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Vaz-Salgado MÁ, García BC, Pérez IF, Munárriz BJ, Domarco PS, González AH, Villar MV, Caro RL, Delgado MLV, Sánchez JMS. SEOM-GEINO clinical guidelines for grade 2 gliomas (2023). Clin Transl Oncol 2024:10.1007/s12094-024-03456-x. [PMID: 38662171 DOI: 10.1007/s12094-024-03456-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/08/2024] [Indexed: 04/26/2024]
Abstract
The 2021 World Health Organization (WHO) classification has updated the definition of grade 2 gliomas and the presence of isocitrate dehydrogenase (IDH) mutation has been deemed the cornerstone of diagnosis. Though slow-growing and having a low proliferative index, grade 2 gliomas are incurable by surgery and complementary treatments are vital to improving prognosis. This guideline provides recommendations on the multidisciplinary treatment of grade 2 astrocytomas and oligodendrogliomas based on the best evidence available.
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Affiliation(s)
- María Ángeles Vaz-Salgado
- Medical Oncology Department, Hospital Universitario Ramón y Cajal, Instituto Ramón y Cajal de Investigación Sanitaria (Irycis) CIBERONC, Madrid, Spain.
| | - Belén Cigarral García
- Medical Oncology Department, Complejo Asistencial Universitario de Salamanca, Salamanca, Spain
| | - Isaura Fernández Pérez
- Medical Oncology Department, Hospital Alvaro Cunqueiro-Complejo Hospitalario Universitario de Vigo, Pontevedra, Spain
| | | | - Paula Sampedro Domarco
- Medical Oncology Department, Complexo Hospitalario Universitario de Ourense (CHUO), Orense, Spain
| | - Ainhoa Hernández González
- Medical Oncology Department, Hospital Germans Trias I Pujol(ICO)-Badalona, Instituto Catalán de Oncología, Barcelona, Spain
| | - María Vieito Villar
- Medical Oncology Department, Hospital Universitario Vall D'Hebron, Barcelona, Spain
| | - Raquel Luque Caro
- Medical Oncology Department, Hospital Universitario Virgen de las Nieves, Instituto de Investigación Biosanitaria Ibs.Granada, Granada, Spain
| | | | - Juan Manuel Sepúlveda Sánchez
- Neuro-Oncology Unit, HM Universitario Sanchinarro-CIOCC, Madrid, Spain.
- Medical Oncology Department, Hospital Universitario 12 de Octubre, Instituto de Investigación 12 de Octubre (I+12), Madrid, Spain.
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Xie M, Wang X, Duan Z, Luan G. Low-grade epilepsy-associated neuroepithelial tumors: Tumor spectrum and diagnosis based on genetic alterations. Front Neurosci 2023; 16:1071314. [PMID: 36699536 PMCID: PMC9868944 DOI: 10.3389/fnins.2022.1071314] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2022] [Accepted: 12/12/2022] [Indexed: 01/12/2023] Open
Abstract
Brain tumors can always result in seizures when involving the cortical neurons or their circuits, and they were found to be one of the most common etiologies of intractable focal seizures. The low-grade epilepsy-associated neuroepithelial tumors (LEAT), as a special group of brain tumors associated with seizures, share common clinicopathological features, such as seizure onsets at a young age, a predilection for involving the temporal lobe, and an almost benign course, including a rather slow growth pattern and thus a long-term history of seizures. Ganglioglioma (GG) and dysembryoplastic neuroepithelial tumor (DNET) are the typical representatives of LEATs. Surgical treatments with complete resection of tumors and related epileptogenic zones are deemed the optimal way to achieve postoperative seizure control and lifetime recurrence-free survival in patients with LEATs. Although the term LEAT was originally introduced in 2003, debates on the tumor spectrum and the diagnosis or classification of LEAT entities are still confusing among epileptologists and neuropathologists. In this review, we would further discuss these questions, especially based on the updated classification of central nervous system tumors in the WHO fifth edition and the latest molecular genetic findings of tumor entities in LEAT entities.
