YTHDC2 and non-small cell lung carcinoma: The shallow deletions of YTHDC2 are the most frequent copy number loss of these ten m6A regulators, while the gain of YTHDF3 DNA copy number is the most common change in the CNVs of ten m6A regulatory genes (Table 1, Figure 2), suggesting a key significance of m6A reader genes in RNA m6A methylation in NSCLC patients.