Early volumetric, perfusion, and diffusion MRI changes after mutant isocitrate dehydrogenase (IDH) inhibitor treatment in IDH1-mutant gliomas.

Autor:	Cho NS; Medical Scientist Training Program, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA., Hagiwara A; UCLA Brain Tumor Imaging Laboratory (BTIL), Center for Computer Vision and Imaging Biomarkers, University of California, Los Angeles, Los Angeles, CA, USA., Eldred BSC; UCLA Neuro-Oncology Program, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA., Raymond C; UCLA Brain Tumor Imaging Laboratory (BTIL), Center for Computer Vision and Imaging Biomarkers, University of California, Los Angeles, Los Angeles, CA, USA., Wang C; UCLA Brain Tumor Imaging Laboratory (BTIL), Center for Computer Vision and Imaging Biomarkers, University of California, Los Angeles, Los Angeles, CA, USA., Sanvito F; UCLA Brain Tumor Imaging Laboratory (BTIL), Center for Computer Vision and Imaging Biomarkers, University of California, Los Angeles, Los Angeles, CA, USA., Lai A; UCLA Neuro-Oncology Program, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA., Nghiemphu P; UCLA Neuro-Oncology Program, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA., Salamon N; Department of Radiological Sciences, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA., Steelman L; Servier Pharmaceuticals, LLC, Boston, MA, USA., Hassan I; Servier Pharmaceuticals, LLC, Boston, MA, USA., Cloughesy TF; UCLA Neuro-Oncology Program, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA., Ellingson BM; UCLA Brain Tumor Imaging Laboratory (BTIL), Center for Computer Vision and Imaging Biomarkers, University of California, Los Angeles, Los Angeles, CA, USA.
Jazyk:	angličtina
Zdroj:	Neuro-oncology advances [Neurooncol Adv] 2022 Aug 04; Vol. 4 (1), pp. vdac124. Date of Electronic Publication: 2022 Aug 04 (Print Publication: 2022).
DOI:	10.1093/noajnl/vdac124
Abstrakt:	Background: Inhibition of the isocitrate dehydrogenase (IDH)-mutant enzyme is a novel therapeutic target in IDH-mutant gliomas. Imaging biomarkers of IDH inhibitor treatment efficacy in human IDH-mutant gliomas are largely unknown. This study investigated early volumetric, perfusion, and diffusion MRI changes in IDH1-mutant gliomas during IDH inhibitor treatment. Methods: Twenty-nine IDH1-mutant glioma patients who received IDH inhibitor and obtained anatomical, perfusion, and diffusion MRI pretreatment at 3-6 weeks ( n  = 23) and/or 2-4 months ( n  = 14) of treatment were retrospectively studied. Normalized relative cerebral blood volume (nrCBV), apparent diffusion coefficient (ADC), and fluid-attenuated inversion recovery (FLAIR) hyperintensity volume were analyzed. Results: After 3-6 weeks of treatment, nrCBV was significantly increased ( P  = .004; mean %change = 24.15%) but not FLAIR volume ( P  = .23; mean %change = 11.05%) or ADC ( P  = .52; mean %change = -1.77%). Associations between shorter progression-free survival (PFS) with posttreatment nrCBV > 1.55 ( P  = .05; median PFS, 240 vs 55 days) and increased FLAIR volume > 4 cm 3 ( P  = .06; 227 vs 29 days) trended toward significance. After 2-4 months, nrCBV, FLAIR volume, and ADC were not significantly different from baseline, but an nrCBV increase > 0% ( P  = .002; 1121 vs 257 days), posttreatment nrCBV > 1.8 ( P  = .01; 1121 vs. 270 days), posttreatment ADC < 1.15 μm 2 /ms ( P  = .02; 421 vs 215 days), median nrCBV/ADC ratio increase > 0% ( P  = .02; 1121 vs 270 days), and FLAIR volume change > 4 cm 3 ( P  = .03; 421 vs 226.5 days) were associated with shorter PFS. Conclusions: Increased nrCBV at 3-6 weeks of treatment may reflect transient therapeutic and/or tumor growth changes, whereas nrCBV, ADC, and FLAIR volume changes occurring at 2-4 months of treatment may more accurately reflect antitumor response to IDH inhibition. (© The Author(s) 2022. Published by Oxford University Press, the Society for Neuro-Oncology and the European Association of Neuro-Oncology.)
Databáze:	MEDLINE
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