1
|
Nurminen R, Afyounian E, Paunu N, Katainen R, Isomäki M, Nurminen A, Scaravilli M, Tolppanen J, Fey V, Kivinen A, Helén P, Välimäki N, Kesseli J, Aaltonen LA, Haapasalo H, Nykter M, Rautajoki KJ. Previously reported CCDC26 risk variant and novel germline variants in GALNT13, AR, and MYO10 associated with familial glioma in Finland. Sci Rep 2024; 14:11562. [PMID: 38773237 PMCID: PMC11109329 DOI: 10.1038/s41598-024-62296-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Accepted: 05/15/2024] [Indexed: 05/23/2024] Open
Abstract
Predisposing factors underlying familial aggregation of non-syndromic gliomas are still to be uncovered. Whole-exome sequencing was performed in four Finnish families with brain tumors to identify rare predisposing variants. A total of 417 detected exome variants and 102 previously reported glioma-related variants were further genotyped in 19 Finnish families with brain tumors using targeted sequencing. Rare damaging variants in GALNT13, MYO10 and AR were identified. Two families carried either c.553C>T (R185C) or c.1214T>A (L405Q) on GALNT13. Variant c.553C>T is located on the substrate-binding site of GALNT13. AR c.2180G>T (R727L), which is located on a ligand-binding domain of AR, was detected in two families, one of which also carried a GALNT13 variant. MYO10 c.4448A>G (N1483S) was detected in two families and c.1511C>T (A504V) variant was detected in one family. Both variants are located on functional domains related to MYO10 activity in filopodia formation. In addition, affected cases in six families carried a known glioma risk variant rs55705857 in CCDC26 and low-risk glioma variants. These novel findings indicate polygenic inheritance of familial glioma in Finland and increase our understanding of the genetic contribution to familial glioma susceptibility.
Collapse
Affiliation(s)
- Riikka Nurminen
- Prostate Cancer Research Center, Faculty of Medicine and Health Technology, Tampere University, Arvo Ylpön katu 34, 33520, Tampere, Finland
- Tays Cancer Center, Tampere University Hospital, Tampere, Finland
| | - Ebrahim Afyounian
- Prostate Cancer Research Center, Faculty of Medicine and Health Technology, Tampere University, Arvo Ylpön katu 34, 33520, Tampere, Finland
- Tays Cancer Center, Tampere University Hospital, Tampere, Finland
| | - Niina Paunu
- Department of Oncology, Tampere University Hospital, Tampere, Finland
| | - Riku Katainen
- Applied Tumor Genomics Research Program, Department of Medical and Clinical Genetics, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Mari Isomäki
- Prostate Cancer Research Center, Faculty of Medicine and Health Technology, Tampere University, Arvo Ylpön katu 34, 33520, Tampere, Finland
- Tays Cancer Center, Tampere University Hospital, Tampere, Finland
| | - Anssi Nurminen
- Prostate Cancer Research Center, Faculty of Medicine and Health Technology, Tampere University, Arvo Ylpön katu 34, 33520, Tampere, Finland
- Tays Cancer Center, Tampere University Hospital, Tampere, Finland
| | - Mauro Scaravilli
- Prostate Cancer Research Center, Faculty of Medicine and Health Technology, Tampere University, Arvo Ylpön katu 34, 33520, Tampere, Finland
- Tays Cancer Center, Tampere University Hospital, Tampere, Finland
| | - Jenni Tolppanen
- Prostate Cancer Research Center, Faculty of Medicine and Health Technology, Tampere University, Arvo Ylpön katu 34, 33520, Tampere, Finland
- Tays Cancer Center, Tampere University Hospital, Tampere, Finland
| | - Vidal Fey
- Prostate Cancer Research Center, Faculty of Medicine and Health Technology, Tampere University, Arvo Ylpön katu 34, 33520, Tampere, Finland
- Tays Cancer Center, Tampere University Hospital, Tampere, Finland
| | - Anni Kivinen
- Prostate Cancer Research Center, Faculty of Medicine and Health Technology, Tampere University, Arvo Ylpön katu 34, 33520, Tampere, Finland
- Tays Cancer Center, Tampere University Hospital, Tampere, Finland
| | - Pauli Helén
- Prostate Cancer Research Center, Faculty of Medicine and Health Technology, Tampere University, Arvo Ylpön katu 34, 33520, Tampere, Finland
- Tays Cancer Center, Tampere University Hospital, Tampere, Finland
| | - Niko Välimäki
- Applied Tumor Genomics Research Program, Department of Medical and Clinical Genetics, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Juha Kesseli
- Prostate Cancer Research Center, Faculty of Medicine and Health Technology, Tampere University, Arvo Ylpön katu 34, 33520, Tampere, Finland
- Tays Cancer Center, Tampere University Hospital, Tampere, Finland
| | - Lauri A Aaltonen
- Applied Tumor Genomics Research Program, Department of Medical and Clinical Genetics, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Hannu Haapasalo
- Prostate Cancer Research Center, Faculty of Medicine and Health Technology, Tampere University, Arvo Ylpön katu 34, 33520, Tampere, Finland
- Tays Cancer Center, Tampere University Hospital, Tampere, Finland
- Fimlab Laboratories ltd., Tampere University Hospital, Tampere, Finland
| | - Matti Nykter
- Prostate Cancer Research Center, Faculty of Medicine and Health Technology, Tampere University, Arvo Ylpön katu 34, 33520, Tampere, Finland.
- Tays Cancer Center, Tampere University Hospital, Tampere, Finland.
- Foundation for the Finnish Cancer Institute, Tukholmankatu 8, Helsinki, Finland.
| | - Kirsi J Rautajoki
- Prostate Cancer Research Center, Faculty of Medicine and Health Technology, Tampere University, Arvo Ylpön katu 34, 33520, Tampere, Finland.
- Tays Cancer Center, Tampere University Hospital, Tampere, Finland.
- Tampere Institute for Advanced Study, Tampere University, Tampere, Finland.
| |
Collapse
|
2
|
Price M, Neff C, Nagarajan N, Kruchko C, Waite KA, Cioffi G, Cordeiro BB, Willmarth N, Penas-Prado M, Gilbert MR, Armstrong TS, Barnholtz-Sloan JS, Ostrom QT. CBTRUS Statistical Report: American Brain Tumor Association & NCI Neuro-Oncology Branch Adolescent and Young Adult Primary Brain and Other Central Nervous System Tumors Diagnosed in the United States in 2016-2020. Neuro Oncol 2024; 26:iii1-iii53. [PMID: 38709657 PMCID: PMC11073545 DOI: 10.1093/neuonc/noae047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/08/2024] Open
Abstract
Recent analyses have shown that, whereas cancer survival overall has been improving, it has not improved for adolescents and young adults ages 15-39 years (AYA). The clinical care of AYA with primary brain and other central nervous system (CNS) tumors (BT) is complicated by the fact that the histopathologies of such tumors in AYA differ from their histopathologies in either children (ages 0-14 years) or older adults (ages 40+ years). The present report, as an update to a 2016 publication from the Central Brain Tumor Registry of the United States and the American Brain Tumor Association, provides in-depth analyses of the epidemiology of primary BT in AYA in the United States and is the first to provide biomolecular marker-specific statistics and prevalence by histopathology for both primary malignant and non-malignant BT in AYA. Between 2016 and 2020, the annual average age-specific incidence rate (AASIR) of primary malignant and non-malignant BT in AYA was 12.00 per 100,000 population, an average of 12,848 newly diagnosed cases per year. During the same period, an average of 1,018 AYA deaths per year were caused by primary malignant BT, representing an annual average age-specific mortality rate of 0.96 per 100,000 population. When primary BT were categorized by histopathology, pituitary tumors were the most common (36.6%), with an AASIR of 4.34 per 100,000 population. Total incidence increased with age overall; when stratified by sex, the incidence was higher in females than males at all ages. Incidence rates for all primary BT combined and for non-malignant tumors only were highest for non-Hispanic American Indian/Alaska Native individuals, whereas malignant tumors were more frequent in non-Hispanic White individuals, compared with other racial/ethnic groups. On the basis of histopathology, the most common molecularly defined tumor was diffuse glioma (an AASIR of 1.51 per 100,000). Primary malignant BT are the second most common cause of cancer death in the AYA population. Incidence rates of primary BT overall, as well as specific histopathologies, vary significantly by age. Accordingly, an accurate statistical assessment of primary BT in the AYA population is vital for better understanding the impact of these tumors on the US population and to serve as a reference for afflicted individuals, for researchers investigating new therapies, and for clinicians treating these patients.
Collapse
Affiliation(s)
- Mackenzie Price
- Central Brain Tumor Registry of the United States, Hinsdale, Illinois, USA
| | - Corey Neff
- Central Brain Tumor Registry of the United States, Hinsdale, Illinois, USA
- Department of Neurosurgery, Duke University School of Medicine, Durham, North Carolina, USA
| | | | - Carol Kruchko
- Central Brain Tumor Registry of the United States, Hinsdale, Illinois, USA
| | - Kristin A Waite
- Central Brain Tumor Registry of the United States, Hinsdale, Illinois, USA
- Trans Divisional Research Program, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Gino Cioffi
- Central Brain Tumor Registry of the United States, Hinsdale, Illinois, USA
- Trans Divisional Research Program, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Brittany B Cordeiro
- Neuro-Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | | | - Marta Penas-Prado
- Neuro-Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Mark R Gilbert
- Neuro-Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Terri S Armstrong
- Neuro-Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Jill S Barnholtz-Sloan
- Central Brain Tumor Registry of the United States, Hinsdale, Illinois, USA
- Trans Divisional Research Program, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
- Center for Biomedical Informatics & Information Technology, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Quinn T Ostrom
- Central Brain Tumor Registry of the United States, Hinsdale, Illinois, USA
- Department of Neurosurgery, Duke University School of Medicine, Durham, North Carolina, USA
- Duke Cancer Institute, Duke University Medical Center, Durham, North Carolina, USA
| |
Collapse
|
3
|
Yeh J, Chen Y, Chou Y, Su S, Chang L, Chen Y, Lin C, Yang S. Interactive effects of CDKN2B-AS1 gene polymorphism and habitual risk factors on oral cancer. J Cell Mol Med 2023; 27:3395-3403. [PMID: 37724356 PMCID: PMC10623535 DOI: 10.1111/jcmm.17966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 08/02/2023] [Accepted: 09/08/2023] [Indexed: 09/20/2023] Open
Abstract
Oral squamous cell carcinoma (OSCC) is a common malignant disease associated with a high mortality rate and heterogeneous disease aetiology. Cyclin dependent kinase inhibitor 2B antisense RNA 1 (CDKN2B-AS1), is a long noncoding RNA that has been shown to act as a scaffold, sponge, or signal hub to promote carcinogenesis. Here, we attempted to assess the effect of CDKN2B-AS1 single-nucleotide polymorphisms (SNPs) on the susceptibility to OSCC. Five CDKN2B-AS1 SNPs, including rs564398, rs1333048, rs1537373, rs2151280 and rs8181047, were analysed in 1060 OSCC cases and 1183 cancer-free controls. No significant association of these five SNPs with the risk of developing OSCC was detected between the case and control group. However, while examining the clinical characteristics, patients bearing at least one minor allele of rs1333048 (CA and CC) were more inclined to develop late-stage (stage III/IV, adjusted OR, 1.480; 95% CI, 1.129-1.940; p = 0.005) and large-size (greater than 2 cm in the greatest dimension, adjusted OR, 1.347; 95% CI, 1.028-1.765; p = 0.031) tumours, as compared with those homologous for the major allele (AA). Further stratification analyses demonstrated that this genetic correlation with the advanced stage of disease was observed only in habitual betel quid chewers (adjusted OR, 1.480; 95% CI, 1.076-2.035; p = 0.016) or cigarette smokers (adjusted OR, 1.531; 95% CI, 1.136-2.063; p = 0.005) but not in patients who were not exposed to these major habitual risks. These data reveal an interactive effect of CDKN2B-AS1 rs1333048 with habitual exposure to behavioural risks on the progression of oral cancer.
