Research and Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
- Department of Pediatric Oncology, Dana-Farber Boston Children's Cancer and Blood Disorders Center, Boston, MA, USA
- Broad Institute of Harvard and MIT, Cambridge, USA
| | - Li Jiang
- Department of Pediatric Oncology, Dana-Farber Boston Children's Cancer and Blood Disorders Center, Boston, MA, USA
- Broad Institute of Harvard and MIT, Cambridge, USA
| | - Konstantin Okonechnikov
- Hopp Children's Cancer Center (KiTZ), Heidelberg, Germany
- Division of Pediatric Neurooncology, German Cancer Research Center (DKFZ), German Cancer Consortium (DKTK), Heidelberg, Germany
| | - Daniel Senfter
- Department of Pediatrics and Adolescent Medicine and Comprehensive Center for Pediatrics, Medical University of Vienna, Vienna, Austria
- Hopp Children's Cancer Center (KiTZ), Heidelberg, Germany
- Division of Pediatric Neurooncology, German Cancer Research Center (DKFZ), German Cancer Consortium (DKTK), Heidelberg, Germany
| | - Anna Laemmerer
- Department of Medicine I, Institute of Cancer Research and Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
- Department of Pediatrics and Adolescent Medicine and Comprehensive Center for Pediatrics, Medical University of Vienna, Vienna, Austria
| | - Lisa Gabler
- Department of Medicine I, Institute of Cancer Research and Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
| | - Christine Pirker
- Department of Medicine I, Institute of Cancer Research and Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
| | - Andrew M Donson
- Morgan Adams Foundation Pediatric Brain Tumor Research Program, Children's Hospital Colorado, Aurora, CO, USA
- Department of Pediatrics, University of Colorado Denver, Aurora, CO, USA
| | - Peter Bannauer
- Department of Medicine I, Institute of Cancer Research and Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
- Department of Pediatrics and Adolescent Medicine and Comprehensive Center for Pediatrics, Medical University of Vienna, Vienna, Austria
| | - Pia Korbel
- Department of Medicine I, Institute of Cancer Research and Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
- Department of Pediatrics and Adolescent Medicine and Comprehensive Center for Pediatrics, Medical University of Vienna, Vienna, Austria
| | - Carola N Jaunecker
- Department of Medicine I, Institute of Cancer Research and Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
- Department of Pediatrics and Adolescent Medicine and Comprehensive Center for Pediatrics, Medical University of Vienna, Vienna, Austria
| | - Jens-Martin Hübner
- Hopp Children's Cancer Center (KiTZ), Heidelberg, Germany
- Division of Pediatric Neurooncology, German Cancer Research Center (DKFZ), German Cancer Consortium (DKTK), Heidelberg, Germany
| | - Lisa Mayr
- Department of Pediatrics and Adolescent Medicine and Comprehensive Center for Pediatrics, Medical University of Vienna, Vienna, Austria
| | - Sibylle Madlener
- Department of Pediatrics and Adolescent Medicine and Comprehensive Center for Pediatrics, Medical University of Vienna, Vienna, Austria
| | - Maria T Schmook
- Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Vienna, Austria
| | - Gerda Ricken
- Division of Neuropathology and Neurochemistry, Department of Neurology, Medical University of Vienna, Vienna, Austria
| | - Kendra Maaß
- Hopp Children's Cancer Center (KiTZ), Heidelberg, Germany
- Division of Pediatric Neurooncology, German Cancer Research Center (DKFZ), German Cancer Consortium (DKTK), Heidelberg, Germany
| | - Michael Grusch
- Department of Medicine I, Institute of Cancer Research and Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
| | - Klaus Holzmann
- Department of Medicine I, Institute of Cancer Research and Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
| | - Bettina Grasl-Kraupp
- Department of Medicine I, Institute of Cancer Research and Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
| | - Sabine Spiegl-Kreinecker
- Department of Neurosurgery, Kepler University Hospital GmbH, Johannes Kepler University, Linz, Austria
| | - Jennifer Hsu
- Department of Medicine I, Institute of Cancer Research and Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
| | - Christian Dorfer
- Department of Neurosurgery, Medical University of Vienna, Vienna, Austria
| | - Karl Rössler
- Department of Neurosurgery, Medical University of Vienna, Vienna, Austria
| | - Amedeo A Azizi
- Department of Pediatrics and Adolescent Medicine and Comprehensive Center for Pediatrics, Medical University of Vienna, Vienna, Austria
| | - Nicholas K Foreman
- Morgan Adams Foundation Pediatric Brain Tumor Research Program, Children's Hospital Colorado, Aurora, CO, USA
- Department of Pediatrics, University of Colorado Denver, Aurora, CO, USA
| | - Andreas Peyrl
- Department of Pediatrics and Adolescent Medicine and Comprehensive Center for Pediatrics, Medical University of Vienna, Vienna, Austria
| | - Christine Haberler
- Division of Neuropathology and Neurochemistry, Department of Neurology, Medical University of Vienna, Vienna, Austria
| | - Thomas Czech
- Department of Neurosurgery, Medical University of Vienna, Vienna, Austria
| | - Irene Slavc
- Department of Pediatrics and Adolescent Medicine and Comprehensive Center for Pediatrics, Medical University of Vienna, Vienna, Austria
| | - Mariella G Filbin
- Department of Pediatric Oncology, Dana-Farber Boston Children's Cancer and Blood Disorders Center, Boston, MA, USA
- Broad Institute of Harvard and MIT, Cambridge, USA
| | - Kristian W Pajtler
- Hopp Children's Cancer Center (KiTZ), Heidelberg, Germany
- Division of Pediatric Neurooncology, German Cancer Research Center (DKFZ), German Cancer Consortium (DKTK), Heidelberg, Germany
- Department of Pediatric Haematology and Oncology, Heidelberg University Hospital, Heidelberg, Germany
| | - Marcel Kool
- Hopp Children's Cancer Center (KiTZ), Heidelberg, Germany
- Division of Pediatric Neurooncology, German Cancer Research Center (DKFZ), German Cancer Consortium (DKTK), Heidelberg, Germany
- Princess Máxima Center for Pediatric Oncology, Utrecht, The Netherlands
| | - Walter Berger
- Department of Medicine I, Institute of Cancer Research and Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
| | - Johannes Gojo
- Department of Medicine I, Institute of Cancer Research and Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria.