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Affiliation(s)
- Mingguo Xie
- Department of Neurosurgery, Epilepsy Center, Sanbo Brain Hospital, Capital Medical University, Beijing, China,Beijing Key Laboratory of Epilepsy, Sanbo Brain Hospital, Capital Medical University, Beijing, China
| | - Xiongfei Wang
- Department of Neurosurgery, Epilepsy Center, Sanbo Brain Hospital, Capital Medical University, Beijing, China,Beijing Key Laboratory of Epilepsy, Sanbo Brain Hospital, Capital Medical University, Beijing, China
| | - Zejun Duan
- Department of Pathology, Sanbo Brain Hospital, Capital Medical University, Beijing, China
| | - Guoming Luan
- Department of Neurosurgery, Epilepsy Center, Sanbo Brain Hospital, Capital Medical University, Beijing, China,Beijing Key Laboratory of Epilepsy, Sanbo Brain Hospital, Capital Medical University, Beijing, China,Beijing Institute for Brain Disorders, Capital Medical University, Beijing, China,Chinese Institute for Brain Research, Beijing, China,*Correspondence: Guoming Luan,
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Lu Z, Chen Y, Chen S, Zhu X, Wang C, Wang Z, Yao Q. Comprehensive Prognostic Analysis of Immune Implication Value and Oxidative Stress Significance of NECAP2 in Low-Grade Glioma. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:1494520. [PMID: 36531205 PMCID: PMC9750773 DOI: 10.1155/2022/1494520] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 09/20/2022] [Accepted: 09/22/2022] [Indexed: 12/07/2023]
Abstract
Adaptin ear-binding coat-associated protein 2 (NECAP2) belongs to the family of proteins encoding adaptin-ear-binding coat-associated proteins. However, its immune effect on tumors and its microenvironment are still unclear. Here, we systematically evaluated the differences (variations) in NECAP2 expression for low-grade glioma (LGG) and pan-cancer in the LGG dataset of The Cancer Genome Atlas (TCGA) utilizing bioinformatics methods. We found for the first time that NECAP2 level was elevated in gliomas and that this upregulation increased as the tumor grade increased. In addition, Pearson correlations of NECAP2 with five immune pathways and significant gene mutations associated with NECAP2 were also analyzed. Univariate survival and multivariate Cox analyses were used to compare the clinical characteristics and survival of the patients. Glioma patients with NECAP2 overexpression have a remarkably higher risk of developing malignant behavior and a worse prognosis. The correlation between the expression levels of NECAP2 and the prognosis of glioma patients was identified. Kaplan-Meier curves showed that patients with upregulated NECAP2 expression exhibited an unfavorable prognosis. Western blotting showed that NECAP2 was overexpressed in glioma patients. IHC staining results illustrated an elevation in the NECAP2 protein expression level with the development of tumor malignancy. Additionally, qRT-PCR verified that oxidative stress in glioma tissues reduced the expression of stress-related genes and oxidative stress capacity compared to normal tissues, which may be associated with tumor evasion of immune surveillance and tumor progression. In vitro wound-healing and Transwell assay confirmed that NECAP2 promotes glioma cell migration and invasion. Our study also thoroughly examined the immune significance of NECAP2 in the TCGA-LGG samples, using CIBERSORT and ESTIMATE to explore the correlation between NECAP2 and cancer immune infiltration. The NECAP2 expression levels were correlated with the infiltration degree of immune cells such as neutrophils, CD4+ T cells, macrophages, CD8+ T cells, and B cells. Therefore, our results indicate that NECAP2 strongly correlates with the overall immune infiltration level of glioma and could independently serve as a prognostic biological marker for glioma patients.
