The kynurenine to tryptophan ratio as a prognostic tool for glioblastoma patients enrolling in immunotherapy

Lijie Zhai, Mahua Dey, Kristen L. Lauing, Galina Gritsina, Rajwant Kaur, Rimas V. Lukas, M. Kelly Nicholas, Alfred W. Rademaker, Carlos R. Dostal, Robert H. McCusker, Jeffrey J. Raizer, Andrew T. Parsa, Orin Bloch, Derek A. Wainwright