A DR5/Ligase 3-mediated feedback loop perpetuates immunogenicity in mismatch repair deficient colorectal cancer

The authors investigate the mechanisms behind the immunogenicity of mismatch repair deficient (dMMR) colorectal cancer (CRC) and its implications for immune checkpoint inhibitor (ICI) therapy. They identify a feedback loop involving DR5 and Ligase 3 that enhances antitumor immune responses and apoptosis in dMMR tumors, suggesting that this mechanism could explain variability in ICI responses among patients. Their findings highlight the potential for targeting this feedback loop to improve ICI therapy across different MMR statuses in CRC.