CCND1 G870A polymorphism and cervical cancer risk: a case-control study and meta-analysis
Jing Ni1, Meilin Wang, Miaomiao Wang
1Department of Gynecology and Obstetrics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China.
Purpose:
Cyclin D1 (CCND1) is a key regulatory protein in the G1/S checkpoint of the cell cycle. We hypothesized that the G870A polymorphism of CCND1 is associated with the risk for cervical cancer and performed a meta-analysis of eligible studies to evaluate this relationship.
Methods:
In a case-control study of 300 patients with newly diagnosed cervical cancer and 312 cancer-free controls who were frequency-matched by age, we genotyped the G870A polymorphism of CCND1 by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP). A meta-analysis was performed using five case-control studies, including our results.
Results:
No significant association was observed between the G870A polymorphism of CCND1 and cervical cancer risk. Further, in our meta-analysis, there was no significant risk of cervical cancer that correlated with the G870A polymorphism of CCND1. In the stratified analysis by race, however, individuals who harbored the AA or AA/AG genotypes were at significantly greater risk compared with GG carriers in the Asian population.
Conclusion:
The G870A polymorphism in CCND1 may not contribute to the etiology of cervical cancer in Chinese populations.
