Wednesday, September 17, 2025 9/17/2025

Clinical evaluation and non-invasive monitoring of Vorasidenib in combination with tumor specific peptide PEP-IDH1M vaccine therapy in patients with recurrent mutant IDH1 glioma

Award Number: R01CA271129
ORGANIZATION: NATIONAL CANCER INSTITUTE
OPDIV: NIH
AWARD CLASS: DISCRETIONARY
AWARD ACTIVITY TYPE: SCIENTIFIC/HEALTH RESEARCH (INCLUDES SURVEYS)
PERIOD OF PERFORMANCE START DATE: 09/21/2022
PERIOD OF PERFORMANCE END DATE: 08/31/2026

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Clinical evaluation and non-invasive monitoring of Vorasidenib in combination with tumor specific peptide PEP-IDH1M vaccine therapy in patients with recurrent mutant IDH1 glioma - Abstract – The identification of mutations in the isocitrate dehydrogenase 1 (mIDH1) gene has led to significant advances in understanding lower grade gliomas. Lower grade gliomas, WHO grade II-III, can have a longer median overall survival than WHO grade IV, yet they still develop significant neurological morbidity and ultimately mortality, as standard of care therapies are not curative. New therapeutics are needed to target lower grade gliomas to improve quality of life outcomes and survival for these patients. The mIDH1 mutation exists in over 70% of glioma subtypes and is the oncogenic driver in lower grade gliomas by leading to the extreme overproduction of the oncometabolite R-2-hydroxyglutarate (2HG). Because the mutation is specific to the tumor, it provides significant targets for the development of: 1) targeted therapeutics, such as mIDH1/2 inhibitors and immunotherapeutic vaccines (e.g., vorasidenib and PEPIDH1M, respectively) and 2) non-invasive tumor diagnosis and monitoring methods, via magnetic resonance spectroscopy (MRS). More recently, it has been reported that in addition to driving the oncogenesis of lower grade gliomas, 2HG has immunosuppressive actions. Its role as a driver of gliomagenesis and now induction of immunosuppression of tumor-fighting T-cells places 2HG as a critical target in fighting lower grade gliomas. Thus, we propose a clinical trial for a combined therapy of vorasidenib and PEPIDH1M. We hypothesize that early suppression of 2HG by vorasidenib would allow subsequent or concurrent administration of PEPIDH1M vaccine to generate a more robust T-cell response and lead to increased immune-mediated tumor cell kill (Specific Aim 1). In this phase I, single-site clinical trial, we will determine the safety of this combinatorial approach. Toxicity events will be evaluated and graded by CTCAE 5.0 criteria. The RANO criteria will be used to assess radiographic progression-free survival based on routine MRI imaging. As an exploratory goal, we will map 2HG across the brain longitudinally using existing high-speed magnetic resonance spectroscopic imaging (MRSI) and offline processing to monitor the effects of vorasidenib (Specific Aim 2). Finally, in parallel with the clinical trial, we will convert the validated 2HG mapping tool into a standardized works-in-progress (WIP) package for reporting 2HG levels on both GE and Siemens scanner DICOM workflow (Specific Aim 3). This project builds on 1) our previous experiences participating in the early clinical trials for PEPIDHM1 and vorasidenib, where we also characterized longitudinal 2HG levels, and 2) our decades-long experience with automating MRS methods and translating them into manufacturer supported WIP packages.


Issue Date FY	Funding FY	Legal Entity Name	Legal Entity Address	Legal Entity City	Legal Entity State	Legal Entity Zip Code	Legal Entity COUNTY	Legal Entity COUNTRY	Assistance Listing	Award Code	Budget Year	Action Date	Action Type	Action Amount

Issue Date FY: 2025 ( Subtotal = $438,208 )
2025	2025	DUKE UNIVERSITY	2200 W MAIN ST	DURHAM	NC	27705	DURHAM	USA	Cancer Treatment Research	000	4	8/20/2025	NON-COMPETING CONTINUATION	$438,208
														Subtotal = $438,208

Issue Date FY: 2024 ( Subtotal = $291,737 )
2024	2024	DUKE UNIVERSITY	2200 W MAIN ST	DURHAM	NC	27705	DURHAM	USA	Cancer Treatment Research	000	3	8/27/2024	NON-COMPETING CONTINUATION	$291,737
														Subtotal = $291,737

Issue Date FY: 2023 ( Subtotal = $462,296 )
2023	2023	DUKE UNIVERSITY	2200 W MAIN ST	DURHAM	NC	27705	DURHAM	USA	Cancer Treatment Research	001	2	8/24/2023	NON-COMPETING CONTINUATION	$462,296
2023	2022	DUKE UNIVERSITY	2200 W MAIN ST STE 710	DURHAM	NC	27708	DURHAM	USA	Cancer Treatment Research	000	1	11/22/2022	NEW	$0
														Subtotal = $462,296

Issue Date FY: 2022 ( Subtotal = $392,725 )
2022	2022	DUKE UNIVERSITY	2200 W MAIN ST STE 710	DURHAM	NC	27708	DURHAM	USA	Cancer Treatment Research	000	1	9/21/2022	NEW	$392,725
														Subtotal = $392,725

Grand Total All Awards = $1,584,966

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Clinical evaluation and non-invasive monitoring of Vorasidenib in combination with tumor specific peptide PEP-IDH1M vaccine therapy in patients with recurrent mutant IDH1 glioma

Award Number: R01CA271129

ORGANIZATION: NATIONAL CANCER INSTITUTE

OPDIV: NIH

AWARD CLASS: DISCRETIONARY

AWARD ACTIVITY TYPE: SCIENTIFIC/HEALTH RESEARCH (INCLUDES SURVEYS)

PERIOD OF PERFORMANCE START DATE: 09/21/2022

PERIOD OF PERFORMANCE END DATE: 08/31/2026

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