- Department of Pediatrics and Adolescent Medicine and Comprehensive Center for Pediatrics, Medical University of Vienna, Vienna, Austria.
- Hopp Children's Cancer Center (KiTZ), Heidelberg, Germany.
- Division of Pediatric Neurooncology, German Cancer Research Center (DKFZ), German Cancer Consortium (DKTK), Heidelberg, Germany.
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3
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Baumgartner A, Stepien N, Mayr L, Madlener S, Dorfer C, Schmook MT, Traub-Weidinger T, Lötsch-Gojo D, Kirchhofer D, Reisinger D, Hedrich C, Arshad S, Irschik S, Boztug H, Engstler G, Bernkopf M, Rifatbegovic F, Höller C, Slavc I, Berger W, Müllauer L, Haberler C, Azizi AA, Peyrl A, Gojo J. Novel Insights into Diagnosis, Biology and Treatment of Primary Diffuse Leptomeningeal Melanomatosis. J Pers Med 2021; 11:292. [PMID: 33921303 PMCID: PMC8069125 DOI: 10.3390/jpm11040292] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Accepted: 04/08/2021] [Indexed: 12/17/2022] Open
Abstract
Primary diffuse leptomeningeal melanomatosis (PDLMM) is an extremely rare and aggressive cancer type for which best treatment strategies remain to be elucidated. Herein, we present current and prospective diagnostic strategies and treatment management of PDLMM. Against the background of an extensive literature review of published PDLMM cases and currently employed therapeutic strategies, we present an illustrative case of a pediatric patient suffering from PDLMM. We report the first case of a pediatric patient with PDLMM who received combination treatment including trametinib and everolimus, followed by intravenous nivolumab and ipilimumab with concomitant intensive intraventricular chemotherapy, resulting in temporary significant clinical improvement and overall survival of 7 months. Following this clinical experience, we performed a comprehensive literature review, identifying 26 additional cases. By these means, we provide insight into current knowledge on clinical and molecular characteristics of PDLMM. Analysis of these cases revealed that the unspecific clinical presentation, such as unrecognized increased intracranial pressure (present in 67%), is a frequent reason for the delay in diagnosis. Mortality remains substantial despite diverse therapeutic approaches with a median overall survival of 4 months from diagnosis. On the molecular level, to date, the only oncogenic driver reported so far is mutation of NRAS (n = 3), underlining a close biological relation to malignant melanoma and neurocutaneous melanosis. We further show, for the first time, that this somatic mutation can be exploited for cerebrospinal fluid liquid biopsy detection, revealing a novel potential biomarker for diagnosis and monitoring of PDLMM. Last, we use a unique patient derived PDLMM cell model to provide first insights into in vitro drug sensitivities. In summary, we provide future diagnostic and therapeutic guidance for PDLMM and first insights into the use of liquid biopsy and in vitro models for this orphan cancer type.
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Affiliation(s)
- Alicia Baumgartner
- Department of Pediatrics and Adolescent Medicine and Comprehensive Center for Pediatrics, Medical University of Vienna, 1090 Vienna, Austria; (A.B.); (N.S.); (L.M.); (S.M.); (D.R.); (C.H.); (S.A.); (S.I.); (I.S.); (A.A.A.); (A.P.)
| | - Natalia Stepien
- Department of Pediatrics and Adolescent Medicine and Comprehensive Center for Pediatrics, Medical University of Vienna, 1090 Vienna, Austria; (A.B.); (N.S.); (L.M.); (S.M.); (D.R.); (C.H.); (S.A.); (S.I.); (I.S.); (A.A.A.); (A.P.)
| | - Lisa Mayr
- Department of Pediatrics and Adolescent Medicine and Comprehensive Center for Pediatrics, Medical University of Vienna, 1090 Vienna, Austria; (A.B.); (N.S.); (L.M.); (S.M.); (D.R.); (C.H.); (S.A.); (S.I.); (I.S.); (A.A.A.); (A.P.)
- Comprehensive Cancer Center-Central Nervous System Tumors Unit, Medical University of Vienna, 1090 Vienna, Austria; (D.L.-G.); (W.B.)
- Institute of Cancer Research, Department of Medicine I, Medical University of Vienna, 1090 Vienna, Austria;
| | - Sibylle Madlener
- Department of Pediatrics and Adolescent Medicine and Comprehensive Center for Pediatrics, Medical University of Vienna, 1090 Vienna, Austria; (A.B.); (N.S.); (L.M.); (S.M.); (D.R.); (C.H.); (S.A.); (S.I.); (I.S.); (A.A.A.); (A.P.)
| | - Christian Dorfer
- Department of Neurosurgery, Medical University of Vienna, 1090 Vienna, Austria;
| | - Maria T. Schmook
- Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, 1090 Vienna, Austria; (M.T.S.); (T.T.-W.)
| | - Tatjana Traub-Weidinger
- Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, 1090 Vienna, Austria; (M.T.S.); (T.T.-W.)
| | - Daniela Lötsch-Gojo
- Comprehensive Cancer Center-Central Nervous System Tumors Unit, Medical University of Vienna, 1090 Vienna, Austria; (D.L.-G.); (W.B.)