Collapse
Affiliation(s)
- Jung‐Chun Yeh
- School of Dentistry, Chung Shan Medical UniversityTaichungTaiwan
- Department of DentistryChung Shan Medical University HospitalTaichungTaiwan
| | - Yi‐Tzu Chen
- School of Dentistry, Chung Shan Medical UniversityTaichungTaiwan
- Department of DentistryChung Shan Medical University HospitalTaichungTaiwan
| | - Ying‐Erh Chou
- School of Medicine, Chung Shan Medical UniversityTaichungTaiwan
- Department of Medical ResearchChung Shan Medical University HospitalTaichungTaiwan
| | - Shih‐Chi Su
- Whole‐Genome Research Core Laboratory of Human Diseases, Chang Gung Memorial HospitalKeelungTaiwan
- Department of Dermatology, Drug Hypersensitivity Clinical and Research CenterChang Gung Memorial HospitalLinkouTaiwan
| | - Lun‐Ching Chang
- Department of Mathematical SciencesFlorida Atlantic UniversityBoca RatonFloridaUSA
| | - Yen‐Lin Chen
- School of Dentistry, Chung Shan Medical UniversityTaichungTaiwan
- Department of DentistryChung Shan Medical University HospitalTaichungTaiwan
| | - Chiao‐Wen Lin
- Department of DentistryChung Shan Medical University HospitalTaichungTaiwan
- Institute of Oral Sciences, Chung Shan Medical UniversityTaichungTaiwan
| | - Shun‐Fa Yang
- Department of Medical ResearchChung Shan Medical University HospitalTaichungTaiwan
- Institute of Medicine, Chung Shan Medical UniversityTaichungTaiwan
| |
Collapse
|
4
|
McDonald MF, Prather LL, Helfer CR, Ludmir EB, Echeverria AE, Yust-Katz S, Patel AJ, Deneen B, Rao G, Jalali A, Dhar SU, Amos CI, Mandel JJ. Prevalence of pathogenic germline variants in adult-type diffuse glioma. Neurooncol Pract 2023; 10:482-490. [PMID: 37720399 PMCID: PMC10502787 DOI: 10.1093/nop/npad033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/19/2023] Open
Abstract
Background No consensus germline testing guidelines currently exist for glioma patients, so the prevalence of germline pathogenic variants remains unknown. This study aims to determine the prevalence and type of pathogenic germline variants in adult glioma. Methods A retrospective review at a single institution with paired tumor/normal sequencing from August 2018-April 2022 was performed and corresponding clinical data were collected. Results We identified 152 glioma patients of which 15 (9.8%) had pathogenic germline variants. Pathogenic germline variants were seen in 11/84 (13.1%) of Glioblastoma, IDH wild type; 3/42 (7.1%) of Astrocytoma, IDH mutant; and 1/26 (3.8%) of Oligodendroglioma, IDH mutant, and 1p/19q co-deleted patients. Pathogenic variants in BRCA2, MUTYH, and CHEK2 were most common (3/15, 20% each). BRCA1 variants occurred in 2/15 (13%) patients, with variants in NF1, ATM, MSH2, and MSH3 occurring in one patient (7%) each. Prior cancer diagnosis was found in 5/15 patients (33%). Second-hit somatic variants were seen in 3/15 patients (20%) in NF1, MUTYH, and MSH2. Referral to genetics was performed in 6/15 (40%) patients with pathogenic germline variants. 14/15 (93%) of patients discovered their pathogenic variant as a result of their paired glioma sequencing. Conclusions These findings suggest a possible overlooked opportunity for determination of hereditary cancer syndromes with impact on surveillance as well as potential broader treatment options. Further studies that can determine the role of variants in gliomagenesis and confirm the occurrence and types of pathogenic germline variants in patients with IDH wild type compared to IDH mutant tumors are necessary.
Collapse
Affiliation(s)
- Malcolm F McDonald
- Department of Neurosurgery, Baylor College of Medicine, Houston, Texas, USA
- Medical Scientist Training Program, Baylor College of Medicine, Houston, Texas, USA
| | - Lyndsey L Prather
- Department of Neurology, Baylor College of Medicine, Houston, Texas, USA
| | - Cassandra R Helfer
- Department of Neurology, Baylor College of Medicine, Houston, Texas, USA
| | - Ethan B Ludmir
- Department of Radiation Oncology, MD Anderson Cancer Center, Houston, Texas, USA
| | - Alfredo E Echeverria
- Department of Radiation Oncology, Baylor College of Medicine, Houston, Texas, USA
| | | | - Akash J Patel
- Department of Neurosurgery, Baylor College of Medicine, Houston, Texas, USA
- Department of Otolaryngology-Head and Neck Surgery, Baylor College of Medicine, Houston, Texas, USA
- Jan and Dan Duncan Neurological Research Institute, Texas Children’s Hospital, Houston, Texas, USA
| | - Benjamin Deneen
- Department of Neurosurgery, Baylor College of Medicine, Houston, Texas, USA
| | - Ganesh Rao
- Department of Neurosurgery, Baylor College of Medicine, Houston, Texas, USA
| | - Ali Jalali
- Department of Neurosurgery, Baylor College of Medicine, Houston, Texas, USA
| | - Shweta U Dhar
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas, USA
- Department of Internal Medicine, Baylor College of Medicine, Houston, Texas, USA
| | - Chris I Amos
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas, USA
| | - Jacob J Mandel
- Department of Neurology, Baylor College of Medicine, Houston, Texas, USA
| |
Collapse
|
5
|
Foss-Skiftesvik J, Li S, Rosenbaum A, Hagen CM, Stoltze UK, Ljungqvist S, Hjalmars U, Schmiegelow K, Morimoto L, de Smith AJ, Mathiasen R, Metayer C, Hougaard D, Melin B, Walsh KM, Bybjerg-Grauholm J, Dahlin AM, Wiemels JL. Multi-ancestry genome-wide association study of 4069 children with glioma identifies 9p21.3 risk locus. Neuro Oncol 2023; 25:1709-1720. [PMID: 36810956 PMCID: PMC10484172 DOI: 10.1093/neuonc/noad042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Indexed: 02/24/2023] Open
Abstract
BACKGROUND Although recent sequencing studies have revealed that 10% of childhood gliomas are caused by rare germline mutations, the role of common variants is undetermined and no genome-wide significant risk loci for pediatric central nervous system tumors have been identified to date. METHODS Meta-analysis of 3 population-based genome-wide association studies comprising 4069 children with glioma and 8778 controls of multiple genetic ancestries. Replication was performed in a separate case-control cohort. Quantitative trait loci analyses and a transcriptome-wide association study were conducted to assess possible links with brain tissue expression across 18 628 genes. RESULTS Common variants in CDKN2B-AS1 at 9p21.3 were significantly associated with astrocytoma, the most common subtype of glioma in children (rs573687, P-value of 6.974e-10, OR 1.273, 95% CI 1.179-1.374). The association was driven by low-grade astrocytoma (P-value of 3.815e-9) and exhibited unidirectional effects across all 6 genetic ancestries. For glioma overall, the association approached genome-wide significance (rs3731239, P-value of 5.411e-8), while no significant association was observed for high-grade tumors. Predicted decreased brain tissue expression of CDKN2B was significantly associated with astrocytoma (P-value of 8.090e-8). CONCLUSIONS In this population-based genome-wide association study meta-analysis, we identify and replicate 9p21.3 (CDKN2B-AS1) as a risk locus for childhood astrocytoma, thereby establishing the first genome-wide significant evidence of common variant predisposition in pediatric neuro-oncology. We furthermore provide a functional basis for the association by showing a possible link to decreased brain tissue CDKN2B expression and substantiate that genetic susceptibility differs between low- and high-grade astrocytoma.
Collapse
Affiliation(s)
- Jon Foss-Skiftesvik
- Department of Neurosurgery, Rigshospitalet University Hospital, Copenhagen, Denmark
- Department of Pediatrics and Adolescent Medicine, Rigshospitalet University Hospital, Copenhagen, Denmark
- Section for Neonatal Genetics, Statens Serum Institute, Copenhagen, Denmark
| | - Shaobo Li
- Center for Genetic Epidemiology, Department of Population and Public Health Sciences, University of Southern California, Los Angeles, California, USA
| | - Adam Rosenbaum
- Department of Radiation Sciences, Oncology, Umeå University, Umeå, Sweden
| | | | - Ulrik Kristoffer Stoltze
- Department of Pediatrics and Adolescent Medicine, Rigshospitalet University Hospital, Copenhagen, Denmark
- Department of Clinical Genetics, Rigshospitalet University Hospital, Copenhagen, Denmark
| | - Sally Ljungqvist
- Department of Radiation Sciences, Oncology, Umeå University, Umeå, Sweden
| | - Ulf Hjalmars
- Department of Radiation Sciences, Oncology, Umeå University, Umeå, Sweden
| | - Kjeld Schmiegelow
- Department of Pediatrics and Adolescent Medicine, Rigshospitalet University Hospital, Copenhagen, Denmark
| | - Libby Morimoto
- Center for Personalized Medicine, Children’s Hospital of Los Angeles, Los Angeles, California, USA
| | - Adam J de Smith
- Center for Genetic Epidemiology, Department of Population and Public Health Sciences, University of Southern California, Los Angeles, California, USA
| | - René Mathiasen
- Department of Pediatrics and Adolescent Medicine, Rigshospitalet University Hospital, Copenhagen, Denmark
| | - Catherine Metayer
- School of Public Health, University of California, Berkeley, Berkeley, California, USA
| | - David Hougaard
- Section for Neonatal Genetics, Statens Serum Institute, Copenhagen, Denmark
| | - Beatrice Melin
- Department of Radiation Sciences, Oncology, Umeå University, Umeå, Sweden
| | - Kyle M Walsh
- Division of Neuro-Epidemiology, Department of Neurosurgery, Duke University, Durham, North Carolina, USA
| | | | - Anna M Dahlin
- Department of Radiation Sciences, Oncology, Umeå University, Umeå, Sweden
| | - Joseph L Wiemels
- Center for Genetic Epidemiology, Department of Population and Public Health Sciences, University of Southern California, Los Angeles, California, USA
| |
Collapse
|
6
|
Mukerjee N, Maitra S, Roy S, Modak S, Hasan MM, Chakraborty B, Ghosh A, Ghosh A, Kamal MA, Dey A, Ashraf GM, Malik S, Rahman MH, Alghamdi BS, Abuzenadah AM, Alexiou A. Treatments against Polymorphosal discrepancies in Glioblastoma Multiforme. Metab Brain Dis 2023; 38:61-68. [PMID: 36149588 DOI: 10.1007/s11011-022-01082-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 08/30/2022] [Indexed: 02/03/2023]
Abstract
Glioblastoma (GB) are aggressive tumors that obstruct normal brain function. While the skull cannot expand in response to cancer growth, the growing pressure in the brain is generally the first sign. It can produce more frequent headaches, unexplained nausea or vomiting, blurred peripheral vision, double vision, a loss of feeling or movement in an arm or leg, and difficulty speaking and concentrating; all depend on the tumor's location. GB can also cause vascular thrombi, damaging endothelial cells and leading to red blood cell leakage. Latest studies have revealed the role of single nucleotide polymorphisms (SNPs) in developing and spreading cancers such as GB and breast cancer. Many discovered SNPs are associated with GB, particularly in great abundance in the promoter region, creating polygenetic vulnerability to glioma. This study aims to compile a list of some of the most frequent and significant SNPs implicated with GB formation and proliferation.