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Affiliation(s)
- Zhichao Lu
- Department of Neurosurgery, Affiliated Hospital of Nantong University, Medical School of Nantong University, Nantong 226001, China
- Research Center of Clinical Medicine, Affiliated Hospital of Nantong University, Medical School of Nantong University, Nantong 226001, China
| | - Yixun Chen
- Research Center of Clinical Medicine, Affiliated Hospital of Nantong University, Medical School of Nantong University, Nantong 226001, China
| | - Siqi Chen
- Research Center of Clinical Medicine, Affiliated Hospital of Nantong University, Medical School of Nantong University, Nantong 226001, China
| | - Xingjia Zhu
- Department of Neurosurgery, Affiliated Hospital of Nantong University, Medical School of Nantong University, Nantong 226001, China
| | - Chenxing Wang
- Department of Neurosurgery, Affiliated Hospital of Nantong University, Medical School of Nantong University, Nantong 226001, China
- Research Center of Clinical Medicine, Affiliated Hospital of Nantong University, Medical School of Nantong University, Nantong 226001, China
| | - Ziheng Wang
- Department of Neurosurgery, Affiliated Hospital of Nantong University, Medical School of Nantong University, Nantong 226001, China
- Department of Clinical Biobank & Institute of Oncology, Affiliated Hospital of Nantong University, Medical School of Nantong University, Nantong 226001, China
- Centre for Precision Medicine Research and Training, Faculty of Health Sciences, University of Macau, Macau SAR, China
| | - Qi Yao
- Department of Neurosurgery, Affiliated Hospital of Nantong University, Medical School of Nantong University, Nantong 226001, China
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Prevalence of seizures in brain tumor: A meta-analysis. Epilepsy Res 2022; 187:107033. [DOI: 10.1016/j.eplepsyres.2022.107033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Revised: 09/28/2022] [Accepted: 10/06/2022] [Indexed: 11/24/2022]
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Correlation of Clinicopathological Factors with Brain Tumor-Related Epilepsy in Glioma. DISEASE MARKERS 2022; 2022:4918294. [PMID: 36246555 PMCID: PMC9553557 DOI: 10.1155/2022/4918294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/03/2022] [Revised: 08/03/2022] [Accepted: 09/09/2022] [Indexed: 11/18/2022]
Abstract
Objectives. Glioma patients with brain tumor-related epilepsy (BTRE) have a complex profile due to the simultaneous presence of two pathologies, glioma and epilepsy; however, they have not traditionally received as much attention as those with more malignant brain tumors. The underlying pathophysiology of brain tumor-related epilepsy remains poorly understood. The purpose of this study was to investigate the possible correlation between molecular neuropathology and glioma with BTRE and a wide range of BTRE-associated molecular markers of glioma patients. Methods. A retrospective cohort study of 186 glioma patients was evaluated at our hospital, of which 64 had BTRE. The chi-square test, Spearman rank correlation, and multivariate logistic analyses were used to identify clinicopathological factors associated with BTRE in glioma patients. Results. Of the 186 patients examined in this study, 64 (34.4%) had BTRE. Based on the analysis of the characteristics of these patients, the results showed that patient age (over 40 years;
), low WHO grade (grade I, II;
), IDH-1 positive mutation (
), low ATR-X expression level (
; 95% CI: 0.21, 0.92), and low Ki-67 PI (
; 95% CI: 0.10, 0.68) were associated with the occurrence of BTRE. In our cohort, BTRE patients did not differ by sex, tumor location, or expression of olig-2 and CD34. The results of the matching study showed that low Ki-67 PI and negative ATR-X expression levels were independent factors for a higher incidence of preoperative seizures in glioma patients. Conclusion. The current study updates existing information on genetic markers in gliomas with BTRE and explores the correlation of a wide range of clinicopathological factors and glioma patients with BTRE and suggests three putative biomarkers for BTRE: positive IDH1 mutation, low Ki-67 PI, and negative ATR-X expression. These factors may provide insights for developing a more thorough understanding of the pathogenesis of epilepsy and effective treatment strategies aimed at seizure control.
