Ryan J Duchatel, Evangeline R Jackson, Sarah G Parackal, Dylan Kiltschewskij, Izac J Findlay, Abdul Mannan, Dilana E Staudt, Bryce C Thomas, Zacary P Germon, Sandra Laternser, Padraic S Kearney, M Fairuz B Jamaluddin, Alicia M Douglas, Tyrone S Beitaki, Holly P McEwen, Mika L Persson, Emily A Hocke, Vaibhav Jain, Michael Aksu, Elizabeth E Manning, Heather C Murray, Nicole M Verrills, Claire Xin Sun, Paul Daniel, Ricardo E Vilain, David A Skerrett-Byrne, Brett Nixon, Susan Hua, Charles E de Bock, Yolanda Colino-Sanguino, Fatima Valdes-Mora, Maria Tsoli, David S Ziegler, Murray J Cairns, Eric H Raabe, Nicholas A Vitanza, Esther Hulleman, Timothy N Phoenix, Carl Koschmann, Frank Alvaro, Christopher V Dayas, Christopher L Tinkle, Helen Wheeler, James R Whittle, David D Eisenstat, Ron Firestein, Sabine Mueller, Santosh Valvi, Jordan R Hansford, David M Ashley, Simon G Gregory, Lindsay B Kilburn, Javad Nazarian, Jason E Cain, Matthew D Dun
Diffuse midline glioma (DMG), including tumors diagnosed in the brainstem (diffuse intrinsic pontine glioma - DIPG), are uniformly fatal brain tumors that lack effective treatment. Analysis of CRISPR-Cas9 loss-of-function gene deletion screens identified PIK3CA and MTOR as targetable molecular dependencies across DIPG patient models, highlighting the therapeutic potential of the blood-brain barrier penetrant PI3K/Akt/mTOR inhibitor, paxalisib. At the human equivalent maximum tolerated dose, mice treated with paxalisib experienced systemic glucose feedback and increased insulin levels commensurate with patients using PI3K inhibitors...
February 6, 2024: Journal of Clinical Investigation