Please use this identifier to cite or link to this item:http://hdl.handle.net/20.500.12105/10986
Bevacizumab dose adjustment to improve clinical outcomes of glioblastoma.
García-Romero, N | Palacín-Aliana, I | Madurga, R | Carrión-Navarro, J | Esteban-Rubio, Susana | Jiménez, B | Collazo, A | Pérez-Rodríguez, F | Ortiz de Mendivil, A | Fernández-Carballal, C | García-Duque, S | Diamantopoulos-Fernández, J | Belda-Iniesta, Cristobal ISCIII | Prat-Acín, R | Calvo, E | Ayuso-Sacido, A | Sanchez-Gomez, Pilar ISCIII
BMC Med . 2020 Jun 22;18(1):142.
Glioblastoma (GBM) is one of the most aggressive and vascularized brain tumors in adults, with a median survival of 20.9 months. In newly diagnosed and recurrent GBM, bevacizumab demonstrated an increase in progression-free survival, but not in overall survival. We conducted an in silico analysis of VEGF expression, in a cohort of 1082 glioma patients. Then, to determine whether appropriate bevacizumab dose adjustment could increase the anti-angiogenic response, we used in vitro and in vivo GBM models. Additionally, we analyzed VEGFA expression in tissue, serum, and plasma in a cohort of GBM patients before and during bevacizumab treatment. We identified that 20% of primary GBM did not express VEGFA suggesting that these patients would probably not respond to bevacizumab therapy as we proved in vitro and in vivo. We found that a specific dose of bevacizumab calculated based on VEGFA expression levels increases the response to treatment in cell culture and serum samples from mice bearing GBM tumors. Additionally, in a cohort of GBM patients, we observed a correlation of VEGFA levels in serum, but not in plasma, with bevacizumab treatment performance. Our data suggest that bevacizumab dose adjustment could improve clinical outcomes in Glioblastoma treatment.
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