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Abstract #0510

Image-Guided Metabolomic Analysis of 2-Hydroxyglutarate in IDH-Mutant Gliomas

Llewellyn E. Jalbert1, Adam Elkhaled2, Joanna J. Phillips3, Susan M. Chang4, Sarah J. Nelson1, 2

1Bioengineering & Therapeutic Sciences, University of California, San Francisco, San Francisco, CA, United States; 2Radiology & Biomedical Imaging, University of California, San Francisco, San Francisco, CA, United States; 3Pathology, University of California, San Francisco, San Francisco, CA, United States; 4Neurological Surgery, University of California San Francisco, San Francisco, CA, United States

2-hydroxyglutarate (2HG) has proved to be a promising biomarker for IDH1/2 mutations that can be quantified using magnetic resonance. However, little research has been conducted on the affect on 2HG on the cellular metabolome. The goal of this study was to investigate the differences in metabolic profiles between IDH-mutant low-grade gliomas containing 2HG with wild-type IDH tumors using proton High-Resolution Magic Angle Spinning (1H HR-MAS) spectroscopy of 242 image-guided tissue samples that were acquired from 110 patients with recurrent, low-grade gliomas.

Keywords

absence accessible acid acquisition activity affect altered anatomic antibody approved atom basis bioengineering biomedical bisected blue body brain cancer cells cellular chemotherapy choline citric classified clinical cohorts common concentrations conducted containing correlations create custom dang dehydrated deuterium directional discern disruption distinct edited elevated encodes enzymatic enzymes ethanols evaluated excluded experienced family fits fixed frozen furthermore future gain gill goal grade graded guided histological immediately implicated in vivo included indicated injection insufficient involved issue known lesions liquid magic management mass metabolic metabolite metabolites minutes mitosis mutant mutations navigation neighboring neurological neurology normalized nuclear numerous often oncogenes oncology original parametric pathologically patient patients preoperative presence prior produce profile progression project prominent promising proton pulse quantum quest radiation radiology rank recovery recruited recurrence recurrent registered related resection resolution rotor sample samples scanned sciences software spectra spectral spectroscopy spectrum spore stored support surgical suspected therapeutic tissue treatment tumor tumors type ultimate upon upwards utilized volume wild zirconium