DNMT1 and cancer: Through the interactions with transcription factors, non‐coding RNAs, oncogenes and tumour suppressors, DNMT1 influenced cell survival, cell cycle arrest, senescence and cell death via methylation‐dependent and methylation‐independent pathways, which resulted in aberrant activation of the multiple downstream signals and controlled expression of genes, leading to cancer growth, progression and metastasis 15, 16, 17.