PD-L1 targeting and subclonal immune escape mediated by PD-L1 mutations in metastatic colorectal cancer oleh Thomas J Ettrich, Barbara Seliger, Chiara Massa, Alexander Stein, Claudia Wickenhauser, Axel Hinke, Uwe Pelzer, Carsten Bokemeyer, Marcus Bauer, Susanna Hegewisch-Becker, Donjete Simnica, Christoph Schultheiß, Rebekka Scholz, Joseph Tintelnot, Eray Gökkurt, Lisa von Wenserski, Edith Willscher, Lisa Paschold, Markus Sauer, Sylvie Lorenzen, Jorge Riera-Knorrenschild, Reinhard Depenbusch, Steffen Dörfel, Salah-Eddin Al-Batran, Meinolf Karthaus, Lisa Waberer, Mascha Binder