Collapse
Affiliation(s)
- Nobendu Mukerjee
- Department of Microbiology, Ramakrishna Mission Vivekananda Centenary College, Rahara, Khardah, West Bengal, Kolkata, 700118, India.
- Department of Science and Engineering, Novel Global Community Educational Foundation, Hebersham, NSW, 2770, Australia.
| | - Swastika Maitra
- Department of Microbiology, Adamas University, Kolkata, 700126, West Bengal, India
| | - Subhradeep Roy
- Department of Microbiology, Ramakrishna Mission Vivekananda Centenary College, Rahara, Khardah, West Bengal, Kolkata, 700118, India
| | - Shaswata Modak
- Department of Microbiology, Ramakrishna Mission Vivekananda Centenary College, Rahara, Khardah, West Bengal, Kolkata, 700118, India
| | - Mohammad Mehedi Hasan
- Department of Biochemistry and Molecular Biology, Faculty of Life Science, Mawlana Bhashani Science and Technology University, Tangail, Bangladesh
| | - Biswajit Chakraborty
- Department of Biochemistry and Biophysics, University of Kalyani Nadia, Kalyani, West Bengal, India
| | - Arabinda Ghosh
- Microbiology Division, Department of Botany, Gauhati University, Guwahati, Assam, India
| | - Asmita Ghosh
- Department of Biochemistry, McGill University, Montreal, Canada
| | - Mohammad Amjad Kamal
- Institutes for Systems Genetics, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China
- King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia
- Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Dhaka, Bangladesh
- Enzymoics, Novel Global Community Educational Foundation, 7 Peterlee place, Habersham , NSW, 2770, Australia
| | - Abhijit Dey
- Department of Life Sciences, Presidency University, Kolkata, West Bengal, India
| | - Ghulam Md Ashraf
- Pre-Clinical Research Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
- Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - Sumira Malik
- Amity Institute of Biotechnology, Amity University Jharkhand, Ranchi, Jharkhand, 834001, India
| | - Md Habibur Rahman
- Department of Global Medical Science, Wonju College of Medicine, Yonsei University, Gangwon-do, Wonju, 26426, Korea
| | - Badrah S Alghamdi
- Pre-Clinical Research Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
- Department of Physiology, Neuroscience Unit, Faculty of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Adel Mohammad Abuzenadah
- King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia
- Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Athanasios Alexiou
- Novel Global Community Educational Foundation, Hebersham, NSW, 2770, Australia.
- AFNP Med, 1030, Vienna, Austria.
| |
Collapse
|
7
|
Suman S, Sharma R, Katiyar V, Mahajan S, Suri A, Sharma MC, Sarkar C, Suri V. Role of CDKN2A deletion in grade 2/3 IDH-mutant astrocytomas: need for selective approach in resource-constrained settings. Neurosurg Focus 2022; 53:E17. [PMID: 36455270 DOI: 10.3171/2022.9.focus22427] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Accepted: 09/20/2022] [Indexed: 12/05/2022]
Abstract
OBJECTIVE The authors aimed to assess the frequency of homozygous CDKN2A deletion in isocitrate dehydrogenase (IDH)-mutant diffuse astrocytomas (grade 2/3) and to narrow down the clinicopathological indications in which the CDKN2A fluorescence in situ hybridization (FISH) assay is cost-effective in resource-constrained settings. METHODS IDH-mutant astrocytomas were analyzed for ATRX, p53, MIB1-LI, and p16 expression using immunohistochemistry. The FISH assay was used to evaluate CDKN2A deletion and 1p/19q codeletion. Survival outcomes were assessed according to the different molecular markers. RESULTS A total of 150 adult patients with IDH-mutant grade 2 (n = 95) and grade 3 (n = 55) astrocytomas (145 primary and 5 recurrent) were analyzed. Using a cutoff value of 30% for defining significant homozygous CDKN2A deletion, none of the grade 2 and 10.9% (6/55) of grade 3 astrocytomas showed this deletion (4 primary and 2 recurrent grade 3 tumors) and were reclassified as grade 4. This mutation was more frequent in recurrent (40%, 2/5) than primary (2.76%, 4/145) gliomas. Half (3/6, 50%) of the CDKN2A-deleted cases demonstrated poor outcomes; 2 of these cases experienced recurrence at 12 and 36 months after surgery, and 1 died at 5 months. The majority of CDKN2A-deleted cases showed marked cellularity (100%), pleomorphism (100%), brisk mitosis (83.3%), and tumor giant cell formation (83.4%). None of the cases with retained p16 expression harbored this deletion. Both overall survival (p = 0.039) and progression-free survival (p = 0.0045) were found to be worse in cases with p16 loss. Selectively performing CDKN2A FISH only in high-risk cases with histomorphological features of anaplasia, p16 loss, or recurrent tumors achieved a sensitivity and negative predictive value of 100%. This approach would have resulted in saving 41.1% of the original expenditure ($6900 US per 150 samples) and 27.6 person-minutes per sample without compromising the identification of deleted cases. CONCLUSIONS Homozygous CDKN2A deletion is conspicuously absent in grade 2 and rare in primary grade 3 IDH-mutant astrocytomas. The authors propose that restricting use of the FISH assay to cases showing histomorphological features of anaplasia, p16 loss, or recurrent tumors will help this platform to be utilized in the most cost-effective manner in resource-constrained settings.
Collapse
Affiliation(s)
| | - Ravi Sharma
- 2Department of Neurosurgery, All India Institute of Medical Sciences, New Delhi, India
| | - Varidh Katiyar
- 2Department of Neurosurgery, All India Institute of Medical Sciences, New Delhi, India
| | | | - Ashish Suri
- 2Department of Neurosurgery, All India Institute of Medical Sciences, New Delhi, India
| | | | | | | |
Collapse
|
8
|
Baek IK, Cheong HS, Namgoong S, Kim JH, Kang SG, Yoon SJ, Kim SH, Chang JH, Kim LH, Shin HD. Two independent variants of epidermal growth factor receptor associated with risk of glioma in a Korean population. Sci Rep 2022; 12:19014. [PMID: 36347915 PMCID: PMC9643523 DOI: 10.1038/s41598-022-23217-6] [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: 04/22/2022] [Accepted: 10/26/2022] [Indexed: 11/10/2022] Open
Abstract
Gliomas are the most common primary tumors in the brain and spinal cord. In previous GWASs, SNPs in epidermal growth factor receptor (EGFR) have been reported as risk loci for gliomas. However, EGFR variants associated with gliomas in the Korean population remain unstudied. This study explored the association of EGFR SNPs with the risk of glioma. We genotyped 13 EGFR exon SNPs in a case-control study that included 324 Korean patients diagnosed with glioma and 480 population-based controls. Statistical analyses of the association between EGFR SNPs and glioma risk were conducted using logistic regression. Both stepwise analysis and conditional logistic analysis were performed to identify independent associations among genotyped variants. We confirmed that two SNPs (rs2227983, rs1050171) were significantly associated with glioma (rs2227983: odds ratio = 1.42, Pcorr = 0.009; rs1050171: odds ratio = 1.68, Pcorr = 0.005). Additionally, the stepwise analysis and conditional logistic analysis indicated that both SNPs created variants with independent genetic effects. This study is the first to show evidence that functional variants of EGFR, namely, rs2227983 (K521R) and rs1050171 (Q787Q), are associated with an increased risk of glioma in the Korean population. Future work should confirm the functional association between EGFR variants and glioma.
Collapse
Affiliation(s)
- In Ki Baek
- grid.263736.50000 0001 0286 5954Department of Life Science, Sogang University, Seoul, 04107 Republic of Korea
| | - Hyun Sub Cheong
- Research Institute for Life Science, GW Vitek, Inc., Seoul, Republic of Korea
| | - Seok Namgoong
- Research Institute for Life Science, GW Vitek, Inc., Seoul, Republic of Korea
| | - Jeong-Hyun Kim
- grid.267370.70000 0004 0533 4667Department of Medicine, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Seok-Gu Kang
- grid.15444.300000 0004 0470 5454Department of Neurosurgery, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Seon-Jin Yoon
- grid.15444.300000 0004 0470 5454Department of Neurosurgery, Yonsei University College of Medicine, Seoul, Republic of Korea ,grid.15444.300000 0004 0470 5454Department of Biochemistry and Molecular Biology, College of Medicine, Yonsei University, Seoul, Republic of Korea
| | - Se Hoon Kim
- grid.15444.300000 0004 0470 5454Department of Pathology, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Jong Hee Chang
- grid.15444.300000 0004 0470 5454Department of Neurosurgery, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Lyoung Hyo Kim
- Research Institute for Life Science, GW Vitek, Inc., Seoul, Republic of Korea
| | - Hyoung Doo Shin
- grid.263736.50000 0001 0286 5954Department of Life Science, Sogang University, Seoul, 04107 Republic of Korea ,grid.263736.50000 0001 0286 5954Research Institute for Basic Science, Sogang University, Seoul, Republic of Korea
| |
Collapse
|
9
|
Genetic predisposition to central nervous system tumors in children - what the neurosurgeon should know. Acta Neurochir (Wien) 2022; 164:3025-3034. [PMID: 35660974 DOI: 10.1007/s00701-022-05258-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 05/17/2022] [Indexed: 02/01/2023]
Abstract
BACKGROUND Historically, few pediatric central nervous system (CNS) tumors were thought to result from genetic predisposition. However, within the last decade, new DNA sequencing methods have led to an increased recognition of high-risk cancer predisposition syndromes in children with CNS tumors. Thus, genetic predisposition is increasingly impacting clinical pediatric neuro-oncology. METHODS In this narrative review, we discuss the current understanding of genetic predisposition to childhood CNS tumors and provide a general overview of involved research methodologies and terminology. Moreover, we consider how germline genetics may influence neurosurgical practice. RESULTS Introduction of next-generation DNA sequencing has greatly increased our understanding of genetic predisposition to pediatric CNS tumors by enabling whole-exome/-genome sequencing of large cohorts. To date, the scientific literature has reported germline sequencing findings for more than 2000 children with CNS tumors. Although varying between tumor types, at least 10% of childhood CNS tumors can currently be explained by rare pathogenic germline variants in known cancer-related genes. Novel methodologies continue to uncover new mechanisms, suggesting that a much higher proportion of children with CNS tumors have underlying genetic causes. Understanding how genetic predisposition influences tumor biology and the clinical course in a given patient may mandate adjustments to neurosurgical treatment. CONCLUSION Germline genetics is becoming increasingly important to clinicians, including neurosurgeons. This review provides an updated overview of genetic predisposition to childhood CNS tumors with focus on aspects relevant to pediatric neurosurgeons.
