AUTHOR=Ren Wei , Zhang Hanyu , Li Yixin , Sun Wu , Peng Hexiang , Guo Huangda , Hou Tianjiao , Wang Mengying , Hu Zhendong , Wu Tao , Liu Baorui TITLE=Efficacy and safety of PD-1/PD-L1 inhibitors as first-line treatment for esophageal squamous cell carcinoma: a systematic review and meta-analysis JOURNAL=Frontiers in Immunology VOLUME=Volume 16 - 2025 YEAR=2025 URL=https://www.frontiersin.org/journals/immunology/articles/10.3389/fimmu.2025.1563300 DOI=10.3389/fimmu.2025.1563300 ISSN=1664-3224