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Jo J, van den Bent MJ, Nabors B, Wen PY, Schiff D. Surveillance imaging frequency in adult patients with lower-grade (WHO Grade 2 and 3) gliomas. Neuro Oncol 2022; 24:1035-1047. [PMID: 35137214 PMCID: PMC9248400 DOI: 10.1093/neuonc/noac031] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
With improved outcome following aggressive treatment in patients with grade 2 and 3 IDH-mutant (IDHmt), 1p/19q codeleted oligodendroglioma and IDHmt, non-codeleted astrocytoma, prolonged surveillance is desirable for early detection of tumor growth and malignant transformation. Current National Comprehensive Cancer Network (NCCN) guidelines provide imaging follow-up recommendations based on molecular classification of lower-grade gliomas, although individualized imaging guidelines based on treatments received and after tumor recurrence are not clearly specified. Other available guidelines have yet to incorporate the molecular biomarkers that inform the WHO classification of gliomas, and in some cases do not adequately consider current knowledge on IDHmt glioma growth rate and recurrence patterns. Moreover, these guidelines also do not provide specific recommendations for concerning clinical symptoms or radiographic findings warranting imaging studies out of prespecified intervals. Focusing on molecularly defined grade 2 and 3 IDHmt astrocytomas and oligodendrogliomas, we review current knowledge of tumor growth rates and time to tumor progression for each tumor type and propose a range of recommended MRI surveillance intervals for both the newly diagnosed and recurrent tumor setting. Additionally, we summarize situations in which imaging is advisable outside of these intervals.
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Affiliation(s)
- Jasmin Jo
- Department of Internal Medicine, Division of Hematology and Oncology, East Carolina University, Greenville, North Carolina, USA
| | - Martin J van den Bent
- Department of Neuro-Oncology/Neurology, Erasmus MC Cancer Institute, Erasmus MC University Medical Center, Rotterdam, Netherland
| | - Burt Nabors
- Department of Neurology, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Patrick Y Wen
- Center for Neuro-Oncology, Dana-Farber/Brigham and Women’s Cancer Center; Division of Neuro-Oncology, Department of Neurology, Brigham and Women’s Hospital, and Harvard Medical School, Boston, Massachusetts, USA
| | - David Schiff
- Corresponding Author: David Schiff, MD, University of Virginia Neuro-Oncology Center, Box 800432 Charlottesville, VA 22908-0432, USA ()
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Seizures in patients with IDH-mutated lower grade gliomas. J Neurooncol 2022; 160:403-411. [PMID: 36258151 PMCID: PMC9722876 DOI: 10.1007/s11060-022-04158-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Accepted: 10/03/2022] [Indexed: 12/14/2022]
Abstract
PURPOSE Most patients with Lower Grade Gliomas (LGG) present with epileptic seizures. Since the advent of molecular diagnostics, more homogenous sub-entities have emerged, including the isocitrate dehydrogenase-mutated (IDH-mutated) astrocytomas and 1p19q-codeleted oligodendrogliomas. We aimed to describe the occurrence of seizures in patients with molecularly defined LGG pre- and postoperatively and to analyze factors affecting seizure status postoperatively. METHODS A population-based cohort of 130 adult patients with IDH-mutated WHO grade 2 or 3 astrocytomas and oligodendrogliomas was assessed pertaining to seizure burden before and after surgery. RESULTS Fifty-four (79.4%) patients with astrocytoma and 45 (72.6%) patients with oligodendroglioma had a history of seizures before surgery. At 12 months postoperatively, 51/67 (76.1%) patients with astrocytoma and 47/62 (75.8%) patients with oligodendrogliomas were seizure free. In a multivariable logistic regression analysis, lower extent of resection (EOR) (OR 0.98; 95% CI 0.97-1.00, p = 0.01) and insular tumor location (OR 5.02; 95% CI 1.01-24.87, p = 0.048) were associated with presence of seizures within 1 year postoperatively in the entire LGG cohort. In sub-entities, EOR was in a similar manner associated with seizures postoperatively in astrocytomas (OR 0.98; 95% CI 0.96-0.99, p < 0.01) but not in oligodendrogliomas (p = 0.34). CONCLUSION Our results are well in line with data published for non-molecularly defined LGG with a large proportion of patients being seizure free at 1 year postoperative. Better seizure outcome was observed with increased EOR in astrocytomas, but this association was absent in oligodendrogliomas.