- Institute of Cancer Research, Department of Medicine I, Medical University of Vienna, 1090 Vienna, Austria;
- Department of Neurosurgery, Medical University of Vienna, 1090 Vienna, Austria;
| | - Dominik Kirchhofer
- Institute of Cancer Research, Department of Medicine I, Medical University of Vienna, 1090 Vienna, Austria;
| | - Dominik Reisinger
- Department of Pediatrics and Adolescent Medicine and Comprehensive Center for Pediatrics, Medical University of Vienna, 1090 Vienna, Austria; (A.B.); (N.S.); (L.M.); (S.M.); (D.R.); (C.H.); (S.A.); (S.I.); (I.S.); (A.A.A.); (A.P.)
| | - Cora Hedrich
- Department of Pediatrics and Adolescent Medicine and Comprehensive Center for Pediatrics, Medical University of Vienna, 1090 Vienna, Austria; (A.B.); (N.S.); (L.M.); (S.M.); (D.R.); (C.H.); (S.A.); (S.I.); (I.S.); (A.A.A.); (A.P.)
| | - Saleha Arshad
- Department of Pediatrics and Adolescent Medicine and Comprehensive Center for Pediatrics, Medical University of Vienna, 1090 Vienna, Austria; (A.B.); (N.S.); (L.M.); (S.M.); (D.R.); (C.H.); (S.A.); (S.I.); (I.S.); (A.A.A.); (A.P.)
| | - Stefan Irschik
- Department of Pediatrics and Adolescent Medicine and Comprehensive Center for Pediatrics, Medical University of Vienna, 1090 Vienna, Austria; (A.B.); (N.S.); (L.M.); (S.M.); (D.R.); (C.H.); (S.A.); (S.I.); (I.S.); (A.A.A.); (A.P.)
| | - Heidrun Boztug
- Department of Pediatric Hematology and Oncology, St. Anna Children’s Hospital, Medical University of Vienna, 1090 Vienna, Austria; (H.B.); (G.E.)
| | - Gernot Engstler
- Department of Pediatric Hematology and Oncology, St. Anna Children’s Hospital, Medical University of Vienna, 1090 Vienna, Austria; (H.B.); (G.E.)
| | - Marie Bernkopf
- Children’s Cancer Research Institute, 1090 Vienna, Austria; (M.B.); (F.R.)
| | | | - Christoph Höller
- Department of Dermatology, Medical University of Vienna, 1090 Vienna, Austria;
| | - Irene Slavc
- Department of Pediatrics and Adolescent Medicine and Comprehensive Center for Pediatrics, Medical University of Vienna, 1090 Vienna, Austria; (A.B.); (N.S.); (L.M.); (S.M.); (D.R.); (C.H.); (S.A.); (S.I.); (I.S.); (A.A.A.); (A.P.)
| | - Walter Berger
- Comprehensive Cancer Center-Central Nervous System Tumors Unit, Medical University of Vienna, 1090 Vienna, Austria; (D.L.-G.); (W.B.)
- Institute of Cancer Research, Department of Medicine I, Medical University of Vienna, 1090 Vienna, Austria;
| | - Leonhard Müllauer
- Department of Pathology, Medical University of Vienna, 1090 Vienna, Austria;
| | - Christine Haberler
- Division of Neuropathology and Neurochemistry, Department of Neurology, Medical University of Vienna, 1090 Vienna, Austria;
| | - Amedeo A. Azizi
- Department of Pediatrics and Adolescent Medicine and Comprehensive Center for Pediatrics, Medical University of Vienna, 1090 Vienna, Austria; (A.B.); (N.S.); (L.M.); (S.M.); (D.R.); (C.H.); (S.A.); (S.I.); (I.S.); (A.A.A.); (A.P.)
| | - Andreas Peyrl
- Department of Pediatrics and Adolescent Medicine and Comprehensive Center for Pediatrics, Medical University of Vienna, 1090 Vienna, Austria; (A.B.); (N.S.); (L.M.); (S.M.); (D.R.); (C.H.); (S.A.); (S.I.); (I.S.); (A.A.A.); (A.P.)
| | - Johannes Gojo
- Department of Pediatrics and Adolescent Medicine and Comprehensive Center for Pediatrics, Medical University of Vienna, 1090 Vienna, Austria; (A.B.); (N.S.); (L.M.); (S.M.); (D.R.); (C.H.); (S.A.); (S.I.); (I.S.); (A.A.A.); (A.P.)
