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Chan AKY, Shi ZF, Li KKW, Wang WW, Chen H, Chung NYF, Chan DTM, Poon WS, Loong HHF, Liu XZ, Zhang ZY, Mao Y, Ng HK. Combinations of Single-Gene Biomarkers Can Precisely Stratify 1,028 Adult Gliomas for Prognostication. Front Oncol 2022; 12:839302. [PMID: 35558510 PMCID: PMC9090434 DOI: 10.3389/fonc.2022.839302] [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] [Received: 12/19/2021] [Accepted: 03/04/2022] [Indexed: 11/23/2022] Open
Abstract
Advanced genomic techniques have now been incorporated into diagnostic practice in neuro-oncology in the literature. However, these assays are expensive and time-consuming and demand bioinformatics expertise for data interpretation. In contrast, single-gene tests can be run much more cheaply, with a short turnaround time, and are available in general pathology laboratories. The objective of this study was to establish a molecular grading scheme for adult gliomas using combinations of commonly available single-gene tests. We retrospectively evaluated molecular diagnostic data of 1,275 cases of adult diffuse gliomas from three institutions where we were testing for IDH1/2 mutation, TERTp mutation, 1p19q codeletion, EGFR amplification, 10q deletion, BRAF V600E, and H3 mutations liberally in our regular diagnostic workup. We found that a molecular grading scheme of Group 1 (1p19q codeleted, IDH mutant), Group 2 (IDH mutant, 1p19q non-deleted, TERT mutant), Group 3 (IDH mutant, 1p19q non-deleted, TERT wild type), Group 4 (IDH wild type, BRAF mutant), Group 5 (IDH wild type, BRAF wild type and not possessing the criteria of Group 6), and Group 6 (IDH wild type, and any one of TERT mutant, EGFR amplification, 10q deletion, or H3 mutant) could significantly stratify this large cohort of gliomas for risk. A total of 1,028 (80.6%) cases were thus classifiable with sufficient molecular data. There were 270 cases of molecular Group 1, 59 cases of molecular Group 2, 248 cases of molecular Group 3, 27 cases of molecular Group 4, 117 cases of molecular Group 5, and 307 cases of molecular Group 6. The molecular groups were independent prognosticators by multivariate analyses and in specific instances, superseded conventional histological grades. We were also able to validate the usefulness of the Groups with a cohort retrieved from The Cancer Genome Atlas (TCGA) where similar molecular tests were liberally available. We conclude that a single-gene molecular stratification system, useful for fine prognostication, is feasible and can be adopted by a general pathology laboratory.
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Affiliation(s)
- Aden Ka-Yin Chan
- Department of Anatomical and Cellular Pathology, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China.,Hong Kong and Shanghai Brain Consortium (HSBC), Hong Kong, Hong Kong SAR, China
| | - Zhi-Feng Shi
- Hong Kong and Shanghai Brain Consortium (HSBC), Hong Kong, Hong Kong SAR, China.,Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai, China
| | - Kay Ka-Wai Li
- Department of Anatomical and Cellular Pathology, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China.,Hong Kong and Shanghai Brain Consortium (HSBC), Hong Kong, Hong Kong SAR, China
| | - Wei-Wei Wang
- Department of Pathology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Hong Chen
- Department of Pathology, Huashan Hospital, Fudan University, Shanghai, China
| | - Nellie Yuk-Fei Chung
- Department of Anatomical and Cellular Pathology, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
| | - Danny Tat-Ming Chan
- Division of Neurosurgery, Department of Surgery, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
| | - Wai-Sang Poon
- Division of Neurosurgery, Department of Surgery, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
| | - Herbert Ho-Fung Loong
- Department of Clinical Oncology, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
| | - Xian-Zhi Liu
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Zhen-Yu Zhang
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Ying Mao
- Hong Kong and Shanghai Brain Consortium (HSBC), Hong Kong, Hong Kong SAR, China.,Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai, China
| | - Ho-Keung Ng
- Department of Anatomical and Cellular Pathology, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China.,Hong Kong and Shanghai Brain Consortium (HSBC), Hong Kong, Hong Kong SAR, China
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