AUTHOR=Zhang Huan , Huang Jing , Xu Huanji , Yin Nanhao , Zhou Liyan , Xue Jianxin , Ren Min TITLE=Neoadjuvant immunotherapy for DNA mismatch repair proficient/microsatellite stable non-metastatic rectal cancer: a systematic review and meta-analysis JOURNAL=Frontiers in Immunology VOLUME=16 YEAR=2025 URL=https://www.frontiersin.org/journals/immunology/articles/10.3389/fimmu.2025.1523455 DOI=10.3389/fimmu.2025.1523455 ISSN=1664-3224