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4
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Mayr L, Guntner AS, Madlener S, Schmook MT, Peyrl A, Azizi AA, Dieckmann K, Reisinger D, Stepien NM, Schramm K, Laemmerer A, Jones DTW, Ecker J, Sahm F, Milde T, Pajtler KW, Blattner-Johnson M, Strbac M, Dorfer C, Czech T, Kirchhofer D, Gabler L, Berger W, Haberler C, Müllauer L, Buchberger W, Slavc I, Lötsch-Gojo D, Gojo J. Cerebrospinal Fluid Penetration and Combination Therapy of Entrectinib for Disseminated ROS1/NTRK-Fusion Positive Pediatric High-Grade Glioma. J Pers Med 2020; 10:E290. [PMID: 33353026 PMCID: PMC7766483 DOI: 10.3390/jpm10040290] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 12/15/2020] [Accepted: 12/16/2020] [Indexed: 12/20/2022] Open
Abstract
Targeting oncogenic fusion-genes in pediatric high-grade gliomas (pHGG) with entrectinib has emerged as a highly promising therapeutic approach. Despite ongoing clinical studies, to date, no reports on the treatment of cerebrospinal fluid (CSF) disseminated fusion-positive pHGG exist. Moreover, clinically important information of combination with other treatment modalities such as intrathecal therapy, radiotherapy and other targeted agents is missing. We report on our clinical experience of entrectinib therapy in two CSF disseminated ROS1/NTRK-fusion-positive pHGG cases. Combination of entrectinib with radiotherapy or intrathecal chemotherapy appears to be safe and has the potential to act synergistically with entrectinib treatment. In addition, we demonstrate CSF penetrance of entrectinib for the first time in patient samples suggesting target engagement even upon CSF dissemination. Moreover, in vitro analyses of two novel cell models derived from one case with NTRK-fusion revealed that combination therapy with either a MEK (trametinib) or a CDK4/6 (abemaciclib) inhibitor synergistically enhances entrectinib anticancer effects. In summary, our comprehensive study, including clinical experience, CSF penetrance and in vitro data on entrectinib therapy of NTRK/ROS1-fusion-positive pHGG, provides essential clinical and preclinical insights into the multimodal treatment of these highly aggressive tumors. Our data suggest that combined inhibition of NTRK/ROS1 and other therapeutic vulnerabilities enhances the antitumor effect, which should be followed-up in further preclinical and clinical studies.
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Affiliation(s)
- Lisa Mayr
- Department of Pediatrics and Adolescent Medicine and Comprehensive Center for Pediatrics, Medical University of Vienna, 1090 Vienna, Austria; (L.M.); (S.M.); (A.P.); (A.A.A.); (D.R.); (N.M.S.); (A.L.); (D.K.); (I.S.)
- Department of Medicine I, Institute of Cancer Research, Medical University of Vienna, 1090 Vienna, Austria; (L.G.); (W.B.)
- Comprehensive Cancer Center-Central Nervous System Tumors Unit, Medical University of Vienna, 1090 Vienna, Austria
| | - Armin S. Guntner
- Institute of Analytical Chemistry, Johannes Kepler University, 4020 Linz, Austria; (A.S.G.); (W.B.)
| | - Sibylle Madlener
- Department of Pediatrics and Adolescent Medicine and Comprehensive Center for Pediatrics, Medical University of Vienna, 1090 Vienna, Austria; (L.M.); (S.M.); (A.P.); (A.A.A.); (D.R.); (N.M.S.); (A.L.); (D.K.); (I.S.)
- Comprehensive Cancer Center-Central Nervous System Tumors Unit, Medical University of Vienna, 1090 Vienna, Austria
| | - Maria T. Schmook
- Division of Neuroradiology and Musculoskeletal Radiology, Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, 1090 Vienna, Austria;
| | - Andreas Peyrl
- Department of Pediatrics and Adolescent Medicine and Comprehensive Center for Pediatrics, Medical University of Vienna, 1090 Vienna, Austria; (L.M.); (S.M.); (A.P.); (A.A.A.); (D.R.); (N.M.S.); (A.L.); (D.K.); (I.S.)
| | - Amedeo A. Azizi
- Department of Pediatrics and Adolescent Medicine and Comprehensive Center for Pediatrics, Medical University of Vienna, 1090 Vienna, Austria; (L.M.); (S.M.); (A.P.); (A.A.A.); (D.R.); (N.M.S.); (A.L.); (D.K.); (I.S.)
| | - Karin Dieckmann
- Department of Radiotherapy, Medical University of Vienna, 1090 Vienna, Austria;
| | - Dominik Reisinger
- Department of Pediatrics and Adolescent Medicine and Comprehensive Center for Pediatrics, Medical University of Vienna, 1090 Vienna, Austria; (L.M.); (S.M.); (A.P.); (A.A.A.); (D.R.); (N.M.S.); (A.L.); (D.K.); (I.S.)
| | - Natalia M. Stepien
- Department of Pediatrics and Adolescent Medicine and Comprehensive Center for Pediatrics, Medical University of Vienna, 1090 Vienna, Austria; (L.M.); (S.M.); (A.P.); (A.A.A.); (D.R.); (N.M.S.); (A.L.); (D.K.); (I.S.)
| | - Kathrin Schramm
- Hopp Children’s Cancer Center Heidelberg (KiTZ), 69120 Heidelberg, Germany; (K.S.); (D.T.W.J.); (T.M.); (K.W.P.); (M.B.-J.)
- Pediatric Glioma Research Group, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
| | - Anna Laemmerer
- Department of Pediatrics and Adolescent Medicine and Comprehensive Center for Pediatrics, Medical University of Vienna, 1090 Vienna, Austria; (L.M.); (S.M.); (A.P.); (A.A.A.); (D.R.); (N.M.S.); (A.L.); (D.K.); (I.S.)
- Department of Medicine I, Institute of Cancer Research, Medical University of Vienna, 1090 Vienna, Austria; (L.G.); (W.B.)
- Comprehensive Cancer Center-Central Nervous System Tumors Unit, Medical University of Vienna, 1090 Vienna, Austria
| | - David T. W. Jones
- Hopp Children’s Cancer Center Heidelberg (KiTZ), 69120 Heidelberg, Germany; (K.S.); (D.T.W.J.); (T.M.); (K.W.P.); (M.B.-J.)
