Molecular mechanisms of KMT2C alterations in gastrointestinal cancers: enhancer network destabilization, lineage plasticity, and clinical translation. (PubMed, Front Immunol)
In this review, we integrate evidence from hepatocellular carcinoma, pancreatic ductal adenocarcinoma, cholangiocarcinoma, colorectal cancer, gastric cancer, esophageal cancer, and gallbladder cancer within a unified framework that links KMT2C domain architecture to enhancer-network destabilization, phenotypic state transitions, and clinical manifestations. We further propose a functional evaluation paradigm that reframes discrete KMT2C variants as graded states of epigenetic deficiency, coupled with a closed-loop validation strategy integrating tissue-based profiling, liquid biopsy monitoring, and spatial multi-omics analyses.