DNA methylation signatures of sporadic colorectal cancer with microsatellite instability
ABSTRACT Colorectal cancer (CRC) is a heterogeneous disease shaped by genetic and epigenetic alterations. Approximately 20% of CRCs exhibit widespread CpG island hypermethylation, termed the CpG Island Methylator Phenotype (CIMP), frequently accompanied by MLH1 promoter hypermethylation, deficient mismatch repair (dMMR...