- Pediatric Glioma Research Group, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
| | - Jonas Ecker
- Clinical Cooperation Unit Pediatric Oncology, Hopp Children’s Cancer Center Heidelberg (KiTZ), 69120 Heidelberg, Germany;
| | - Felix Sahm
- Department of Neuropathology, Institute of Pathology, University Hospital Heidelberg, 69120 Heidelberg, Germany;
- Clinical Cooperation Unit Neuropathology, German Consortium for Translational Cancer Research (DKTK), German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
| | - Till Milde
- Hopp Children’s Cancer Center Heidelberg (KiTZ), 69120 Heidelberg, Germany; (K.S.); (D.T.W.J.); (T.M.); (K.W.P.); (M.B.-J.)
- Clinical Cooperation Unit Pediatric Oncology, Hopp Children’s Cancer Center Heidelberg (KiTZ), 69120 Heidelberg, Germany;
| | - Kristian W. Pajtler
- Hopp Children’s Cancer Center Heidelberg (KiTZ), 69120 Heidelberg, Germany; (K.S.); (D.T.W.J.); (T.M.); (K.W.P.); (M.B.-J.)
- Division of Pediatric Neurooncology, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
- Department of Pediatric Oncology, Hematology, and Immunology, University Hospital Heidelberg, 69120 Heidelberg, Germany
| | - Mirjam Blattner-Johnson
- Hopp Children’s Cancer Center Heidelberg (KiTZ), 69120 Heidelberg, Germany; (K.S.); (D.T.W.J.); (T.M.); (K.W.P.); (M.B.-J.)
- Pediatric Glioma Research Group, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
| | - Miroslav Strbac
- Department of Laboratory Medicine and Pathology, Tree Top Hospital, Hulhumale 23000, Maldives;
| | - Christian Dorfer
- Department of Neurosurgery, Medical University of Vienna, 1090 Vienna, Austria; (C.D.); (T.C.)
| | - Thomas Czech
- Department of Neurosurgery, Medical University of Vienna, 1090 Vienna, Austria; (C.D.); (T.C.)
| | - Dominik Kirchhofer
- Department of Pediatrics and Adolescent Medicine and Comprehensive Center for Pediatrics, Medical University of Vienna, 1090 Vienna, Austria; (L.M.); (S.M.); (A.P.); (A.A.A.); (D.R.); (N.M.S.); (A.L.); (D.K.); (I.S.)
- Department of Medicine I, Institute of Cancer Research, Medical University of Vienna, 1090 Vienna, Austria; (L.G.); (W.B.)
- Comprehensive Cancer Center-Central Nervous System Tumors Unit, Medical University of Vienna, 1090 Vienna, Austria
| | - Lisa Gabler
- Department of Medicine I, Institute of Cancer Research, Medical University of Vienna, 1090 Vienna, Austria; (L.G.); (W.B.)
- Comprehensive Cancer Center-Central Nervous System Tumors Unit, Medical University of Vienna, 1090 Vienna, Austria
| | - Walter Berger
- Department of Medicine I, Institute of Cancer Research, Medical University of Vienna, 1090 Vienna, Austria; (L.G.); (W.B.)
- Comprehensive Cancer Center-Central Nervous System Tumors Unit, Medical University of Vienna, 1090 Vienna, Austria
| | - Christine Haberler
- Division of Neuropathology and Neurochemistry, Department of Neurology, Medical University of Vienna, 1090 Vienna, Austria;
| | - Leonhard Müllauer
- Department of Pathology, Medical University of Vienna, 1090 Vienna, Austria;
| | - Wolfgang Buchberger
- Institute of Analytical Chemistry, Johannes Kepler University, 4020 Linz, Austria; (A.S.G.); (W.B.)
| | - Irene Slavc
- Department of Pediatrics and Adolescent Medicine and Comprehensive Center for Pediatrics, Medical University of Vienna, 1090 Vienna, Austria; (L.M.); (S.M.); (A.P.); (A.A.A.); (D.R.); (N.M.S.); (A.L.); (D.K.); (I.S.)
| | - Daniela Lötsch-Gojo
- Department of Medicine I, Institute of Cancer Research, Medical University of Vienna, 1090 Vienna, Austria; (L.G.); (W.B.)
- Comprehensive Cancer Center-Central Nervous System Tumors Unit, Medical University of Vienna, 1090 Vienna, Austria
- Department of Neurosurgery, Medical University of Vienna, 1090 Vienna, Austria; (C.D.); (T.C.)
| | - Johannes Gojo
- Department of Pediatrics and Adolescent Medicine and Comprehensive Center for Pediatrics, Medical University of Vienna, 1090 Vienna, Austria; (L.M.); (S.M.); (A.P.); (A.A.A.); (D.R.); (N.M.S.); (A.L.); (D.K.); (I.S.)
- Comprehensive Cancer Center-Central Nervous System Tumors Unit, Medical University of Vienna, 1090 Vienna, Austria
- Hopp Children’s Cancer Center Heidelberg (KiTZ), 69120 Heidelberg, Germany; (K.S.); (D.T.W.J.); (T.M.); (K.W.P.); (M.B.-J.)
