https://scholars.lib.ntu.edu.tw/handle/123456789/627456
標題: | The Ring Study: an international comparison of PD-L1 diagnostic assays and their interpretation in non-small cell lung cancer, head and neck squamous cell cancer and urothelial cancer | 作者: | SUNG-LIANG YU Hsiao, Yi-Jing Cooper, Wendy A Choi, Yoon-La Avilés-Salas, Alejandro Chou, Teh-Ying Coudry, Renata Raskin, Grigory A Fox, Stephen B Huang, Chao-Cheng Jeon, Yoon Kyung Ko, Young-Hyeh Ku, Wen-Hui Kwon, Ghee-Young Leslie, Connull MEI-CHUN LIN PEI-JEN LOU Scapulatempo-Neto, Cristovam Mendoza Ramírez, Saulo Savelov, Nikita Shim, Hyo-Sup Lara Torres, Cesar Octavio Cunha, Isabela Werneck Zavalishina, Larisa YAN-MING CHEN |
關鍵字: | 22C3; SP263; interchangeability; reliability; reproducibility | 公開日期: | 二月-2023 | 卷: | 55 | 期: | 1 | 來源出版物: | Pathology | 摘要: | PD-L1 immunohistochemistry has been approved as a diagnostic assay for immunotherapy. However, an international comparison across multiple cancers is lacking. This study aimed to assess the performance of PD-L1 diagnostic assays in non-small cell lung cancer (NSCLC), head and neck squamous cell cancer (HNSCC) and urothelial cancer (UC). The excisional specimens of NSCLC, HNSCC and UC were assayed by Ventana SP263 and scored at three sites in each country, including Australia, Brazil, Korea, Mexico, Russia and Taiwan. All slides were rotated to two other sites for interobserver scoring. The same cohort of NSCLC was assessed with Dako 22C3 pharmDx PD-L1 for comparison. The PD-L1 immunopositivity was scored according to the approved PD-L1 scoring algorithms which were the percentage of PD-L1-expressing tumour cell (TC) and tumour proportion score (TPS) by Ventana SP263 and Dako 22C3 staining, respectively. In NSCLC, the comparison demonstrated the comparability of the SP263 and 22C3 assays (cut-off of 1%, κ=0.71; 25%, κ=0.75; 50%, κ=0.81). The interobserver comparisons showed moderate to almost perfect agreement for SP263 in TC staining at 25% cut-off (NSCLC, κ=0.72 to 0.86; HNSCC, κ=0.60 to 0.82; UC, κ=0.68 to 0.91) and at 50% cut-off for NSCLC (κ=0.64 to 0.90). Regarding the immune cell (IC) scoring in UC, there was a lower correlation (concordance correlation coefficient=0.10 to 0.68) and poor to substantial agreements at the 1%, 5%, 10% and 25% cut-offs (κ= -0.04 to 0.76). The interchangeability of SP263 and 22C3 in NSCLC might be acceptable, especially at the 50% cut-off. In HNSCC, the performance of SP263 is comparable across five countries. In UC, there was low concordance of IC staining, which may affect treatment decisions. Overall, the study showed the reliability and reproducibility of SP263 in NSCLC, HNSCC and UC. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/627456 | ISSN: | 00313025 | DOI: | 10.1016/j.pathol.2022.07.016 |
顯示於: | 醫學檢驗暨生物技術學系 |
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