Title

Analysis of cell-free circulating tumor DNA in 419 patients with glioblastoma and other primary brain tumors.

Authors

David E Piccioni
Achal Singh Achrol, Department of Neurosurgery and Neurosciences, John Wayne Cancer Institute and Pacific Neuroscience Institute, Santa Monica, CA, USAFollow
Lesli A Kiedrowski
Kimberly C Banks
Najee Boucher, Department of Translational Neurosciences and Neurotherapeutics, Pacific Neuroscience Institute, John Wayne Cancer Institute at Providence Saint John's Health Center, Santa Monica, CA, USAFollow
Garni Barkhoudarian, John Wayne Cancer Institute Santa Monica, California.Follow
Daniel F Kelly, Pacific Neuroscience Institute, Brain Tumor Center & Pituitary Disorders Program, John Wayne Cancer Institute at Providence Saint John's Health Center, 2200 Santa Monica Blvd., Santa Monica, CA, 90404, USA.Follow
Tiffany Juarez, Department of Translational Neurosciences and Neurotherapeutics, Pacific Neuroscience Institute, John Wayne Cancer Institute, Providence Saint John's Health Center, Santa Monica, CA, USA.Follow
Richard B Lanman
Victoria M Raymond
Minhdan Nguyen, Department of Translational Neurosciences and Neurotherapeutics, Pacific Neuroscience Institute, John Wayne Cancer Institute at Providence Saint John's Health Center, Santa Monica, CA, USAFollow
Judy D Truong, Department of Translational Neurosciences and Neurotherapeutics, Pacific Neuroscience Institute, John Wayne Cancer Institute at Providence Saint John's Health Center, Santa Monica, CA, USAFollow
Annie Heng, Department of Translational Neurosciences and Neurotherapeutics, Pacific Neuroscience Institute, John Wayne Cancer Institute at Providence Saint John's Health Center, Santa Monica, CA, USAFollow
Jaya Mini Gill, John Wayne Cancer InstituteFollow
Marlon G Saria, Department of Translational Neurosciences and Neurotherapeutics, Pacific Neuroscience Institute and John Wayne Cancer Institute at Providence Saint John's Health Center, Santa Monica, CaliforniaFollow
Sandeep C Pingle
Santosh Kesari, Department of Translational Neurosciences and Neurotherapeutics, Pacific Neuroscience Institute, John Wayne Cancer Institute at Providence Saint John's Health Center, Santa Monica, CA, USAFollow

Document Type

Article

Publication Date

3-11-2019

Publication Title

CNS Oncol

Keywords

Guardant360; cell-free DNA; ctDNA; genomic profiling; glioblastoma; liquid biopsy; personalized medicine; primary brain tumors

Abstract

AIM: Genomically matched trials in primary brain tumors (PBTs) require recent tumor sequencing. We evaluated whether circulating tumor DNA (ctDNA) could facilitate genomic interrogation in these patients.

METHODS: Data from 419 PBT patients tested clinically with a ctDNA NGS panel at a CLIA-certified laboratory were analyzed.

RESULTS: A total of 211 patients (50%) had ≥1 somatic alteration detected. Detection was highest in meningioma (59%) and gliobastoma (55%). Single nucleotide variants were detected in 61 genes, with amplifications detected in ERBB2, MET, EGFR and others.

CONCLUSION: Contrary to previous studies with very low yields, we found half of PBT patients had detectable ctDNA with genomically targetable off-label or clinical trial options for almost 50%. For those PBT patients with detectable ctDNA, plasma cfDNA genomic analysis is a clinically viable option for identifying genomically driven therapy options.

Clinical Institute

Cancer

Clinical Institute

Neurosciences (Brain & Spine)

Department

Neurosciences

Department

Oncology

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