Collapse
|
10
|
Mo Z, Xin J, Chai R, Woo PY, Chan DT, Wang J. Epidemiological characteristics and genetic alterations in adult diffuse glioma in East Asian populations. Cancer Biol Med 2022; 19:1440-1459. [PMID: 36350002 PMCID: PMC9630523 DOI: 10.20892/j.issn.2095-3941.2022.0418] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2022] [Accepted: 09/20/2022] [Indexed: 05/06/2024] Open
Abstract
Understanding the racial specificities of diseases-such as adult diffuse glioma, the most common primary malignant tumor of the central nervous system-is a critical step toward precision medicine. Here, we comprehensively review studies of gliomas in East Asian populations and other ancestry groups to clarify the racial differences in terms of epidemiology and genomic characteristics. Overall, we observed a lower glioma incidence in East Asians than in Whites; notably, patients with glioblastoma had significantly younger ages of onset and longer overall survival than the Whites. Multiple genome-wide association studies of various cohorts have revealed single nucleotide polymorphisms associated with overall and subtype-specific glioma susceptibility. Notably, only 3 risk loci-5p15.33, 11q23.3, and 20q13.33-were shared between patients with East Asian and White ancestry, whereas other loci predominated only in particular populations. For instance, risk loci 12p11.23, 15q15-21.1, and 19p13.12 were reported in East Asians, whereas risk loci 8q24.21, 1p31.3, and 1q32.1 were reported in studies in White patients. Although the somatic mutational profiles of gliomas between East Asians and non-East Asians were broadly consistent, a lower incidence of EGFR amplification in glioblastoma and a higher incidence of 1p19q-IDH-TERT triple-negative low-grade glioma were observed in East Asian cohorts. By summarizing large-scale disease surveillance, germline, and somatic genomic studies, this review reveals the unique characteristics of adult diffuse glioma among East Asians, to guide clinical management and policy design focused on patients with East Asian ancestry.
Collapse
Affiliation(s)
- Zongchao Mo
- Division of Life Science and State Key Laboratory of Molecular Neuroscience, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
- HKUST Shenzhen-Hong Kong Collaborative Innovation Research Institute, Shenzhen 518000, China
| | - Junyi Xin
- Division of Life Science and State Key Laboratory of Molecular Neuroscience, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
| | - Ruichao Chai
- Division of Life Science and State Key Laboratory of Molecular Neuroscience, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
- Department of Molecular Neuropathology, Beijing Neurosurgical Institute, Capital Medical University, Beijing 100070, China
| | - Peter Y.M. Woo
- Department of Neurosurgery, Kwong Wah Hospital, Hong Kong SAR, China
- Hong Kong Neuro-Oncology Society, Hong Kong SAR, China
| | - Danny T.M. Chan
- Division of Neurosurgery, Department of Surgery, Prince of Wales Hospital, Hong Kong SAR, China
| | - Jiguang Wang
- Division of Life Science and State Key Laboratory of Molecular Neuroscience, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
- HKUST Shenzhen-Hong Kong Collaborative Innovation Research Institute, Shenzhen 518000, China
- Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
- Hong Kong Center for Neurodegenerative Diseases, Hong Kong Science Park, Hong Kong SAR, China
| |
Collapse
|
11
|
Youn BJ, Cheong HS, Namgoong S, Kim LH, Baek IK, Kim JH, Yoon SJ, Kim EH, Kim SH, Chang JH, Kim SH, Shin HD. Asian-specific 3'UTR variant in CDKN2B associated with risk of pituitary adenoma. Mol Biol Rep 2022; 49:10339-10346. [PMID: 36097105 DOI: 10.1007/s11033-022-07796-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 06/13/2022] [Accepted: 07/13/2022] [Indexed: 12/01/2022]
Abstract
BACKGROUND Previous genomewide association studies (GWASs), single nucleotide polymorphisms (SNPs) on cyclin-dependent kinase inhibitor 2 A (CDKN2A), cyclin-dependent kinase inhibitor 2B (CDKN2B), and cyclin-dependent kinase inhibitor 2B antisense RNA1 (CDKN2B-AS1) were reported as risk loci for glioma, a subgroup of the brain tumor. To further characterize this association with the risk of brain tumors in a Korean population, we performed a fine-mapping association study of CDKN2A, CDKN2B, and CDKN2B-AS1. METHODS AND RESULTS A total of 17 SNPs were selected and genotyped in 1,439 subjects which were comprised of 959 patients (pituitary adenoma 335; glioma 324; meningioma 300) and 480 population controls (PCs). We discovered that a 3'untranslated region (3'UTR) variant, rs181031884 of CDKN2B (Asian-specific variant), had significant association with the risk of pituitary adenoma (PA) (Odds ratio = 0.58, P = 0.00003). Also, rs181031884 appeared as an independent causal variant among the significant variants in CDKN2A and CDKN2B, and showed dose-dependent effects on PA. CONCLUSIONS Although further studies are needed to verify the impact of this variant on PA susceptibility, our results may help to understand CDKN2B polymorphism and the risk of PA.
Collapse
Affiliation(s)
- Byeong Ju Youn
- Department of Life Science, Sogang University, 04107, Seoul, Republic of Korea.,Forensic DNA Division, National Forensic Service, 26460, Wonju, Republic of Korea
| | - Hyun Sub Cheong
- Department of Genetic Epidemiology, SNP Genetics Inc, Seoul, Republic of Korea
| | - Suhg Namgoong
- Department of Genetic Epidemiology, SNP Genetics Inc, Seoul, Republic of Korea
| | - Lyoung Hyo Kim
- Department of Genetic Epidemiology, SNP Genetics Inc, Seoul, Republic of Korea
| | - In Ki Baek
- Department of Life Science, Sogang University, 04107, Seoul, Republic of Korea
| | - Jeong-Hyun Kim
- Asan Institute for Life Sciences, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Seon-Jin Yoon
- Department of Neurosurgery, Yonsei University College of Medicine, Seoul, Republic of Korea.,Department of Biochemistry and Molecular Biology, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Eui Hyun Kim
- Department of Neurosurgery, Yonsei University College of Medicine, Seoul, Republic of Korea.
| | - Se Hoon Kim
- Department of Pathology, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Jong Hee Chang
- Department of Neurosurgery, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Sun Ho Kim
- Department of Neurosurgery, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Hyoung Doo Shin
- Department of Life Science, Sogang University, 04107, Seoul, Republic of Korea. .,Department of Genetic Epidemiology, SNP Genetics Inc, Seoul, Republic of Korea. .,Research Institute for Basic Science, Sogang University, Seoul, Republic of Korea.
| |
Collapse
|
12
|
Genome-Wide Association Study Identifies Multiple Susceptibility Loci for Malignant Neoplasms of the Brain in Taiwan. J Pers Med 2022; 12:jpm12071161. [PMID: 35887658 PMCID: PMC9323978 DOI: 10.3390/jpm12071161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 07/04/2022] [Accepted: 07/14/2022] [Indexed: 11/22/2022] Open
Abstract
Primary brain malignancy is a rare tumor with a global incidence of less than 10 per 100,000 people. Hence, there is limited power for identifying risk loci in individual studies, especially for Han Chinese. We performed a genome-wide association study (GWAS) in Taiwan, including 195 cases and 195 controls. We identified five new genes for malignant neoplasms of the brain: EDARADD (rs645507, 1p31.3, p = 7.71 × 10−5, odds ratio (OR) = 1.893), RBFOX1 (rs8044700, p = 2.35 × 10−5, OR = 2.36), LMF1 (rs3751667, p = 7.24 × 10−7, OR = 2.17), DPP6 (rs67433368, p = 8.32 × 10−5, OR = 3.94), and NDUFB9 (rs7827791, p = 9.73 × 10−6, OR = 4.42). These data support that genetic susceptibility toward GBM or non-GBM tumors is highly distinct, likely reflecting different etiologies. Combined with signaling analysis, we found that RNA modification may be related to major risk factors in primary malignant neoplasms of the brain.
Collapse
|
13
|
Chen H, Guan Q, Guo H, Miao L, Zhuo Z. The Genetic Changes of Hepatoblastoma. Front Oncol 2021; 11:690641. [PMID: 34367972 PMCID: PMC8335155 DOI: 10.3389/fonc.2021.690641] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2021] [Accepted: 07/05/2021] [Indexed: 12/19/2022] Open
Abstract
Hepatoblastoma is the most common malignant liver cancer in childhood. The etiology of hepatoblastoma remains obscure. Hepatoblastoma is closely related to genetic syndromes, hinting that hepatoblastoma is a genetic predisposition disease. However, no precise exposures or genetic events are reported to hepatoblastoma occurrence. During the past decade, significant advances have been made in the understanding of etiology leading to hepatoblastoma, and several important genetic events that appear to be important for the development and progression of this tumor have been identified. Advances in our understanding of the genetic changes that underlie hepatoblastoma may translate into better patient outcomes. Single nucleotide polymorphisms (SNPs) have been generally applied in the research of etiology's exploration, disease treatment, and prognosis assessment. Here, we reviewed and discussed the molecular epidemiology, especially SNPs progresses in hepatoblastoma, to provide references for future studies and promote the study of hepatoblastoma's etiology.
