| Gene | Primer Sequence |
| TWIST | Methylation forward; 5'-TTTCGGATGGGGTTGTTATCG-3' |
| Methylation reverse; 5'-GACGAACGCGAAACGATTTC-3' | |
| Unmethylation forward; 5'-TTGGATGGGGTTGTTATTGT-3' | |
| Unmethylation reverse; 5'-ACCTTCCTCCAACAAACACA-3' |