- Division of Pediatric Neurooncology, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
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5
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Gojo J, Pavelka Z, Zapletalova D, Schmook MT, Mayr L, Madlener S, Kyr M, Vejmelkova K, Smrcka M, Czech T, Dorfer C, Skotakova J, Azizi AA, Chocholous M, Reisinger D, Lastovicka D, Valik D, Haberler C, Peyrl A, Noskova H, Pál K, Jezova M, Veselska R, Kozakova S, Slaby O, Slavc I, Sterba J. Personalized Treatment of H3K27M-Mutant Pediatric Diffuse Gliomas Provides Improved Therapeutic Opportunities. Front Oncol 2020; 9:1436. [PMID: 31998633 PMCID: PMC6965319 DOI: 10.3389/fonc.2019.01436] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Accepted: 12/03/2019] [Indexed: 12/21/2022] Open
Abstract
Diffuse gliomas with K27M histone mutations (H3K27M glioma) are generally characterized by a fatal prognosis, particularly affecting the pediatric population. Based on the molecular heterogeneity observed in this tumor type, personalized treatment is considered to substantially improve therapeutic options. Therefore, clinical evidence for therapy, guided by comprehensive molecular profiling, is urgently required. In this study, we analyzed feasibility and clinical outcomes in a cohort of 12 H3K27M glioma cases treated at two centers. Patients were subjected to personalized treatment either at primary diagnosis or disease progression and received backbone therapy including focal irradiation. Molecular analyses included whole-exome sequencing of tumor and germline DNA, RNA-sequencing, and transcriptomic profiling. Patients were monitored with regular clinical as well as radiological follow-up. In one case, liquid biopsy of cerebrospinal fluid (CSF) was used. Analyses could be completed in 83% (10/12) and subsequent personalized treatment for one or more additional pharmacological therapies could be recommended in 90% (9/10). Personalized treatment included inhibition of the PI3K/AKT/mTOR pathway (3/9), MAPK signaling (2/9), immunotherapy (2/9), receptor tyrosine kinase inhibition (2/9), and retinoic receptor agonist (1/9). The overall response rate within the cohort was 78% (7/9) including one complete remission, three partial responses, and three stable diseases. Sustained responses lasting for 28 to 150 weeks were observed for cases with PIK3CA mutations treated with either miltefosine or everolimus and additional treatment with trametinib/dabrafenib in a case with BRAFV600E mutation. Immune checkpoint inhibitor treatment of a case with increased tumor mutational burden (TMB) resulted in complete remission lasting 40 weeks. Median time to progression was 29 weeks. Median overall survival (OS) in the personalized treatment cohort was 16.5 months. Last, we compared OS to a control cohort (n = 9) showing a median OS of 17.5 months. No significant difference between the cohorts could be detected, but long-term survivors (>2 years) were only present in the personalized treatment cohort. Taken together, we present the first evidence of clinical efficacy and an improved patient outcome through a personalized approach at least in selected cases of H3K27M glioma.
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Affiliation(s)
- Johannes Gojo
- Department of Pediatrics and Adolescent Medicine and Comprehensive Center for Pediatrics, Medical University of Vienna, Vienna, Austria.,Comprehensive Cancer Center Vienna, Medical University of Vienna, Vienna, Austria
| | - Zdenek Pavelka
- Department of Pediatric Oncology, University Hospital Brno and Faculty of Medicine, Masaryk University, Brno, Czechia
| | - Danica Zapletalova
- Department of Pediatric Oncology, University Hospital Brno and Faculty of Medicine, Masaryk University, Brno, Czechia.,International Clinical Research Center, St. Anne's University Hospital, Brno, Czechia
| | - Maria T Schmook
- Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Vienna, Austria
| | - Lisa Mayr
- Department of Pediatrics and Adolescent Medicine and Comprehensive Center for Pediatrics, Medical University of Vienna, Vienna, Austria.,Comprehensive Cancer Center Vienna, Medical University of Vienna, Vienna, Austria
| | - Sibylle Madlener
- Department of Pediatrics and Adolescent Medicine and Comprehensive Center for Pediatrics, Medical University of Vienna, Vienna, Austria.,Comprehensive Cancer Center Vienna, Medical University of Vienna, Vienna, Austria
| | - Michal Kyr
- Department of Pediatric Oncology, University Hospital Brno and Faculty of Medicine, Masaryk University, Brno, Czechia.,International Clinical Research Center, St. Anne's University Hospital, Brno, Czechia
| | - Klara Vejmelkova
- Department of Pediatric Oncology, University Hospital Brno and Faculty of Medicine, Masaryk University, Brno, Czechia.,International Clinical Research Center, St. Anne's University Hospital, Brno, Czechia
| | - Martin Smrcka
- Department of Neurosurgery, University Hospital Brno and Faculty of Medicine, Masaryk University, Brno, Czechia
| | - Thomas Czech
