%0 Journal Article %A Placke, Jan-Malte %A Kimmig, Mona %A Griewank, Klaus %A Herbst, Rudolf %A Terheyden, Patrick %A Utikal, Jochen %A Pföhler, Claudia %A Ulrich, Jens %A Kreuter, Alexander %A Mohr, Peter %A Gutzmer, Ralf %A Meier, Friedegund %A Dippel, Edgar %A Welzel, Julia %A Engel, Daniel Robert %A Kreft, Sophia %A Sucker, Antje %A Lodde, Georg %A Krefting, Frederik %A Stoffels, Ingo %A Klode, Joachim %A Roesch, Alexander %A Zimmer, Lisa %A Livingstone, Elisabeth %A Hadaschik, Eva %A Becker, Jürgen %A Weichenthal, Michael %A Tasdogan, Alpaslan %A Schadendorf, Dirk %A Ugurel, Selma %T Correlation of tumor PD-L1 expression in different tissue types and outcome of PD-1-based immunotherapy in metastatic melanoma - analysis of the DeCOG prospective multicenter cohort study ADOREG/TRIM. %J EBioMedicine %V 96 %@ 2352-3964 %C Amsterdam [u.a.] %I Elsevier %M DKFZ-2023-01806 %P 104774 %D 2023 %X PD-1-based immune checkpoint inhibition (ICI) is the major backbone of current melanoma therapy. Tumor PD-L1 expression represents one of few biomarkers predicting ICI therapy outcome. The objective of the present study was to systematically investigate whether the type of tumor tissue examined for PD-L1 expression has an impact on the correlation with ICI therapy outcome.Pre-treatment tumor tissue was collected within the prospective DeCOG cohort study ADOREG/TRIM (CA209-578; NCT05750511) between February 2014 and May 2020 from 448 consecutive patients who received PD-1-based ICI for non-resectable metastatic melanoma. The primary study endpoint was best overall response (BOR), secondary endpoints were progression-free (PFS) and overall survival (OS). All endpoints were correlated with tumor PD-L1 expression (quantified with clone 28-8; cutoff ≥5 %K Biomarker (Other) %K Immune checkpoint inhibition (Other) %K Melanoma (Other) %K Therapy outcome (Other) %K Tumor PD-L1 (Other) %F PUB:(DE-HGF)16 %9 Journal Article %$ pmid:37660535 %R 10.1016/j.ebiom.2023.104774 %U https://inrepo02.dkfz.de/record/282517