Back to Search Start Over

Phase 2 study of AV-GBM-1 (a tumor-initiating cell targeted dendritic cell vaccine) in newly diagnosed Glioblastoma patients: safety and efficacy assessment.

Authors :
Bota, Daniela A.
Taylor, Thomas H.
Piccioni, David E.
Duma, Christopher M.
LaRocca, Renato V.
Kesari, Santosh
Carrillo, Jose A.
Abedi, Mehrdad
Aiken, Robert D.
Hsu, Frank P. K.
Kong, Xiao-Tang
Hsieh, Candace
Bota, Peter G.
Nistor, Gabriel I.
Keirstead, Hans S.
Dillman, Robert O.
Source :
Journal of Experimental & Clinical Cancer Research (17569966); 12/14/2022, Vol. 41 Issue 1, p1-9, 9p
Publication Year :
2022

Abstract

Background: Vaccine immunotherapy may improve survival in Glioblastoma (GBM). A multicenter phase II trial was designed to determine: (1) the success rate of manufacturing the Aivita GBM vaccine (AV-GBM-1), (2) Adverse Events (AE) associated with AV-GBM-1 administration, and (3) survival. Methods: Fresh suspected glioblastoma tissue was collected during surgery, and patients with pathology-confirmed GBM enrolled before starting concurrent Radiation Therapy and Temozolomide (RT/TMZ) with Intent to Treat (ITT) after recovery from RT/TMZ. AV-GBM-1 was made by incubating autologous dendritic cells with a lysate of irradiated autologous Tumor-Initiating Cells (TICs). Eligible patients were adults (18 to 70 years old) with a Karnofsky Performance Score (KPS) of 70 or greater, a successful TIC culture, and sufficient monocytes collected. A cryopreserved AV-GBM-1 dose was thawed and admixed with 500 μg of Granulocyte-Macrophage Colony-Stimulating Factor (GM-CSF) before every subcutaneous (s.c.) administration. Results: Success rates were 97% for both TIC production and monocyte collection. AV-GBM-1 was manufactured for 63/63 patients; 60 enrolled per ITT; 57 started AV-GBM-1. The most common AEs attributed to AV-GBM-1 were local injection site reactions (16%) and flu-like symptoms (10%). Treatment-emergent AEs included seizures (33%), headache (37%), and focal neurologic symptoms (28%). One patient discontinued AV-GBM-1 because of seizures. Median Progression-Free Survival (mPFS) and median Overall Survival (mOS) from ITT enrollment were 10.4 and 16.0 months, respectively. 2-year Overall Survival (OS) is 27%. Conclusions: AV-GBM-1 was reliably manufactured. Treatment was well-tolerated, but there were numerous treatment-emergent central nervous system AEs. mPFS was longer than historical benchmarks, though no mOS improvement was noted. Trial registration: NCT, NCT03400917, Registered 10 January 2018, [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
17569966
Volume :
41
Issue :
1
Database :
Complementary Index
Journal :
Journal of Experimental & Clinical Cancer Research (17569966)
Publication Type :
Academic Journal
Accession number :
160779600
Full Text :
https://doi.org/10.1186/s13046-022-02552-6