ERCC1 and central nervous system cancer: For the significant role of nucleotide excision repair (NER) in DNA repair, Chinese researchers studied the relationship between Excision Repair Cross‐complementing rodent repair deficiency 1 (ERCC1) and radio‐sensitivity of glioma.21 Two radiosensitive cells were with the methylated status of ERCC1 gene, while the promoter regions of ERCC1 gene in other 2 radio‐resistant cells were de‐methylated.