- Comprehensive Cancer Center Vienna, Medical University of Vienna, Vienna, Austria.,Department of Neurosurgery, Medical University of Vienna, Vienna, Austria
| | - Christian Dorfer
- Comprehensive Cancer Center Vienna, Medical University of Vienna, Vienna, Austria.,Department of Neurosurgery, Medical University of Vienna, Vienna, Austria
| | - Jarmila Skotakova
- Department of Pediatric Radiology, University Hospital Brno and Faculty of Medicine, Masaryk University, Vienna, Czechia
| | - Amedeo A Azizi
- Department of Pediatrics and Adolescent Medicine and Comprehensive Center for Pediatrics, Medical University of Vienna, Vienna, Austria.,Comprehensive Cancer Center Vienna, Medical University of Vienna, Vienna, Austria
| | - Monika Chocholous
- Department of Pediatrics and Adolescent Medicine and Comprehensive Center for Pediatrics, Medical University of Vienna, Vienna, Austria.,Comprehensive Cancer Center Vienna, Medical University of Vienna, Vienna, Austria
| | - Dominik Reisinger
- Department of Pediatrics and Adolescent Medicine and Comprehensive Center for Pediatrics, Medical University of Vienna, Vienna, Austria.,Comprehensive Cancer Center Vienna, Medical University of Vienna, Vienna, Austria
| | - David Lastovicka
- Department of Neurosurgery, University Hospital Brno and Faculty of Medicine, Masaryk University, Brno, Czechia
| | - Dalibor Valik
- Regional Centre for Applied Molecular Oncology, Masaryk Memorial Cancer Institute, Brno, Czechia
| | | | - Andreas Peyrl
- Department of Pediatrics and Adolescent Medicine and Comprehensive Center for Pediatrics, Medical University of Vienna, Vienna, Austria.,Comprehensive Cancer Center Vienna, Medical University of Vienna, Vienna, Austria
| | - Hana Noskova
- Laboratory of Tumor Biology, Department of Experimental Biology, School of Science, Masaryk University, Brno, Czechia
| | - Karol Pál
- Central European Institute of Technology, Masaryk University, Brno, Czechia
| | - Marta Jezova
- Department of Pathology, Faculty Hospital Brno, Brno, Czechia
| | - Renata Veselska
- Laboratory of Tumor Biology, Department of Experimental Biology, School of Science, Masaryk University, Brno, Czechia
| | - Sarka Kozakova
- Regional Centre for Applied Molecular Oncology, Masaryk Memorial Cancer Institute, Brno, Czechia
| | - Ondrej Slaby
- Central European Institute of Technology, Masaryk University, Brno, Czechia.,Department of Pathology, Faculty Hospital Brno, Brno, Czechia
| | - Irene Slavc
- Department of Pediatrics and Adolescent Medicine and Comprehensive Center for Pediatrics, Medical University of Vienna, Vienna, Austria.,Comprehensive Cancer Center Vienna, Medical University of Vienna, Vienna, Austria
| | - Jaroslav Sterba
- Department of Pediatric Oncology, University Hospital Brno and Faculty of Medicine, Masaryk University, Brno, Czechia.,International Clinical Research Center, St. Anne's University Hospital, Brno, Czechia.,Regional Centre for Applied Molecular Oncology, Masaryk Memorial Cancer Institute, Brno, Czechia
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6
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Hojreh A, Gamper J, Schmook MT, Weber M, Prayer D, Herold CJ, Noebauer-Huhmann IM. Hand MRI and the Greulich-Pyle atlas in skeletal age estimation in adolescents. Skeletal Radiol 2018; 47:963-971. [PMID: 29372277 PMCID: PMC5960481 DOI: 10.1007/s00256-017-2867-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/15/2017] [Revised: 12/09/2017] [Accepted: 12/27/2017] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To evaluate the feasibility of hand MRI in age assessment in adolescents using the Greulich-Pyle (GP) atlas criteria. MATERIALS AND METHODS Two radiologists, who were blinded to the study subjects' chronologic ages, semi-objectively evaluated 1.5-T MRIs of the left hands of ten patients (13.5 ± 2.6 years) who had left-hand radiographs and 50 healthy volunteers (15 ± 2 years). RESULTS A coronal T1-weighted, volumetric, interpolated, breath-hold examination with water excitation (T1 VIBE-3D-WE) achieved the best image quality. The correlation between estimated patients' ages on radiographs and MRI was high. The average estimated age difference between the MRIs and radiographs was -0.05 years for reader 1 and -0.175 years for reader 2. The interclass coefficients (ICCs) showed high interobserver agreement (radiographs: ICC = 0.95, MRI: ICC = 0.97). The ICC, calculated separately for the male and female volunteers' estimated ages by MRI, also showed a high agreement between the two readers (male: ICC = 0.97, female: ICC = 0.95). Reader 1 estimated 94% of volunteers within 2 standard deviations (SD) and 62% within 1 SD. The results for reader 2 were 92% and 54%, respectively. Thirty-nine percent of girls and 27% of boys were estimated to be older using 1 SD. CONCLUSION MRI of the left hand is a feasible alternative to hand radiographs for skeletal age estimation in adolescents using the GP criteria with 2 SD. Using 1 SD, the age of healthy volunteers tended to be estimated as higher than the chronologic age. Future studies should evaluate the results in a larger number of participants.
