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Baretton G, Lordick F, Gaiser T, Hofheinz R, Horst D, Lorenzen S, Möhler M, Röcken C, Schirmacher P, Stahl M, Thuss-Patience P, Tiemann K. [Standardized and quality-assured predictive PD-L1 testing in the upper gastrointestinal tract. German version]. PATHOLOGIE (HEIDELBERG, GERMANY) 2024; 45:51-58. [PMID: 38170268 PMCID: PMC10827825 DOI: 10.1007/s00292-023-01215-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 11/09/2023] [Indexed: 01/05/2024]
Abstract
As a result of the high approval dynamics and the growing number of immuno-oncological therapy concepts, the complexity of therapy decisions and control in the area of carcinomas of the esophagus, gastroesophageal junction and stomach is constantly increasing. Since the treatment indication for PD‑1 inhibitors that are currently approved in the European Union is often linked to the expression of PD-L1 (programmed cell death-ligand 1), the evaluation of tissue-based predictive markers by the pathologist is of crucial importance for treatment stratification. Even though the immunohistochemical analysis of the PD-L1 expression status is one of the best studied, therapy-relevant biomarkers for an immuno-oncological treatment, due to the high heterogeneity of carcinomas of the upper gastrointestinal tract, there are challenges in daily clinical diagnostic work with regard to implementation, standardization and interpretation of testing. An interdisciplinary group of experts from Germany has taken a position on relevant questions from daily pathological and clinical practice, which concern the starting material, quality-assured testing and the interpretation of pathological findings, and has developed recommendations for structured reporting.
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Affiliation(s)
- G Baretton
- Institut für Pathologie, Universitätsklinikum Carl Gustav Carus, TU Dresden, Fetscherstr. 74, 01307, Dresden, Deutschland.
| | - F Lordick
- Medizinische Klinik II (Onkologie, Gastroenterologie, Hepatologie und Pneumologie) und Universitäres Krebszentrum Leipzig, Universitätsmedizin Leipzig, Leipzig, Deutschland.
| | - T Gaiser
- PATHOLOGIE SPEYER Gemeinschaftspraxis GbR, Speyer, Deutschland
| | - R Hofheinz
- Universitätsmedizin Mannheim, Mannheim, Deutschland
| | - D Horst
- Institut für Pathologie, Charité - Universitätsmedizin Berlin, Berlin, Deutschland
| | - S Lorenzen
- III. Medizinische Klinik, Klinikum rechts der Isar, München, Deutschland
| | - M Möhler
- I. Medizinische Klinik und Poliklinik, Universitätsmedizin Mainz, Mainz, Deutschland
| | - C Röcken
- Institut für Pathologie, Christian-Albrechts-Universität, Kiel, Deutschland
| | - P Schirmacher
- Pathologisches Institut, Universitätsklinikum Heidelberg, Heidelberg, Deutschland
| | - M Stahl
- Klinik für Internistische Onkologie & Onkologische Palliativmedizin, KEM | Evang. Kliniken Essen-Mitte, Evang. Huyssens-Stiftung Essen-Huttrop, Essen, Deutschland
| | - P Thuss-Patience
- Charité Centrum Tumormedizin CC14, Campus Virchow-Klinikum, Charité - Universitätsmedizin Berlin, Berlin, Deutschland
| | - K Tiemann
- Institut für Hämatopathologie, Hamburg, Deutschland
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Baretton GB, Lordick F, Gaiser T, Hofheinz R, Horst D, Lorenzen S, Moehler M, Röcken C, Schirmacher P, Stahl M, Thuss-Patience P, Tiemann K. Standardized and quality-assured predictive PD-L1 testing in the upper gastrointestinal tract. J Cancer Res Clin Oncol 2023; 149:16231-16238. [PMID: 37874352 PMCID: PMC10620316 DOI: 10.1007/s00432-023-05180-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Accepted: 07/11/2023] [Indexed: 10/25/2023]
Abstract
As a result of the high approval dynamics and the growing number of immuno-oncological concepts, the complexity of treatment decisions and control in the area of cancers of the esophagus, gastroesophageal junction and stomach is constantly increasing. Since the treatment indication for PD-1 inhibitors that are currently approved in the European Union is often linked to the expression of PD-L1 (programmed cell death-ligand 1), the evaluation of tissue-based predictive markers by the pathologist is of crucial importance for treatment stratification. Even though the immunohistochemical analysis of the PD-L1 expression status is one of the best studied, therapy-relevant biomarkers for an immuno-oncological treatment, due to the high heterogeneity of carcinomas of the upper gastrointestinal tract, there are challenges in daily clinical diagnostic work with regard to implementation, standardization and interpretation of testing. An interdisciplinary group of experts from Germany has taken a position on relevant questions from daily pathological and clinical practice, which concern the starting material, quality-assured testing and the interpretation of pathological findings, and has developed recommendations for structured reporting.
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Affiliation(s)
- Gustavo B Baretton
- Institute for Pathology, University Hospital Carl Gustav Carus, TU Dresden, Fetscherstrasse 74, 01307, Dresden, Germany
| | - Florian Lordick
- Department of Medicine II (Oncology, Gastroenterology, Hepatology and Pulmonology) and University Cancer Center Leipzig, University of Leipzig Medical Center, Leipzig, Germany.
| | - T Gaiser
- Institute of Applied Pathology, 67346, Speyer, Germany
| | - R Hofheinz
- University Medicine Mannheim, Mannheim, Germany
| | - D Horst
- Institute of Pathology of the Charité-University Medicine Berlin, Berlin, Germany
| | - S Lorenzen
- Department of Medicine III, Klinikum Rechts der Isar, Munich, Germany
| | - M Moehler
- Department of Medicine I, University Medicine Mainz, Mainz, Germany
| | - C Röcken
- Institute of Pathology, Christian-Albrechts University, Kiel, Germany
| | - P Schirmacher
- Institute of Pathology, University Hospital Heidelberg, Heidelberg, Germany
| | - M Stahl
- Department of Oncology and Palliative Care, Kliniken Essen Mitte, Evangelische Huyssens-Stiftung, Essen-Huttrop, Essen, Germany
| | - P Thuss-Patience
- Charité Center of Tumor Medicine CC14, Charité Campus Virchow-University Medicine Berlin, Berlin, Germany
| | - K Tiemann
- Institute of Hematopathology, Hamburg, Germany
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