Collapse
Affiliation(s)
- Huitong Chen
- Department of Pediatric Surgery, Guangzhou Institute of Pediatrics, Guangdong Provincial Key Laboratory of Research in Structural Birth Defect Disease, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Qian Guan
- Department of Pediatric Surgery, Guangzhou Institute of Pediatrics, Guangdong Provincial Key Laboratory of Research in Structural Birth Defect Disease, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou, China
- School of Medicine, South China University of Technology, Guangzhou, China
| | - Huiqin Guo
- Department of Pediatric Surgery, Guangzhou Institute of Pediatrics, Guangdong Provincial Key Laboratory of Research in Structural Birth Defect Disease, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou, China
- School of Medicine, South China University of Technology, Guangzhou, China
| | - Lei Miao
- Department of Pediatric Surgery, Guangzhou Institute of Pediatrics, Guangdong Provincial Key Laboratory of Research in Structural Birth Defect Disease, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Zhenjian Zhuo
- Department of Pediatric Surgery, Guangzhou Institute of Pediatrics, Guangdong Provincial Key Laboratory of Research in Structural Birth Defect Disease, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou, China
| |
Collapse
|
14
|
Wu AH, Fruin S, Larson TV, Tseng CC, Wu J, Yang J, Jain J, Shariff-Marco S, Inamdar PP, Setiawan VW, Porcel J, Stram DO, Le Marchand L, Ritz B, Cheng I. Association between Airport-Related Ultrafine Particles and Risk of Malignant Brain Cancer: A Multiethnic Cohort Study. Cancer Res 2021; 81:4360-4369. [PMID: 34167950 DOI: 10.1158/0008-5472.can-21-1138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 05/24/2021] [Accepted: 06/22/2021] [Indexed: 11/16/2022]
Abstract
Ultrafine particles (UFP; diameter less than or equal to 100 nm) may reach the brain via systemic circulation or the olfactory tract and have been implicated in the risk of brain tumors. The effects of airport-related UFP on the risk of brain tumors are not known. Here we determined the association between airport-related UFP and risk of incident malignant brain cancer (n = 155) and meningioma (n = 420) diagnosed during 16.4 years of follow-up among 75,936 men and women residing in Los Angeles County from the Multiethnic Cohort study. UFP exposure from aircrafts was estimated for participants who lived within a 53 km × 43 km grid area around the Los Angeles International Airport (LAX) from date of cohort entry (1993-1996) through December 31, 2013. Cox proportional hazards models were used to estimate the effects of time-varying, airport-related UFP exposure on risk of malignant brain cancer and meningioma, adjusting for sex, race/ethnicity, education, and neighborhood socioeconomic status. Malignant brain cancer risk in all subjects combined increased 12% [95% confidence interval (CI), 0.98-1.27] per interquartile range (IQR) of airport-related UFP exposure (∼6,700 particles/cm3) for subjects with any address in the grid area surrounding the LAX airport. In race/ethnicity-stratified analyses, African Americans, the subgroup who had the highest exposure, showed a HR of 1.32 (95% CI, 1.07-1.64) for malignant brain cancer per IQR in UFP exposure. UFP exposure was not related to risk of meningioma overall or by race/ethnicity. These results support the hypothesis that airport-related UFP exposure may be a risk factor for malignant brain cancers. SIGNIFICANCE: Malignant brain cancer risk increases with airport-related UFP exposure, particularly among African Americans, suggesting UFP exposure may be a modifiable risk factor for malignant brain cancer.
Collapse
Affiliation(s)
- Anna H Wu
- Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, California.
| | - Scott Fruin
- Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Timothy V Larson
- Department of Civil & Environmental Engineering, University of Washington, Seattle, Washington
| | - Chiu-Chen Tseng
- Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Jun Wu
- Department of Environmental and Occupational Health, Program in Public Health, Susan and Henry Samueli College of Health Sciences, University of Irvine, Irvine, California
| | - Juan Yang
- Department of Epidemiology and Biostatistics, University of California, San Francisco, San Francisco, California
| | | | - Salma Shariff-Marco
- Department of Epidemiology and Biostatistics, University of California, San Francisco, San Francisco, California
| | - Pushkar P Inamdar
- Department of Epidemiology and Biostatistics, University of California, San Francisco, San Francisco, California
| | - Veronica W Setiawan
- Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Jacqueline Porcel
- Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Daniel O Stram
- Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Loic Le Marchand
- Epidemiology Program, University of Hawaii Cancer Center, Honolulu, Hawaii
| | - Beate Ritz
- Department of Epidemiology, School of Public Health, University of California, Los Angeles, Los Angeles, California
| | - Iona Cheng
- Department of Epidemiology and Biostatistics, University of California, San Francisco, San Francisco, California
| |
Collapse
|
15
|
Ali MW, Patro CPK, Devall M, Dampier CH, Plummer SJ, Kuscu C, Adli M, Lai RK, Casey G. A Functional Variant on 9p21.3 Related to Glioma Risk Affects Enhancer Activity and Modulates Expression of CDKN2B-AS1. Hum Mutat 2021; 42:1208-1214. [PMID: 34153138 PMCID: PMC8519084 DOI: 10.1002/humu.24244] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 05/12/2021] [Accepted: 06/13/2021] [Indexed: 12/13/2022]
Abstract
Genome‐wide association studies have identified SNPs associated with glioma risk on 9p21.3, but biological mechanisms underlying this association are unknown. We tested the hypothesis that a functional SNP on 9p21.3 affects activity of an enhancer, causing altered expression of nearby genes. We considered all SNPs in linkage disequilibrium with the 9p21.3 sentinel SNP rs634537 that mapped to putative enhancers. An enhancer containing rs1537372 exhibited allele‐specific effects on luciferase activity. Deletion of this enhancer in GBM cell lines correlated with decreased expression of CDKN2B‐AS1. Expression quantitative trait loci analysis using non‐diseased brain samples showed rs1537372 to be a consistently significant eQTL for CDKN2B‐AS1. Additionally, our analysis of Hi‐C data generated in neural progenitor cells showed that the bait region containing rs1537372 interacted with the CDKN2B‐AS1 promoter. These data suggest rs1537372, a SNP at the 9p21.3 risk locus, is a functional variant that modulates expression of CDKN2B‐AS1.
Collapse
Affiliation(s)
- Mourad Wagdy Ali
- Department of Public Health Sciences, Center for Public Health Genomics, University of Virginia, Charlottesville, VA, 22908
| | - C Pawan K Patro
- Department of Neurology, Keck School of Medicine, University of Southern California, Los Angeles, CA, 90033
| | - Matthew Devall
- Department of Public Health Sciences, Center for Public Health Genomics, University of Virginia, Charlottesville, VA, 22908
| | - Christopher H Dampier
- Department of Public Health Sciences, Center for Public Health Genomics, University of Virginia, Charlottesville, VA, 22908
| | - Sarah J Plummer
- Department of Public Health Sciences, Center for Public Health Genomics, University of Virginia, Charlottesville, VA, 22908
| | - Cem Kuscu
- Department of Surgery, James D. Eason Transplant Research Institute, University of Tennessee, Memphis, TN, 38163
| | - Mazhar Adli
- Department of Obstetrics and Gynecology, Robert Lurie Comprehensive Cancer Center, Feinberg School of Medicine at Northwestern University, Chicago, IL, 60611
| | - Rose K Lai
- Departments of Neurology and Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, 90033
| | - Graham Casey
- Department of Public Health Sciences, Center for Public Health Genomics, University of Virginia, Charlottesville, VA, 22908
| |
Collapse
|
16
|
Zhou Q, Zhou J, Fan J. Expression and Prognostic Value of ARID5A and its Correlation With Tumor-Infiltrating Immune Cells in Glioma. Front Oncol 2021; 11:638803. [PMID: 34094918 PMCID: PMC8172138 DOI: 10.3389/fonc.2021.638803] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Accepted: 04/30/2021] [Indexed: 12/18/2022] Open
Abstract
AT-rich interaction domain 5A (ARID5A) is a member of the ARID family with a function that has been linked to autoimmune as well as inflammatory diseases. Some ARID family members are involved in the initiation and progression of human cancers. However, the function of ARID5A in glioma remains unknown. In this study, ARID5A expression levels were analyzed using the Gene Expression Profiling Interactive Analysis (GEPIA) database. Subsequently, the relationship between ARID5A expression and the clinical characteristics of glioma patients was evaluated using the Chinese Glioma Genome Atlas (CGGA) database and The Cancer Genome Atlas (TCGA) database. The prognostic value of ARID5A in glioma was estimated by Kaplan-Meier analysis and the receiver operating characteristic (ROC) curve analysis. Gene ontology (GO) analysis and gene set enrichment analysis (GSEA) were performed for functional prediction. The Tumor Immune Estimation Resource (TIMER) database was used to analyze the relationship between ARID5A and immune cell infiltration in glioma. Our results demonstrate that the expression of ARID5A was upregulated in glioma compared with that in nontumor brain tissues. High expression of ARID5A is associated with poor prognosis in glioma. We found that the expression of ARID5A was significantly upregulated with an increase in tumor malignancy. GO analysis revealed that co-expression genes of ARID5A are significantly involved in some important functions in glioma, and GSEA showed that multiple cancer-associated and immune-associated signaling pathways are enriched in the high ARID5A expression group. TIMER database indicated that ARID5A is correlated with tumor-infiltrating immune cells in glioma. Collectively, these findings indicate that ARID5A may be a potential prognostic biomarker and is correlated with immune infiltration in glioma.
Collapse
Affiliation(s)
- Quan Zhou
- Department of Pediatrics, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Jinping Zhou
- Department of Pediatrics, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Jingyi Fan
- Department of Pediatrics, Zhongnan Hospital of Wuhan University, Wuhan, China
| |
Collapse
|
17
|
Patro CPK, Nousome D, Lai RK. Meta-Analyses of Splicing and Expression Quantitative Trait Loci Identified Susceptibility Genes of Glioma. Front Genet 2021; 12:609657. [PMID: 33936159 PMCID: PMC8081720 DOI: 10.3389/fgene.2021.609657] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Accepted: 03/09/2021] [Indexed: 12/13/2022] Open
Abstract
Background The functions of most glioma risk alleles are unknown. Very few studies had evaluated expression quantitative trait loci (eQTL), and insights of susceptibility genes were limited due to scarcity of available brain tissues. Moreover, no prior study had examined the effect of glioma risk alleles on alternative RNA splicing. Objective This study explored splicing quantitative trait loci (sQTL) as molecular QTL and improved the power of QTL mapping through meta-analyses of both cis eQTL and sQTL. Methods We first evaluated eQTLs and sQTLs of the CommonMind Consortium (CMC) and Genotype-Tissue Expression Project (GTEx) using genotyping, or whole-genome sequencing and RNA-seq data. Alternative splicing events were characterized using an annotation-free method that detected intron excision events. Then, we conducted meta-analyses by pooling the eQTL and sQTL results of CMC and GTEx using the inverse variance-weighted model. Afterward, we integrated QTL meta-analysis results (Q < 0.05) with the Glioma International Case Control Study (GICC) GWAS meta-analysis (case:12,496, control:18,190), using a summary statistics-based mendelian randomization (SMR) method. Results Between CMC and GTEx, we combined the QTL data of 354 unique individuals of European ancestry. SMR analyses revealed 15 eQTLs in 11 loci and 32 sQTLs in 9 loci relevant to glioma risk. Two loci only harbored sQTLs (1q44 and 16p13.3). In seven loci, both eQTL and sQTL coexisted (2q33.3, 7p11.2, 11q23.3 15q24.2, 16p12.1, 20q13.33, and 22q13.1), but the target genes were different for five of these seven loci. Three eQTL loci (9p21.3, 20q13.33, and 22q13.1) and 4 sQTL loci (11q23.3, 16p13.3, 16q12.1, and 20q13.33) harbored multiple target genes. Eight target genes of sQTLs (C2orf80, SEC61G, TMEM25, PHLDB1, RP11-161M6.2, HEATR3, RTEL1-TNFRSF6B, and LIME1) had multiple alternatively spliced transcripts. Conclusion Our study revealed that the regulation of transcriptome by glioma risk alleles is complex, with the potential for eQTL and sQTL jointly affecting gliomagenesis in risk loci. QTLs of many loci involved multiple target genes, some of which were specific to alternative splicing. Therefore, quantitative trait loci that evaluate only total gene expression will miss many important target genes.