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Affiliation(s)
- Azadeh Hojreh
- Department of Biological Imaging and Image-guided Therapy, Medical University of Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria
| | - Jutta Gamper
- Centre for Medical Statistics, Informatics and Intelligent Systems, Medical University of Vienna, Spitalgasse 23, 1090 Vienna, Austria
| | - Maria T. Schmook
- Department of Biological Imaging and Image-guided Therapy, Medical University of Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria
| | - Michael Weber
- Department of Biological Imaging and Image-guided Therapy, Medical University of Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria
| | - Daniela Prayer
- Department of Biological Imaging and Image-guided Therapy, Medical University of Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria
| | - Christian J. Herold
- Department of Biological Imaging and Image-guided Therapy, Medical University of Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria
| | - Iris-Melanie Noebauer-Huhmann
- Department of Biological Imaging and Image-guided Therapy, Medical University of Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria
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7
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Vodopiutz J, Schmook MT, Konstantopoulou V, Plecko B, Greber-Platzer S, Creus M, Seidl R, Janecke AR. MED20 mutation associated with infantile basal ganglia degeneration and brain atrophy. Eur J Pediatr 2015; 174:113-8. [PMID: 25446406 DOI: 10.1007/s00431-014-2463-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2014] [Revised: 11/15/2014] [Accepted: 11/19/2014] [Indexed: 12/01/2022]
Abstract
UNLABELLED Infantile movement disorders are rare and genetically heterogeneous. We set out to identify the disease-causing mutation in siblings with a novel recessive neurodegenerative movement disorder. Genetic linkage analysis and whole-exome sequencing were performed in the original family. A cohort of six unrelated patients were sequenced for further mutations in the identified candidate gene. Pathogenicity of the mutation was evaluated by in silico analyses and by structural modeling. We identified the first and homozygous mutation (p.Gly114Ala) in the Mediator subunit 20 gene (MED20) in siblings presenting with infantile-onset spasticity and childhood-onset dystonia, progressive basal ganglia degeneration, and brain atrophy. Mediator refers to an evolutionarily conserved multi-subunit RNA polymerase II co-regulatory complex. Pathogenicity of the identified missense mutation is suggested by in silico analyses, by structural modeling, and by previous reporting of mutations in four distinct Mediator subunits causing neurodegenerative phenotypes. No further MED20 mutations were detected in this study. CONCLUSION We delineate a novel infantile-onset neurodegenerative movement disorder and emphasize the Mediator complex as critical for normal neuronal function. Definitive proof of pathogenicity of the identified MED20 mutation will require confirmation in unrelated patients.
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Affiliation(s)
- Julia Vodopiutz
- Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Währinger Gürtel 18-20, 1090, Wien, Austria,
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8
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Schmook MT, Brugger PC, Weber M, Kasprian G, Nemec S, Krampl-Bettelheim E, Prayer D. Forebrain development in fetal MRI: evaluation of anatomical landmarks before gestational week 27. Neuroradiology 2010; 52:495-504. [DOI: 10.1007/s00234-010-0701-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2010] [Accepted: 03/30/2010] [Indexed: 11/29/2022]
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9
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Abstract
Recent technological advances in fetal magnetic resonance imaging (MRI) and increased reliability of MRI in depicting abnormalities and lesions, especially in the central nervous system, are increasingly bringing up challenging issues with regard to accurate diagnosis. There are also pitfalls not only attributable to image acquisition but also in clinical interpretation. The misinterpretation of findings because of insufficient knowledge about fetal brain development as visualized by MRI may also be regarded as an important limitation of fetal MRI. We provide an overview of the most common pitfalls experienced in fetal MRI in routine practice, demonstrate how to identify some of the factors that lead to imaging misinterpretation, and suggest ways to tackle these problems, with an emphasis on MR techniques and image calibration.
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Affiliation(s)
- Ali Al-Mukhtar
- Department of Radiology, Division of General and Pediatric Radiology, Medical University of Vienna, Vienna, Austria.
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10
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Ba-Ssalamah A, Schima W, Schmook MT, Linnau KF, Schibany N, Helbich T, Reimer P, Laengle F, Wrba F, Kurtaran A, Ryan M, Mann FA. Atypical focal nodular hyperplasia of the liver: imaging features of nonspecific and liver-specific MR contrast agents. AJR Am J Roentgenol 2002; 179:1447-56. [PMID: 12438034 DOI: 10.2214/ajr.179.6.1791447] [Citation(s) in RCA: 59] [Impact Index Per Article: 2.7] [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: 12/27/2022]
Abstract
OBJECTIVE The objective of our study was to describe the functional and differential uptake features of atypical focal nodular hyperplasia using different MR contrast agents and to evaluate their potential role in the diagnosis and characterization of focal nodular hyperplasia. MATERIALS AND METHODS Contrast-enhanced MR images of 45 patients with 85 focal nodular hyperplasia lesions were retrospectively reviewed. In these patients, sonographic findings were nonspecific (n = 37), or CT features were inconclusive (n = 8). Non-liver specific gadolinium chelates were used in 18 patients (48 lesions) suspected of having either focal nodular hyperplasia or hemangioma. The following liver-specific agents were used in patients with suspected focal nodular hyperplasia or metastases: mangafodipir trisodium, 30 patients (55 lesions); ferumoxides, six patients (16 lesions); and SHU 555 A, six patients (six lesions). Individual lesions were quantified by signal intensity and assessed qualitatively by homogeneity, contrast enhancement, and presence of a central scar. RESULTS At unenhanced MR imaging, the triad of homogeneity, isointensity, and central scar was found in 22% of the focal nodular hyperplasia lesions. On mangafodipir trisodium-enhanced T1-weighted images, all focal nodular hyperplasia lesions showed contrast uptake: in 64% of the lesions, uptake was equal to parenchyma; 25%, greater than the parenchyma; and 11%, less than the parenchyma. On iron oxide-enhanced T2-weighted images, all focal nodular hyperplasia lesions showed uptake of the contrast agent, but contrast uptake in the lesions was less than in the surrounding parenchyma. Dynamic gadolinium chelate-enhanced MR imaging showed early and vigorous enhancement of focal nodular hyperplasia lesions with rapid washout in 88%. Atypical imaging features of the lesions included hyperintensity on T1-weighted images, necrosis and hemorrhage, and inhomogeneous or only minimal contrast uptake. CONCLUSION For patients in whom the diagnosis of focal nodular hyperplasia cannot be established on unenhanced or gadolinium-enhanced MR imaging, homogeneous uptake of liver-specific contrast agent with better delineation of central scar may help to make a confident diagnosis of focal nodular hyperplasia.
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Affiliation(s)
- Ahmed Ba-Ssalamah
- Department of Radiology, University of Vienna, Waehringer Gürtel 18-20, A-1090 Vienna, Austria
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