Graded Prognostic Assessment (GPA) for Patients With Lung Cancer and Brain Metastases: Initial Report of the Small Cell Lung Cancer GPA and Update of the Non-Small Cell Lung Cancer GPA Including the Effect of Programmed Death Ligand 1 and Other Prognostic Factors

Paul W. Sperduto, Brian De, Jing Li, David Carpenter, John P. Kirkpatrick, Michael Milligan, Helen A. Shih, Tuğçe Kütük, Rupesh Kotecha, Hajime Higaki, Manami Otsuka, Hidefumi Aoyama, Malie Bourgoin, David Roberge, Salah Dajani, Sean Sachdev, Jordan Gainey, John M. Buatti, William G. Breen, Paul D. Brown, Lisa Ni, Steve Braunstein, Matthew Gallitto, Tony J. C. Wang, Ryan Shanley, Emil Lou, Jay Shiao, Laurie E. Gaspar, Satoshi Tanabe, Toshimichi Nakano, Yi An, Veronica Chiang, Liang Zeng, Hany Soliman, Hesham Elhalawani, Daniel Cagney, Evan Thomas, Drexell H. Boggs, Manmeet S. Ahluwalia, Minesh P. Mehta