Collapse
Affiliation(s)
- C Pawan K Patro
- Department of Neurology and Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, Los Angeles, CA, United States
| | - Darryl Nousome
- Center for Prostate Disease Research, Department of Surgery, Uniformed Services University of the Health Sciences, Rockville, MD, United States
| | | | - Rose K Lai
- Department of Neurology and Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, Los Angeles, CA, United States
| |
Collapse
|
18
|
Yang Y, Cheng Y, Yang L, Shi G, Chen P, Li L, Fang H, Chen C, Jin T. The Influence of NDRG1 Single Nucleotide Polymorphisms on Glioma Risk and Prognosis in Chinese Han Population. Cell Mol Neurobiol 2021; 42:1949-1964. [PMID: 33709284 DOI: 10.1007/s10571-021-01075-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Accepted: 03/01/2021] [Indexed: 10/21/2022]
Abstract
Glioma is a highly fatal malignant tumor with a high recurrence rate, poor clinical treatment effect, and prognosis. We aimed to determine the association between single nucleotide polymorphisms (SNPs) of NDRG1 and glioma risk and prognosis in the Chinese Han population. 5 candidate SNPs were genotyped by Agena MassARRAY in 558 cases and 503 controls; logistic regression was used to analyze the relationship between SNPs and glioma risk. We used multi-factor dimensionality reduction to analyze the interaction of 'SNP-SNP'; the prognosis analysis was performed by log-rank test, Kaplan-Meier analysis, and Cox regression model. Our results showed that the polymorphisms of rs3808599 was associated with the reduction of glioma risk in all participants (OR 0.41, p = 0.024) and the participants ≤ 40 years old (OR 0.30, p = 0.020). rs3802251 may reduce glioma risk in all participants (OR 0.79, p = 0.008), the male participants (OR 0.68, p = 0.033), and astrocytoma patients (OR 0.81, p = 0.023). rs3779941 was associated with poor glioma prognosis in all participants (HR = 2.59, p = 0.039) or astrocytoma patients (HR = 2.63, p = 0.038). We also found that the key factors for glioma prognosis may include surgical operation, radiotherapy, and chemotherapy. This study is the first to find that NDRG1 gene polymorphisms may have a certain association with glioma risk or prognosis in the Chinese Han population.
Collapse
Affiliation(s)
- Yonghui Yang
- Clinical Laboratory, Xi'an 630 Hospital, Yanliang, Xi'an, 710000, Shaanxi, China
| | - Yimin Cheng
- Engineering Research Centre for Miniaturized Detection Systems, College of Life Science, Northwest University, Xi'an, People's Republic of China.,The Hospital of Xi'an Shiyou University, Xi'an, People's Republic of China
| | - Liting Yang
- Engineering Research Centre for Miniaturized Detection Systems, College of Life Science, Northwest University, Xi'an, People's Republic of China
| | - Guangyao Shi
- Engineering Research Centre for Miniaturized Detection Systems, College of Life Science, Northwest University, Xi'an, People's Republic of China
| | - Peng Chen
- Engineering Research Centre for Miniaturized Detection Systems, College of Life Science, Northwest University, Xi'an, People's Republic of China
| | - Liang Li
- Shaanxi Provincial Tumor Hospital, Xi'an, People's Republic of China
| | - Hangrong Fang
- Xi'an No. 3 Hospital, The Affiliated Hospital of Northwest University, Xi'an, People's Republic of China
| | - Chao Chen
- Engineering Research Centre for Miniaturized Detection Systems, College of Life Science, Northwest University, Xi'an, People's Republic of China
| | - Tianbo Jin
- Key Laboratory of Molecular Mechanism and Intervention Research for Plateau Diseases of Tibet Autonomous Region, School of Medicine, Xizang Minzu University, Xianyang, 712082, Shaanxi, China. .,Key Laboratory of Resource Biology and Biotechnology in Western China (Northwest University), Ministry of Education, School of Life Sciences, Northwest University, Xi'an, 710069, Shaanxi, China.
| |
Collapse
|
19
|
Foss-Skiftesvik J, Hagen CM, Mathiasen R, Adamsen D, Bækvad-Hansen M, Børglum AD, Nordentoft M, Werge T, Christiansen M, Schmiegelow K, Juhler M, Mortensen PB, Hougaard DM, Bybjerg-Grauholm J. Genome-wide association study across pediatric central nervous system tumors implicates shared predisposition and points to 1q25.2 (PAPPA2) and 11p12 (LRRC4C) as novel candidate susceptibility loci. Childs Nerv Syst 2021; 37:819-830. [PMID: 33226468 DOI: 10.1007/s00381-020-04946-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Accepted: 10/26/2020] [Indexed: 12/31/2022]
Abstract
INTRODUCTION Central nervous system (CNS) tumors constitute the most common form of solid neoplasms in children, but knowledge on genetic predisposition is sparse. In particular, whether susceptibility attributable to common variants is shared across CNS tumor types in children has not been investigated. The purpose of this study was to explore potential common genetic risk variants exhibiting pleiotropic effects across pediatric CNS tumors. We also investigated whether such susceptibility differs between early and late onset of disease. METHOD A Danish nationwide genome-wide association study (GWAS) of 1,097 consecutive patients (< 15 years of age) with CNS tumors and a cohort of 4,745 population-based controls. RESULTS For both the overall cohort and patients diagnosed after the age of four, the strongest association was rs12064625 which maps to PAPPA2 at 1q25.2 (p = 3.400 × 10-7 and 9.668 × 10-8, respectively). PAPPA2 regulates local bioavailability of insulin-like growth factor I (IGF-I). IGF-I is fundamental to CNS development and is involved in tumorigenesis across a wide range of different cancers. For the younger children, the strongest association was provided by rs11036373 mapping to LRRC4C at 11p12 (p = 7.620 × 10-7), which encoded protein acts as an axon guidance molecule during CNS development and has not formerly been associated with brain tumors. DISCUSSION This GWAS indicates shared susceptibility attributable to common variants across pediatric CNS tumor types. Variations in genetic loci with roles in CNS development appear to be involved, possibly via altered IGF-I related pathways.
Collapse
Affiliation(s)
- Jon Foss-Skiftesvik
- Department of Neurosurgery, Copenhagen University Hospital Rigshospitalet, Blegdamsvej 9, 2100, Copenhagen Ø, Denmark.
- Danish Center for Neonatal Screening, Department of Congenital Diseases, Statens Serum Institut, Copenhagen, Denmark.
- Department of Pediatrics and Adolescent Medicine, Rigshospitalet University Hospital, Copenhagen, Denmark.
| | - Christian Munch Hagen
- Danish Center for Neonatal Screening, Department of Congenital Diseases, Statens Serum Institut, Copenhagen, Denmark
- Institute of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- The Lundbeck Foundation Initiative for Integrative Psychiatric Research (iPSYCH), Copenhagen, Denmark
| | - René Mathiasen
- Department of Pediatrics and Adolescent Medicine, Rigshospitalet University Hospital, Copenhagen, Denmark
| | - Dea Adamsen
- Danish Center for Neonatal Screening, Department of Congenital Diseases, Statens Serum Institut, Copenhagen, Denmark
- The Lundbeck Foundation Initiative for Integrative Psychiatric Research (iPSYCH), Copenhagen, Denmark
| | - Marie Bækvad-Hansen
- Danish Center for Neonatal Screening, Department of Congenital Diseases, Statens Serum Institut, Copenhagen, Denmark
- The Lundbeck Foundation Initiative for Integrative Psychiatric Research (iPSYCH), Copenhagen, Denmark
| | - Anders D Børglum
- The Lundbeck Foundation Initiative for Integrative Psychiatric Research (iPSYCH), Copenhagen, Denmark
- Department of Biomedicine, Aarhus University and Centre for Integrative Sequencing, iSEQ, Aarhus, Denmark
- Aarhus Genome Center, Aarhus, Denmark
| | - Merete Nordentoft
- Institute of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- The Lundbeck Foundation Initiative for Integrative Psychiatric Research (iPSYCH), Copenhagen, Denmark
- Mental Health Centre Copenhagen, Copenhagen University Hospital, Copenhagen, Denmark
| | - Thomas Werge
- Institute of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- The Lundbeck Foundation Initiative for Integrative Psychiatric Research (iPSYCH), Copenhagen, Denmark
- Institute of Biological Psychiatry, Mental Health Centre Sct. Hans, Mental Health Services Copenhagen, Roskilde, Denmark
| | - Michael Christiansen
- Danish Center for Neonatal Screening, Department of Congenital Diseases, Statens Serum Institut, Copenhagen, Denmark
- The Lundbeck Foundation Initiative for Integrative Psychiatric Research (iPSYCH), Copenhagen, Denmark
| | - Kjeld Schmiegelow
- Department of Pediatrics and Adolescent Medicine, Rigshospitalet University Hospital, Copenhagen, Denmark
- Institute of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Marianne Juhler
- Department of Neurosurgery, Copenhagen University Hospital Rigshospitalet, Blegdamsvej 9, 2100, Copenhagen Ø, Denmark
- Institute of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- Department of Neurosurgery, Aarhus University Hospital, Aarhus, Denmark
| | - Preben Bo Mortensen
- The Lundbeck Foundation Initiative for Integrative Psychiatric Research (iPSYCH), Copenhagen, Denmark
- National Centre for Register-based Research, Department of Economics and Business Economics, Aarhus University, Aarhus, Denmark
- Centre for Integrated Register-Based Research, Aarhus University, Aarhus, Denmark
| | - David Michael Hougaard
- Danish Center for Neonatal Screening, Department of Congenital Diseases, Statens Serum Institut, Copenhagen, Denmark
- The Lundbeck Foundation Initiative for Integrative Psychiatric Research (iPSYCH), Copenhagen, Denmark
| | - Jonas Bybjerg-Grauholm
- Danish Center for Neonatal Screening, Department of Congenital Diseases, Statens Serum Institut, Copenhagen, Denmark
- The Lundbeck Foundation Initiative for Integrative Psychiatric Research (iPSYCH), Copenhagen, Denmark
| |
Collapse
|
20
|
Robinson JW, Martin RM, Tsavachidis S, Howell AE, Relton CL, Armstrong GN, Bondy M, Zheng J, Kurian KM. Transcriptome-wide Mendelian randomization study prioritising novel tissue-dependent genes for glioma susceptibility. Sci Rep 2021; 11:2329. [PMID: 33504897 PMCID: PMC7840943 DOI: 10.1038/s41598-021-82169-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Accepted: 01/07/2021] [Indexed: 12/29/2022] Open
Abstract
Genome-wide association studies (GWAS) have discovered 27 loci associated with glioma risk. Whether these loci are causally implicated in glioma risk, and how risk differs across tissues, has yet to be systematically explored. We integrated multi-tissue expression quantitative trait loci (eQTLs) and glioma GWAS data using a combined Mendelian randomisation (MR) and colocalisation approach. We investigated how genetically predicted gene expression affects risk across tissue type (brain, estimated effective n = 1194 and whole blood, n = 31,684) and glioma subtype (all glioma (7400 cases, 8257 controls) glioblastoma (GBM, 3112 cases) and non-GBM gliomas (2411 cases)). We also leveraged tissue-specific eQTLs collected from 13 brain tissues (n = 114 to 209). The MR and colocalisation results suggested that genetically predicted increased gene expression of 12 genes were associated with glioma, GBM and/or non-GBM risk, three of which are novel glioma susceptibility genes (RETREG2/FAM134A, FAM178B and MVB12B/FAM125B). The effect of gene expression appears to be relatively consistent across glioma subtype diagnoses. Examining how risk differed across 13 brain tissues highlighted five candidate tissues (cerebellum, cortex, and the putamen, nucleus accumbens and caudate basal ganglia) and four previously implicated genes (JAK1, STMN3, PICK1 and EGFR). These analyses identified robust causal evidence for 12 genes and glioma risk, three of which are novel. The correlation of MR estimates in brain and blood are consistently low which suggested that tissue specificity needs to be carefully considered for glioma. Our results have implicated genes yet to be associated with glioma susceptibility and provided insight into putatively causal pathways for glioma risk.
