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Abstract Details

A Brain Imaging Biomarker Study in Ketone Supplementation
Neuro-oncology
P4 - Poster Session 4 (5:00 PM-6:00 PM)
6-003
To non-invasively detect and quantify ketones in the brain after exogenous ketone monoester supplementation (KME) using high-field proton magnetic resonance spectroscopy (1H-MRS).

Ketosis achieved through a ketogenic diet has been shown to have neuroprotective, anti-inflammatory, antiepileptic, and anti-neoplastic properties. The ketogenic diet requires a limited intake of carbohydrate rich foods and/or intermittent fasting periods; it is difficult for most patients to maintain prolonged ketosis. KME supplementation may overcome some difficulties with adherence and may support the health benefits of ketosis.

Four healthy and 2 IDH-mutant glioma participants (1 astrocytoma; 1 oligodendroglioma) were enrolled. We acquired data on a 7T Philips MRI before and after ingestion of 1 dose deltaG Tactical (KME). Single-voxel sLASER data were acquired from the posterior cingulate cortex in heathy, and the T2-FLAIR-hyperintense regions in patients. Data acquisition was performed before ingestion (1 measurement), immediately after ingestion (6 consecutive measurements), and after an idle period (6 consecutive measurements). Data were quantified using Osprey and LCModel linear-combination modeling software. Levels of bHB were normalized to the internal concentration reference total creatine (bHB/tCr). Blood ketone measurements were taken before KME ingestion and following the second and third MRS session.

 The median age of all participants was 32 (range: 30-43-years-old). The median BMI was 25.5 (range: 24-29). BHB peaks were identified in all patients following KME ingestion with similar durations of activity across all participants. The peak bHB/tCr among glioma patients were 0.35 and 0.17; time to peak was 55 and 59 minutes respectively. For healthy participants peak bHB/tCr were 0.12, 0.17, 0.19, 0.22 at 55, 36, 41, and 55 minutes respectively.

Exogeneous KME supplementation raises the level of bHB above the threshold of detectability on MRS in normal-appearing brain as well as IDH-mutant glioma with peak reached approximately 1 hour after ingestion.

Authors/Disclosures
Melanie Schweitzer, DO (Stony Brook University Hospital)
PRESENTER
No disclosure on file
Danielle A. Bazer, DO (Cooper University) Dr. Bazer has received research support from Keep Punching.
Seyma Alcicek, MD, PhD Dr. Alcicek has nothing to disclose.
Lindsay K. Blair, MSN (Johns Hopkins UniversityDep of Neurology) Ms. Blair has nothing to disclose.
Ipek Ozdemir, PhD The institution of Dr. Ozdemir has received research support from NIH.
Zahra Shams, PhD Ms. Shams has nothing to disclose.
Jannie Wijnen, PhD Prof. Wijnen has nothing to disclose.
Karisa C. Schreck, MD, PhD Dr. Schreck has received personal compensation in the range of $0-$499 for serving as a Consultant for Nurix. Dr. Schreck has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Novartis. Dr. Schreck has received personal compensation in the range of $0-$499 for serving on a Scientific Advisory or Data Safety Monitoring board for Advarra LLC. The institution of Dr. Schreck has received research support from Springworks Therapeutics. Dr. Schreck has received personal compensation in the range of $500-$4,999 for serving as a speaker with Springworks Therapeutics.
Vivek S. Yedavalli, MD (Johns Hopkins University) Dr. Yedavalli has received personal compensation in the range of $500-$4,999 for serving as a Consultant for RAPID LLC, IschemaView, Menlo Park, CA.
Georg Oeltzschner, PhD Dr. Oeltzschner has received personal compensation in the range of $0-$499 for serving as a Consultant for Neurona Therapeutics.
David O. Kamson, MD (Johns Hopkins University) The institution of Dr. Kamson has received research support from Maryland Cigarette Restitution Fund. The institution of Dr. Kamson has received research support from AACR. The institution of Dr. Kamson has received research support from Metavivor. The institution of Dr. Kamson has received research support from NIH.