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Clinical Brain Tumor Development of a Cytomegalovirus-targeted Therapeutic with Vaccine pre-conditioning to Validate Novel Predictors of Vaccine Efficacy

Award Number: R01CA235612
ORGANIZATION: NATIONAL CANCER INSTITUTE
OPDIV: NIH
AWARD CLASS: DISCRETIONARY
AWARD ACTIVITY TYPE: SCIENTIFIC/HEALTH RESEARCH (INCLUDES SURVEYS)
PERIOD OF PERFORMANCE START DATE: 12/01/2018
PERIOD OF PERFORMANCE END DATE: 07/31/2023

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Clinical Brain Tumor Development of a Cytomegalovirus-targeted Therapeutic with Vaccine pre-conditioning to Validate Novel Predictors of Vaccine Efficacy - ABSTRACT We have previously reported in Nature that patients with newly-diagnosed glioblastoma (GBM) randomized to receiving vaccines against Cytomegalovirus (CMV) using a potent vaccine site preconditioning regimen had a statistically significant increase in progression-free survival (PFS) and overall survival (OS). Half of the patients treated this way were still alive nearly 5 years later despite having no genetic markers predicting long-term survival. These results have been repeated in an additional cohort which showed a median survival of 44.1 months with ~36% of patients alive at 5 years. These results are remarkable because GBM remains uniformly lethal with a median OS of < 21 months despite surgical resection, high dose radiation therapy, chemotherapy, and tumor-treating fields, and only 10% of patients typically live past 5 years. In addition to demonstrating the potential for efficacy, our preliminary clinical and laboratory studies demonstrated that preconditioning the vaccination site with tetanus/diphtheria (Td) recall antigens increased DC migration to the draining lymph nodes (DLNs), which predicted PFS and OS as did the production of polyfunctional, CMV-specific T cells. These T cell responses were enhanced by GM-CSF at the vaccine site and pre-vaccination lymphodepletion with standard of care (SOC) temozolomide (TMZ), but inhibited by subsequent adjuvant doses of TMZ. Moreover, mechanistic studies in mice and humans revealed that efficacy was also dependent on producing high systemic levels of the chemokine (C-C motif) ligand 3 (CCL3). We believe these results warrant confirmation in a larger series of patients. Our Specific Aims are: 1. To conduct a larger Phase 2 trial of CMV pp65-loaded DC vaccination in patients with GBM. Patients with CMV positive, newly diagnosed GBM will receive serial vaccines with CMV pp65-loaded DCs with GM-CSF and Td vaccine site preconditioning. GM-CSF and Td vaccine site preconditioning will be employed because they have been shown to enhance DC migration and increase polyfunctional T cell responses in prior studies. TMZ will be given prior to vaccination to induce homeostatic proliferation of the vaccine-induced T cell responses but not given subsequently to prevent killing of vaccine-induced T cells. 2. To confirm predictors of survival. In our prior studies DC migration to draining lymph nodes, systemic and local CCL3, and CMV pp65-specific polyfunctional T cells predicted PFS and OS. Here we will collect samples to confirm these predictors.


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: 2024 ( Subtotal = -$12,734 )
2024	2022	DUKE UNIVERSITY	2200 W MAIN ST	DURHAM	NC	27705	DURHAM	USA	Cancer Treatment Research	000	4	3/1/2024	NON-COMPETING CONTINUATION	-$12,734
														Subtotal = -$12,734

Issue Date FY: 2023 ( Subtotal = $0 )
2023	2022	DUKE UNIVERSITY	2200 W MAIN ST	DURHAM	NC	27705	DURHAM	USA	Cancer Treatment Research	000	4	2/20/2023	NON-COMPETING CONTINUATION	$0
														Subtotal = $0

Issue Date FY: 2022 ( Subtotal = $400,950 )
2022	2022	DUKE UNIVERSITY	2200 W MAIN ST STE 710	DURHAM	NC	27708	DURHAM	USA	Cancer Treatment Research	001	4	5/24/2022	NON-COMPETING CONTINUATION	$32,730
2022	2022	DUKE UNIVERSITY	2200 W MAIN ST STE 710	DURHAM	NC	27708	DURHAM	USA	Cancer Treatment Research	000	4	12/21/2021	NON-COMPETING CONTINUATION	$368,220
														Subtotal = $400,950

Issue Date FY: 2021 ( Subtotal = $565,025 )
2021	2021	DUKE UNIVERSITY	2200 W MAIN ST STE 710	DURHAM	NC	27708	DURHAM	USA	Cancer Treatment Research	001	3	1/22/2021	NON-COMPETING CONTINUATION	$28,251
2021	2021	DUKE UNIVERSITY	2200 W MAIN ST STE 710	DURHAM	NC	27708	DURHAM	USA	Cancer Treatment Research	000	3	11/30/2020	NON-COMPETING CONTINUATION	$536,774
														Subtotal = $565,025

Issue Date FY: 2020 ( Subtotal = $584,463 )
2020	2020	DUKE UNIVERSITY	2200 W MAIN ST STE 710	DURHAM	NC	27708	DURHAM	USA	Cancer Treatment Research	001	2	1/14/2020	NON-COMPETING CONTINUATION	$58,447
2020	2020	DUKE UNIVERSITY	2200 W MAIN ST STE 710	DURHAM	NC	27708	DURHAM	USA	Cancer Treatment Research	000	2	12/12/2019	NON-COMPETING CONTINUATION	$526,016
2020	2019	DUKE UNIVERSITY	2200 W MAIN ST STE 710	DURHAM	NC	27708	DURHAM	USA	Cancer Treatment Research	002	1	4/14/2020	NEW	$0
														Subtotal = $584,463

Issue Date FY: 2019 ( Subtotal = $413,970 )
2019	2019	DUKE UNIVERSITY	2200 W MAIN ST STE 710	DURHAM	NC	27708	DURHAM	USA	Cancer Treatment Research	000	1	11/30/2018	NEW	$413,970
														Subtotal = $413,970

Grand Total All Awards = $1,951,674

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Clinical Brain Tumor Development of a Cytomegalovirus-targeted Therapeutic with Vaccine pre-conditioning to Validate Novel Predictors of Vaccine Efficacy

Award Number: R01CA235612

ORGANIZATION: NATIONAL CANCER INSTITUTE

OPDIV: NIH

AWARD CLASS: DISCRETIONARY

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

PERIOD OF PERFORMANCE START DATE: 12/01/2018

PERIOD OF PERFORMANCE END DATE: 07/31/2023

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