METTL14 and neoplasm: Through research and analyses, it was found that METTL14 level was negatively linked with tumor size, metastasis stage, pathological grade, and TNM stage (Zhang et al., 2021a; Liu et al., 2022d), and METTL14 could increase lymph node metastasis, liver metastasis and mortality rate of BC mouse model (Liu et al., 2022a).