MDM2 and cervical cancer: Figure 1 shows the flow diagram of the selection process. Of these, 9 articles reported the results of MDM2 rs2279744 polymorphism and 23 articles focused on the TP53 rs1042522 polymorphism. 2 articles presented the association between cervical cancer and MDM2 rs2279744 and TP53 rs1042522 polymorphisms. Tables 1, 2 summarize the extracted data. 17 studies scored ≥ 7 on the NOS, which indicated that these studies were of high quality. 13 studies scored 4-6, indicating moderate quality. Supplementary Files 1 showed the NOS score for each study.