In present study, we found that the frequencies of the GG, GC, and CC genotypes of NEIL2 rs804270 were 30.7%, 48.8% and 20.5% in the normal healthy controls, 28.3%, 44.5% and 27.3% in CIN III and 23.3%, 42.3% and 34.5% in CSCC, respectively. This evidence concerns the gene NEIL2 and uterine cervix carcinoma in situ.