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Clinical utility of comprehensive genomic profiling in central nervous system tumors of children and young adults
- Source :
- Neuro-oncology Advances
- Publication Year :
- 2021
- Publisher :
- Oxford University Press, 2021.
-
Abstract
- Background Recent large-scale genomic studies have revealed a spectrum of genetic variants associated with specific subtypes of central nervous system (CNS) tumors. The aim of this study was to determine the clinical utility of comprehensive genomic profiling of pediatric, adolescent and young adult (AYA) CNS tumors in a prospective setting, including detection of DNA sequence variants, gene fusions, copy number alterations (CNAs), and loss of heterozygosity. Methods OncoKids, a comprehensive DNA- and RNA-based next-generation sequencing (NGS) panel, in conjunction with chromosomal microarray analysis (CMA) was employed to detect diagnostic, prognostic, and therapeutic markers. NGS was performed on 222 specimens from 212 patients. Clinical CMA data were analyzed in parallel for 66% (146/222) of cases. Results NGS demonstrated clinically significant alterations in 66% (147/222) of cases. Diagnostic markers were identified in 62% (138/222) of cases. Prognostic information and targetable genomic alterations were identified in 22% (49/222) and 18% (41/222) of cases, respectively. Diagnostic or prognostic CNAs were revealed by CMA in 69% (101/146) of cases. Importantly, clinically significant CNAs were detected in 57% (34/60) of cases with noncontributory NGS results. Germline cancer predisposition testing was indicated for 27% (57/212) of patients. Follow-up germline testing was performed for 20 patients which confirmed a germline pathogenic/likely pathogenic variant in 9 cases: TP53 (2), NF1 (2), SMARCB1 (1), NF2 (1), MSH6 (1), PMS2 (1), and a patient with 47,XXY Klinefelter syndrome. Conclusions Our results demonstrate the significant clinical utility of integrating genomic profiling into routine clinical testing for pediatric and AYA patients with CNS tumors.
- Subjects :
- 0301 basic medicine
Oncology
medicine.medical_specialty
Germline
NGS oncology panel
Loss of heterozygosity
03 medical and health sciences
0302 clinical medicine
Internal medicine
PMS2
Medicine
AcademicSubjects/MED00300
SMARCB1
business.industry
Cancer
CNS tumors
medicine.disease
MSH6
Gene expression profiling
QKI–RAF1
030104 developmental biology
Basic and Translational Investigations
chromosomal microarray analysis
AcademicSubjects/MED00310
Klinefelter syndrome
business
030217 neurology & neurosurgery
NTRK
Subjects
Details
- Language :
- English
- ISSN :
- 26322498
- Volume :
- 3
- Issue :
- 1
- Database :
- OpenAIRE
- Journal :
- Neuro-oncology Advances
- Accession number :
- edsair.doi.dedup.....0615b9370f2d604301ec43c4c6e5a09c