Collapse
Affiliation(s)
- Jamie W Robinson
- MRC Integrative Epidemiology Unit, University of Bristol, Bristol, BS8 2BN, UK.
| | - Richard M Martin
- MRC Integrative Epidemiology Unit, University of Bristol, Bristol, BS8 2BN, UK
- Department of Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, BS8 1UD, UK
- National Institute for Health Research (NIHR) Bristol Biomedical Research Centre, University Hospitals Bristol and University of Bristol, Bristol, UK
| | - Spiridon Tsavachidis
- Department of Medicine, Section of Epidemiology and Population Sciences, Dan L. Duncan, Comprehensive Cancer Centre, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Amy E Howell
- MRC Integrative Epidemiology Unit, University of Bristol, Bristol, BS8 2BN, UK
| | - Caroline L Relton
- MRC Integrative Epidemiology Unit, University of Bristol, Bristol, BS8 2BN, UK
| | - Georgina N Armstrong
- Department of Epidemiology and Population Health, Stanford University, Stanford, CA, 94305, USA
| | - Melissa Bondy
- Department of Epidemiology and Population Health, Stanford University, Stanford, CA, 94305, USA
| | - Jie Zheng
- MRC Integrative Epidemiology Unit, University of Bristol, Bristol, BS8 2BN, UK
| | - Kathreena M Kurian
- MRC Integrative Epidemiology Unit, University of Bristol, Bristol, BS8 2BN, UK.
- Brain Tumour Research Centre, Bristol, BS10 5NB, UK.
| |
Collapse
|
21
|
Ali MW, Patro CPK, Zhu JJ, Dampier CH, Plummer SJ, Kuscu C, Adli M, Lau C, Lai RK, Casey G. A functional variant on 20q13.33 related to glioma risk alters enhancer activity and modulates expression of multiple genes. Hum Mutat 2020; 42:77-88. [PMID: 33169458 PMCID: PMC7839675 DOI: 10.1002/humu.24134] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 10/15/2020] [Accepted: 10/30/2020] [Indexed: 12/22/2022]
Abstract
Genome‐wide association studies (GWAS) have identified single‐nucleotide polymorphisms (SNPs) associated with glioma risk on 20q13.33, but the biological mechanisms underlying this association are unknown. We tested the hypothesis that a functional SNP on 20q13.33 impacted the activity of an enhancer, leading to an altered expression of nearby genes. To identify candidate functional SNPs, we identified all SNPs in linkage disequilibrium with the risk‐associated SNP rs2297440 that mapped to putative enhancers. Putative enhancers containing candidate functional SNPs were tested for allele‐specific effects in luciferase enhancer activity assays against glioblastoma multiforme (GBM) cell lines. An enhancer containing SNP rs3761124 exhibited allele‐specific effects on activity. Deletion of this enhancer by CRISPR‐Cas9 editing in GBM cell lines correlated with an altered expression of multiple genes, including STMN3, RTEL1, RTEL1‐TNFRSF6B, GMEB2, and SRMS. Expression quantitative trait loci (eQTL) analyses using nondiseased brain samples, isocitrate dehydrogenase 1 (IDH1) wild‐type glioma, and neurodevelopmental tissues showed STMN3 to be a consistent significant eQTL with rs3761124. RTEL1 and GMEB2 were also significant eQTLs in the context of early CNS development and/or in IDH1 wild‐type glioma. We provide evidence that rs3761124 is a functional variant on 20q13.33 related to glioma/GBM risk that modulates the expression of STMN3 and potentially other genes across diverse cellular contexts.
Collapse
Affiliation(s)
- Mourad Wagdy Ali
- Department of Public Health Sciences, Center for Public Health Genomics, University of Virginia, Charlottesville, Virginia, USA
| | - C Pawan K Patro
- Department of Neurology, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
| | | | - Christopher H Dampier
- Department of Public Health Sciences, Center for Public Health Genomics, University of Virginia, Charlottesville, Virginia, USA
| | - Sarah J Plummer
- Department of Public Health Sciences, Center for Public Health Genomics, University of Virginia, Charlottesville, Virginia, USA
| | - Cem Kuscu
- Department of Surgery, James D. Eason Transplant Research Institute, University of Tennessee, Memphis, Tennessee, USA
| | - Mazhar Adli
- Department of Obstetrics and Gynecology, Robert Lurie Comprehensive Cancer Center, Feinberg School of Medicine at Northwestern University, Chicago, Illinois, USA
| | - Ching Lau
- The Jackson Laboratory for Genomic Medicine, Farmington, Connecticut, USA
| | - Rose K Lai
- Departments of Neurology and Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
| | - Graham Casey
- Department of Public Health Sciences, Center for Public Health Genomics, University of Virginia, Charlottesville, Virginia, USA
| |
Collapse
|
22
|
Qiu G, Tong W, Jiang C, Xie Q, Zou J, Luo C, Zhao J, Zhang L, Zhao J. Long Noncoding RNA WT1-AS Inhibit Cell Malignancy via miR-494-3p in Glioma. Technol Cancer Res Treat 2020; 19:1533033820919759. [PMID: 32419643 PMCID: PMC7235650 DOI: 10.1177/1533033820919759] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Primary brain tumors are a rare occurrence in comparison to other malignancies, the most predominant form being glioma. Commonly, exposure to ionizing radiations and inheritance of associated conditions such a neurofibromatosis and tuberous sclerosis are the most common causes of development of glioma. However, understanding of the molecular mechanisms that drive glioma development is limited. We explore the role of aberration of microRNA namely miR-494-3p through long noncoding RNA WT1-AS in the development of gliomas. In this study, we found that, levels of WT1-AS were significantly reduced in glioma tissues and cell lines. The miR-494-3p levels were negatively correlated with WT1-AS levels. The cellular proliferation and invasiveness decreased in WT1-AS transfected cell lines. Further the half maximal inhibitory concentration (IC50) of chemotherapeutic agent temozolomide was significantly reduced in the presence of WT1-AS. The cotransfection of WT1-AS and miR-494-3p reduced activation of phospho-AKT (p-AKT). Expression of miR-494-3p is modulated by binding to long noncoding RNA WT1-AS. Deregulation of WT1-AS leads to aberrant expression of miR-494-3p leading to hyperactivation of AKT. This malformation may result in altering protective immune responses in malignancies. Targeting of WT1-AS, miR-494-3p, and AKT may be novel therapeutic options in treatment of glioma.
Collapse
Affiliation(s)
- Guangting Qiu
- Department of Neurosurgery, Translational Research Institute of Brain and Brain-Like Intelligence, Shanghai Fourth People's Hospital Affiliated to Tongji University School of Medicine, Shanghai, China
| | - Wenjie Tong
- Department of Neurosurgery, Songjiang Hospital Affiliated to the First People's Hospital Shanghai Jiao Tong University, Shanghai, China
| | - Chenghao Jiang
- Department of Neurosurgery, Translational Research Institute of Brain and Brain-Like Intelligence, Shanghai Fourth People's Hospital Affiliated to Tongji University School of Medicine, Shanghai, China
| | - Qingsong Xie
- Department of Neurosurgery, Translational Research Institute of Brain and Brain-Like Intelligence, Shanghai Fourth People's Hospital Affiliated to Tongji University School of Medicine, Shanghai, China
| | - Jingfang Zou
- Department of Neurosurgery, Translational Research Institute of Brain and Brain-Like Intelligence, Shanghai Fourth People's Hospital Affiliated to Tongji University School of Medicine, Shanghai, China
| | - Cong Luo
- Department of Neurosurgery, Translational Research Institute of Brain and Brain-Like Intelligence, Shanghai Fourth People's Hospital Affiliated to Tongji University School of Medicine, Shanghai, China
| | - Jianwei Zhao
- Department of Neurosurgery, Translational Research Institute of Brain and Brain-Like Intelligence, Shanghai Fourth People's Hospital Affiliated to Tongji University School of Medicine, Shanghai, China
| | - Lu Zhang
- Department of Neurosurgery, Translational Research Institute of Brain and Brain-Like Intelligence, Shanghai Fourth People's Hospital Affiliated to Tongji University School of Medicine, Shanghai, China
| | - Jiang Zhao
- Department of Neurosurgery, Translational Research Institute of Brain and Brain-Like Intelligence, Shanghai Fourth People's Hospital Affiliated to Tongji University School of Medicine, Shanghai, China
| |
Collapse
|
23
|
Azam Z, TO ST, Tannous BA. Mesenchymal Transformation: The Rosetta Stone of Glioblastoma Pathogenesis and Therapy Resistance. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2020; 7:2002015. [PMID: 33240762 PMCID: PMC7675056 DOI: 10.1002/advs.202002015] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 07/23/2020] [Indexed: 05/06/2023]
Abstract
Despite decades of research, glioblastoma (GBM) remains invariably fatal among all forms of cancers. The high level of inter- and intratumoral heterogeneity along with its biological location, the brain, are major barriers against effective treatment. Molecular and single cell analysis identifies different molecular subtypes with varying prognosis, while multiple subtypes can reside in the same tumor. Cellular plasticity among different subtypes in response to therapies or during recurrence adds another hurdle in the treatment of GBM. This phenotypic shift is induced and sustained by activation of several pathways within the tumor itself, or microenvironmental factors. In this review, the dynamic nature of cellular shifts in GBM and how the tumor (immune) microenvironment shapes this process leading to therapeutic resistance, while highlighting emerging tools and approaches to study this dynamic double-edged sword are discussed.