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8
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Easwaran TP, Lancki N, Henriquez M, Vortmeyer AO, Barbaro NM, Scholtens DM, Ahmed AU, Dey M. Molecular Classification of Gliomas is Associated with Seizure Control: A Retrospective Analysis. Neuromolecular Med 2021; 23:315-326. [PMID: 33206320 PMCID: PMC8128931 DOI: 10.1007/s12017-020-08624-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Accepted: 10/08/2020] [Indexed: 01/18/2023]
Abstract
Classically, histologic grading of gliomas has been used to predict seizure association, with low-grade gliomas associated with an increased incidence of seizures compared to high-grade gliomas. In 2016, WHO reclassified gliomas based on histology and molecular characteristics. We sought to determine whether molecular classification of gliomas is associated with preoperative seizure presentation and/or post-operative seizure control across multiple glioma subtypes. All gliomas operated at our institution from 2007 to 2017 were identified based on ICD 9 and 10 billing codes and were retrospectively assessed for molecular classification of the IDH1 mutation, and 1p/19q codeletion. Logistic regression models were performed to assess associations of seizures at presentation as well as post-operative seizures with IDH status and the new WHO integrated classification. Our study included 376 patients: 82 IDH mutant and 294 IDH wildtype. The presence of IDH mutation was associated with seizures at presentation [OR 3.135 (1.818-5.404), p < 0.001]. IDH-mutant glioblastomas presented with seizures less often than other IDH-mutant glioma subtypes grade II and III [OR 0.104 (0.032-0.340), p < 0.001]. IDH-mutant tumors were associated with worse post-operative seizure outcomes, demonstrated by Engel Class [OR 2.666 (1.592-4.464), p < 0.001]. IDH mutation in gliomas is associated with an increased risk of seizure development and worse post-operative seizure control, in all grades except for GBM.
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Affiliation(s)
- Teresa P Easwaran
- Department of Surgery, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Nicola Lancki
- Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Mario Henriquez
- Department of Neurosurgery, University of Wisconsin School of Medicine and Public Health, 600 Highland Avenue CSC K3/803, Madison, WI, 53792, USA
| | - Alexander O Vortmeyer
- Department of Pathology, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Nicholas M Barbaro
- Department of Neurosurgery, Dell Medical School, The University of Texas, Austin, TX, USA
| | - Denise M Scholtens
- Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Atique U Ahmed
- Department of Neurosurgery and Robert H. Lurie Comprehensive Cancer Center, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Mahua Dey
- Department of Neurosurgery, University of Wisconsin School of Medicine and Public Health, 600 Highland Avenue CSC K3/803, Madison, WI, 53792, USA.
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Low-Grade Glioma Case Series: Lessons Learned from an Evolving 10-Year Single-Institution Multidisciplinary Team Practice. World Neurosurg 2021; 151:e47-e57. [PMID: 33781942 DOI: 10.1016/j.wneu.2021.03.101] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Accepted: 03/20/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND Low-grade gliomas are a heterogeneous group with significant changes in their management during the last decade. OBJECTIVE To assess how our multidisciplinary team approach to the management of low-grade glioma has evolved over the past 10 years and its implications for outcomes. METHODS Retrospective single-center cohort study of adult patients with a pathologically confirmed diagnosis of World Health Organization grade II glioma between 2009 and 2018. Demographic, clinical, and pathologic data were collected. RESULTS Ninety-five patients were included. There was a statistically significant difference in the surgical approach, with more patients having gross total resection (45.7% vs. 18.4%) and fewer patients having a biopsy (21.8% vs. 49.0%) (P = 0.002) after 2014. There was a significantly better overall survival after 2014 (<2014, 16.3%; ≥2014, 0 deaths; P = 0.010) measured at the mean time of follow-up. The use of adjuvant chemotherapy (P = 0.045) and radiotherapy (P = 0.001) significantly decreased after 2014. A subgroup analysis showed that the impact of extent of surgical resection was the greatest for survival in the 1p19q noncodeleted tumors (P = 0.029) and for seizure outcomes in the 1p19q codeleted group (P = 0.018). There was no statistically significant increase in neurologic disability with more radical surgery, incorporating intraoperative neuromonitoring, as measured by modified Rankin Scale score (P > 0.05). CONCLUSIONS More radical surgery was associated with increased survival, less need for postoperative adjuvant therapy and better seizure control, without significant morbidity. Molecular markers are useful tools for stratification of benefits after such surgery.
