ecrin-mdr-crcClinical2023colorectal cancerColorectal CancerInterventionalhttps://newmdr.ecrin.org/Study/88907China6ECRIN MDRNot yet recruitingfalseClinical study on the efficacy and safety of PD-1/PD-L1 combined with brachytherapy for advanced metastatic colorectal cancerInterventions: Test group:Brachytherapy and PD-1 inhibitors Primary outcome(s): Safety and effectiveness of treatment options;PFS;OS Study Design: Single arm2023-06-1588907ChiCTR2300072804