Collapse
Affiliation(s)
- Zulfikar Azam
- Experimental Therapeutics and Molecular Imaging UnitDepartment of NeurologyNeuro‐Oncology DivisionMassachusetts General Hospital and Harvard Medical SchoolBostonMA02129USA
- Department of Health Technology and InformaticsThe Hong Kong Polytechnic UniversityHong Kong999077China
| | - Shing‐Shun Tony TO
- Department of Health Technology and InformaticsThe Hong Kong Polytechnic UniversityHong Kong999077China
| | - Bakhos A. Tannous
- Experimental Therapeutics and Molecular Imaging UnitDepartment of NeurologyNeuro‐Oncology DivisionMassachusetts General Hospital and Harvard Medical SchoolBostonMA02129USA
| |
Collapse
|
24
|
Sun M, Fang Y, Ma S, Gao X, Sun Y. The genetic polymorphisms of angiotensin converting enzyme insertion/deletion and glioma susceptibility: A meta-analysis. J Renin Angiotensin Aldosterone Syst 2020; 21:1470320320963939. [PMID: 33045911 PMCID: PMC7557697 DOI: 10.1177/1470320320963939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
Objective: The previous studies on angiotensin converting enzyme (ACE) insertion/deletion (I/D) genetic polymorphism and glioma risk were inconsistent. Therefore, we performed a meta-analysis to assess the association between ACE I/D polymorphisms and glioma risk. Methods and Results: In total, four populations (1110 cases and 1335 controls) on ACE I/D polymorphism were included. Overall, the meta-analysis demonstrated no significant association between ACE I/D polymorphism and glioma risk. In addition, the analysis of the association of ACE I/D polymorphism and clinical grade also showed no significant association. Conclusion: Our meta-analysis didn’t find a significant association between ACE I/D polymorphism glioma risk. However, further studies with larger sample size and more ethnic groups are required to confirm the results.
Collapse
Affiliation(s)
- Meili Sun
- Department of Oncology, Jinan Central Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, P.R. China.,Department of Oncology, Central Hospital Affiliated to Shandong First Medical University, Jinan, P.R. China
| | - Yuying Fang
- Department of Oncology, Jinan Central Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, P.R. China
| | - Shuzhen Ma
- Department of Oncology, Jinan Central Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, P.R. China.,Department of Oncology, Central Hospital Affiliated to Shandong First Medical University, Jinan, P.R. China
| | - Ximei Gao
- Department of International Medicine, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, P.R. China
| | - Yuping Sun
- Department of Oncology, Jinan Central Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, P.R. China.,Department of Oncology, Central Hospital Affiliated to Shandong First Medical University, Jinan, P.R. China
| |
Collapse
|
25
|
Feng J, Ouyang Y, Xu D, He Q, Liu D, Fan X, Xu P, Mo Y. Genetic variants in MIR17HG affect the susceptibility and prognosis of glioma in a Chinese Han population. BMC Cancer 2020; 20:976. [PMID: 33036577 PMCID: PMC7547478 DOI: 10.1186/s12885-020-07417-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2019] [Accepted: 09/15/2020] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND lncRNA MIR17HG was upregulated in glioma, and participated in promoting proliferation, migration and invasion of glioma. However, the role of MIR17HG polymorphisms in the occurrence and prognosis of glioma is still unclear. METHODS In the study, 592 glioma patients and 502 control subjects were recruited. Agena MassARRAY platform was used to detect the genotype of MIR17HG polymorphisms. Logistic regression analysis was used to evaluate the relationship between MIR17HG single nucleotide polymorphisms (SNPs) and glioma risk by odds ratio (OR) and 95% confidence intervals (CIs). Kaplan-Meier curves, Cox hazards models were performed for assessing the role of these SNPs in glioma prognosis by hazard ratios (HR) and 95% CIs. RESULTS We found that rs7318578 (OR = 2.25, p = 3.18 × 10- 5) was significantly associated with glioma susceptibility in the overall participants. In the subgroup with age < 40 years, rs17735387 (OR = 1.53, p = 9.05 × 10- 3) and rs7336610 (OR = 1.35, p = 0.016) were related to the higher glioma susceptibility. More importantly, rs17735387 (HR = 0.82, log-rank p = 0.026) were associated with the longer survival of glioma patients. The GA genotype of rs17735387 had a better overall survival (HR = 0.75, log-rank p = 0.013) and progression free survival (HR = 0.73, log-rank p = 0.032) in patients with I-II glioma. We also found that rs72640334 was related to the poor prognosis (HR = 1.49, Log-rank p = 0.035) in female patients. In the subgroup of patients with age ≥ 40 years, rs17735387 was associated with a better prognosis (HR = 0.036, Log-rank p = 0.002). CONCLUSION Our study firstly reported that MIR17HG rs7318578 was a risk factor for glioma susceptibility and rs17735387 was associated with the longer survival of glioma among Chinese Han population, which might help to enhance the understanding of MIR17HG gene in gliomagenesis. In subsequent studies, we will continue to collect samples and follow up to further validate our findings and further explore the function of these MIR17HG SNPs in glioma in a larger sample size.
Collapse
Affiliation(s)
- Jigao Feng
- Department of Neurosurgery, the Second Affiliated Hospital of Hainan Medical University, #48 Baishuitang Road, Haikou, 570311, Hainan, China
| | - Yibin Ouyang
- Department of Neurosurgery, the Second Affiliated Hospital of Hainan Medical University, #48 Baishuitang Road, Haikou, 570311, Hainan, China
| | - Dedong Xu
- Department of Neurosurgery, the Second Affiliated Hospital of Hainan Medical University, #48 Baishuitang Road, Haikou, 570311, Hainan, China
| | - Qinglong He
- Department of Neurosurgery, the Second Affiliated Hospital of Hainan Medical University, #48 Baishuitang Road, Haikou, 570311, Hainan, China
| | - Dayuan Liu
- Department of Neurosurgery, the Second Affiliated Hospital of Hainan Medical University, #48 Baishuitang Road, Haikou, 570311, Hainan, China
| | - Xudong Fan
- Department of Neurosurgery, the Second Affiliated Hospital of Hainan Medical University, #48 Baishuitang Road, Haikou, 570311, Hainan, China
| | - Pengxiang Xu
- Department of Neurosurgery, the Second Affiliated Hospital of Hainan Medical University, #48 Baishuitang Road, Haikou, 570311, Hainan, China
| | - Yehe Mo
- Department of Neurosurgery, the Second Affiliated Hospital of Hainan Medical University, #48 Baishuitang Road, Haikou, 570311, Hainan, China.
| |
Collapse
|
26
|
To SS, Azam Z, Shao W, Ng HK, Wang J, Chen ZP. Comprehensive RNAseq analysis reveals PIK3CD promotes glioblastoma tumorigenesis by mediating PI3K-Akt signaling pathway. GLIOMA 2020. [DOI: 10.4103/glioma.glioma_23_20] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
|
27
|
González-Castro TB, Juárez-Rojop IE, López-Narváez ML, Tovilla-Zárate CA, Genis-Mendoza AD, Pérez-Hernández N, Martínez-Magaña JJ, Rodríguez-Pérez JM. Genetic Polymorphisms of CCDC26 rs891835, rs6470745, and rs55705857 in Glioma Risk: A Systematic Review and Meta-analysis. Biochem Genet 2019; 57:583-605. [DOI: 10.1007/s10528-019-09911-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Accepted: 02/07/2019] [Indexed: 01/03/2023]
|
28
|
Howell AE, Zheng J, Haycock PC, McAleenan A, Relton C, Martin RM, Kurian KM. Use of Mendelian Randomization for Identifying Risk Factors for Brain Tumors. Front Genet 2018; 9:525. [PMID: 30483309 PMCID: PMC6240585 DOI: 10.3389/fgene.2018.00525] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Accepted: 10/19/2018] [Indexed: 02/06/2023] Open
Abstract
Gliomas are a group of primary brain tumors, the most common and aggressive subtype of which is glioblastoma. Glioblastoma has a median survival of just 15 months after diagnosis. Only previous exposure to ionizing radiation and particular inherited genetic syndromes are accepted risk factors for glioma; the vast majority of cases are thought to occur spontaneously. Previous observational studies have described associations between several risk factors and glioma, but studies are often conflicting and whether these associations reflect true casual relationships is unclear because observational studies may be susceptible to confounding, measurement error and reverse causation. Mendelian randomization (MR) is a form of instrumental variable analysis that can be used to provide supporting evidence for causal relationships between exposures (e.g., risk factors) and outcomes (e.g., disease onset). MR utilizes genetic variants, such as single nucleotide polymorphisms (SNPs), that are robustly associated with an exposure to determine whether there is a causal effect of the exposure on the outcome. MR is less susceptible to confounding, reverse causation and measurement errors as it is based on the random inheritance during conception of genetic variants that can be relatively accurately measured. In previous studies, MR has implicated a genetically predicted increase in telomere length with an increased risk of glioma, and found little evidence that obesity related factors, vitamin D or atopy are causal in glioma risk. In this review, we describe MR and its potential use to discover and validate novel risk factors, mechanistic factors, and therapeutic targets in glioma.
Collapse
Affiliation(s)
- Amy Elizabeth Howell
- Brain Tumour Research Centre, Institute of Clinical Neurosciences, University of Bristol, Bristol, United Kingdom
| | - Jie Zheng
- MRC Integrative Epidemiology Unit, Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, United Kingdom
| | - Philip C. Haycock
- MRC Integrative Epidemiology Unit, Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, United Kingdom
| | - Alexandra McAleenan
- Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, United Kingdom
| | - Caroline Relton
- MRC Integrative Epidemiology Unit, Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, United Kingdom
| | - Richard M. Martin
- MRC Integrative Epidemiology Unit, Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, United Kingdom
| | - Kathreena M. Kurian
- Brain Tumour Research Centre, Institute of Clinical Neurosciences, University of Bristol, Bristol, United Kingdom
| |
Collapse
|