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Jo J, Nevel K, Sutyla R, Smolkin M, Lopes MB, Schiff D. Predictors of early, recurrent, and intractable seizures in low-grade glioma. Neurooncol Pract 2020; 8:40-47. [PMID: 33664968 DOI: 10.1093/nop/npaa054] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Background Seizures are common among patients with low-grade glioma (LGG) and can significantly affect morbidity. We sought to determine the association between the clinical and molecular factors with seizure incidence and refractoriness in LGG patients. Methods We conducted a retrospective review at the University of Virginia in patients with LGG (World Health Organization, WHO Grade II) evaluated between 2002 and 2015. Descriptive statistics were calculated for variables of interest, and the Kaplan-Meier method was used to estimate survival curves, which were compared with the log-rank test. Results A total of 291 patients were included; 254 had molecular testing performed for presence of an isocitrate dehydrogenase (IDH) mutation and/or 1p/19q codeletion. Sixty-eight percent of patients developed seizures prior to LGG diagnosis; 41% of all patients had intractable seizures. Using WHO 2016 integrated classification, there was no significant difference in seizure frequency during preoperative and postoperative periods or in developing intractable seizures, though a trend toward increased preoperative seizure incidence among patients with the IDH mutation was identified (P = .09). Male sex was significantly associated with higher seizure incidence during preoperative (P < .001) and postoperative periods (P < .001); men were also more likely to develop intractable seizures (P = .01). Conclusions Seizures are common among patients with LGG. Differences in preoperative or postoperative and intractable seizure rates by WHO 2016 classification were not detected. Our data showed a trend toward higher seizure incidence preoperatively in patients with IDH-mutant LGG. We describe a unique association between male sex and seizure incidence and intractability that warrants further study.
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Affiliation(s)
- Jasmin Jo
- Department of Neurology, University of Virginia, Charlottesville, Virginia
| | - Kathryn Nevel
- Department of Neurology, University of Virginia, Charlottesville, Virginia
| | - Ryan Sutyla
- School of Medicine, University of Virginia, Charlottesville, Virginia
| | - Mark Smolkin
- Department of Public Health Sciences, Division of Biostatistics, University of Virginia, Charlottesville, Virginia
| | - M Beatriz Lopes
- Department of Pathology, Division of Neuropathology, University of Virginia, Charlottesville, Virginia
| | - David Schiff
- Department of Neurology, Division of Neuro-Oncology, University of Virginia, Charlottesville, Virginia
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Mobark NA, Alharbi M, Alhabeeb L, AlMubarak L, Alaljelaify R, AlSaeed M, Almutairi A, Alqubaishi F, Ahmad M, Al-Banyan A, Alotabi FE, Barakeh D, AlZahrani M, Al-Khalidi H, Ajlan A, Ramkissoon LA, Ramkissoon SH, Abedalthagafi M. Clinical management and genomic profiling of pediatric low-grade gliomas in Saudi Arabia. PLoS One 2020; 15:e0228356. [PMID: 31995621 PMCID: PMC6988947 DOI: 10.1371/journal.pone.0228356] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Accepted: 01/13/2020] [Indexed: 01/22/2023] Open
Abstract
Pediatric Low Grade Gliomas (PLGGs) display heterogeneity regarding morphology, genomic drivers and clinical outcomes. The treatment modality dictates the outcome and optimizing patient management can be challenging. In this study, we profiled a targeted panel of cancer-related genes in 37 Saudi Arabian patients with pLGGs to identify genetic abnormalities that can inform prognostic and therapeutic decision-making. We detected genetic alterations (GAs) in 97% (36/37) of cases, averaging 2.51 single nucleotide variations (SNVs) and 0.91 gene fusions per patient. The KIAA1549-BRAF fusion was the most common alteration (21/37 patients) followed by AFAP1-NTRK2 (2/37) and TBLXR-PI3KCA (2/37) fusions that were observed at much lower frequencies. The most frequently mutated) genes were NOTCH1-3 (7/37), ATM (4/37), RAD51C (3/37), RNF43 (3/37), SLX4 (3/37) and NF1 (3/37). Interestingly, we identified a GOPC-ROS1 fusion in an 8-year-old patient whose tumor lacked BRAF alterations and histologically classified as low grade glioma. The patient underwent gross total resection (GTR). The patient is currently disease free. To our knowledge this is the first report of GOPC-ROS1 fusion in PLGG. Taken together, we reveal the genetic characteristics of pLGG patients can enhance diagnostics and therapeutic decisions. In addition, we identified a GOPC-ROS1 fusion that may be a biomarker for pLGG.
