Aim: To identify genetic polymorphisms in the promoter region of the human base excision repair gene NEIL1 in gastric cancer patients.
Methods: The NEIL1 promoter region in DNA from 80 Japanese patients with gastric cancer was searched for genetic polymorphisms by polymerase chain reaction-single-strand conformation polymorphism and subsequent sequencing analyses.
Results: Three novel genetic polymorphisms, i.e. c.-3769C>T, c.-3170T>G, and c.-2681TA, were identified in the NEIL1 promoter region at an allele frequency of 0.6%, 9.4%, and 4.4%, respectively, in Japanese gastric cancer patients.
Conclusion: Three NEIL1 promoter polymorphisms detected in this study may be of importance in gastric carcinogenesis.
Keywords: Base excision repair; Gastric cancer; Genetic polymorphism; NEIL1.