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Zhu X, Wang Z, He J, Wang W, Xue W, Wang Y, Zheng L, Zhu ML. Associations between CYP1A1 rs1048943 A > G and rs4646903 T > C genetic variations and colorectal cancer risk: Proof from 26 case-control studies. Oncotarget 2016; 7:51365-51374. [PMID: 27384991 PMCID: PMC5239481 DOI: 10.18632/oncotarget.10331] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Accepted: 06/03/2016] [Indexed: 02/07/2023] Open
Abstract
Cytochrome P450 1A1 (CYP1A1) enzyme is one of the most important metabolizing enzymes responsible for the metabolism of numerous xenobiotics. Numerous individual case-control studies have investigated the associations between the CYP1A1 rs1048943 A > G and rs4646903 T > C genetic variations and colorectal cancer (CRC) risk, but the conclusions were controversial. To obtain a scientific conclusion, we performed a meta-analysis based on a total of 26 publications, including 20 studies with 8665 cases and 9953 controls on rs1048943 A > G and 19 studies with 6416 cases and 7551 controls on rs4646903 T > C, respectively. The pooled analysis indicated that rs1048943 A > G was associated with an increased risk of CRC (G vs. A: OR = 1.28, 95% CI = 1.08-1.52; GG vs. AA: OR = 1.54, 95% CI = 1.25-1.91; GA vs. AA: OR = 1.26, 95% CI = 1.00-1.60; GG/GA vs. AA: OR = 1.31, 95% CI = 1.05-1.64; GG vs. GA/AA. OR = 1.56, 95% CI = 1.26-1.91). Stratification analysis showed the association between rs1048943 A > G and CRC risk was more obvious in studies with the population-based (PB) design or high quality score. The association between rs4646903 T > C and CRC risk did not reach statistical significance in the pooled analysis as well as stratification analysis. This meta-analysis demonstrated CYP1A1 rs1048943 A > G may increase the susceptibility to CRC instead of rs4646903 T > C. This conclusion suggested CYP1A1 may contribute to the pathogenesis of CRC.
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Affiliation(s)
- Xueru Zhu
- 1 Department of Oncology, Xin Hua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Yangpu, Shanghai, China
| | - Zhao Wang
- 2 Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Department of Experimental Research, Collaborative Innovation Center for Cancer Medicine, Guangzhou, Guangdong, China
| | - Jing He
- 2 Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Department of Experimental Research, Collaborative Innovation Center for Cancer Medicine, Guangzhou, Guangdong, China
- 3 Department of Pediatric Surgery, Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Weiye Wang
- 4 Shanghai Key Laboratory of Children's Environmental Health, Xin Hua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Yangpu, Shanghai, China
| | - Wenji Xue
- 1 Department of Oncology, Xin Hua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Yangpu, Shanghai, China
| | - Yiwei Wang
- 1 Department of Oncology, Xin Hua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Yangpu, Shanghai, China
| | - Leizhen Zheng
- 1 Department of Oncology, Xin Hua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Yangpu, Shanghai, China
| | - Mei-Ling Zhu
- 1 Department of Oncology, Xin Hua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Yangpu, Shanghai, China
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