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Affiliation(s)
- Nahla A. Mobark
- Department of Paediatric Oncology Comprehensive Cancer Centre, King Fahad Medical City, Riyadh, Kingdom of Saudi Arabia
| | - Musa Alharbi
- Department of Paediatric Oncology Comprehensive Cancer Centre, King Fahad Medical City, Riyadh, Kingdom of Saudi Arabia
| | - Lamees Alhabeeb
- Genomics Research Department, Saudi Human Genome Project, King Fahad Medical City and King Abdulaziz City for Science and Technology, Riyadh, Saudi Arabia
| | - Latifa AlMubarak
- Genomics Research Department, Saudi Human Genome Project, King Fahad Medical City and King Abdulaziz City for Science and Technology, Riyadh, Saudi Arabia
| | - Rasha Alaljelaify
- Genomics Research Department, Saudi Human Genome Project, King Fahad Medical City and King Abdulaziz City for Science and Technology, Riyadh, Saudi Arabia
| | - Mariam AlSaeed
- Genomics Research Department, Saudi Human Genome Project, King Fahad Medical City and King Abdulaziz City for Science and Technology, Riyadh, Saudi Arabia
| | - Amal Almutairi
- Genomics Research Department, Saudi Human Genome Project, King Fahad Medical City and King Abdulaziz City for Science and Technology, Riyadh, Saudi Arabia
| | - Fatmah Alqubaishi
- Genomics Research Department, Saudi Human Genome Project, King Fahad Medical City and King Abdulaziz City for Science and Technology, Riyadh, Saudi Arabia
| | - Maqsood Ahmad
- Department of Neuroscience, King Fahad Medical City, Riyadh, Kingdom of Saudi Arabia
| | - Ayman Al-Banyan
- Department of Neuroscience, King Fahad Medical City, Riyadh, Kingdom of Saudi Arabia
| | - Fahad E. Alotabi
- Department of Neuroscience, King Fahad Medical City, Riyadh, Kingdom of Saudi Arabia
| | - Duna Barakeh
- Department of Pathology, King Khalid Hospital, King Saud University, Riyadh, Saudi Arabia
| | - Malak AlZahrani
- Department of Pathology, King Khalid Hospital, King Saud University, Riyadh, Saudi Arabia
| | - Hisham Al-Khalidi
- Department of Pathology, King Khalid Hospital, King Saud University, Riyadh, Saudi Arabia
| | - Abdulrazag Ajlan
- Department of Pathology, King Khalid Hospital, King Saud University, Riyadh, Saudi Arabia
| | - Lori A. Ramkissoon
- Department of Neurosurgery, University of North Carolina School of Medicine, Chapel Hill, NC, United States of America
| | - Shakti H. Ramkissoon
- Wake Forest Comprehensive Cancer Center and Department of Pathology, Wake Forest School of Medicine, Winston-Salem, NC, United States of America
- Foundation Medicine Inc., Morrisville, NC, United States of America
| | - Malak Abedalthagafi
- Genomics Research Department, Saudi Human Genome Project, King Fahad Medical City and King Abdulaziz City for Science and Technology, Riyadh, Saudi Arabia
- * E-mail:
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