The relationship between apolipoprotein E gene ε2/ε3/ε4 polymorphism and breast cancer risk: a systematic review and meta-analysis
| Autor: | Tian-Chang Wang, Yunlong Liu, Xiao-Cheng Dong, Hongguang Bao, Xiao-Ling Li, Yu-Hang Bao, Hongming Pan, Hao-Min Zhang, Jing Xue |
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| Rok vydání: | 2016 |
| Předmět: |
0301 basic medicine
Oncology medicine.medical_specialty business.industry Publication bias Odds ratio Bioinformatics medicine.disease OncoTargets and Therapy Confidence interval 03 medical and health sciences 030104 developmental biology 0302 clinical medicine Breast cancer 030220 oncology & carcinogenesis Meta-analysis Internal medicine Statistical significance Medicine Pharmacology (medical) Restriction fragment length polymorphism business Genotyping |
| Zdroj: | OncoTargets and Therapy. :1241 |
| ISSN: | 1178-6930 |
| DOI: | 10.2147/ott.s94228 |
| Popis: | Yun-Long Liu,1 Hao-Min Zhang,1 Hong-Ming Pan,2 Yu-Hang Bao,2 Jing Xue,2 Tian-Chang Wang,1 Xiao-Cheng Dong,1 Xiao-Ling Li,3 Hong-Guang Bao1 1Department of Chest Surgery, The Second Affiliated Hospital of Qiqihar Medical University, 2Basic Medical Science College, Qiqihar Medical University, Qiqihar, Heilongjiang, People’s Republic of China; 3Department of Anatomy, Basic Medical Science College, Qiqihar Medical University, Qiqihar, Heilongjiang, People’s Republic of China Objective: We conducted a systematic review and meta-analysis aiming to assess the relationship between apolipoprotein E (APOE) gene ε2/ε3/ε4 polymorphism and breast cancerrisk. Methods: Yun-Long Liu and Hao-Min Zhang independently completed literature retrieval and data collection, and statistical analyses were performed by Stata. Individual odds ratio (OR) and 95% confidence interval (CI) were pooled in a random-effects model using the DerSimonian–Laird method. Heterogeneity was evaluated by I2 statistic at a significance level of 50%. Publication bias was assessed by Egger’s test. Results: Eleven articles including 2,074 breast cancer patients and 2,372 controls were summarized. Using the most common allele ε3 as a reference, the ε2 (OR =0.87, 95% CI=0.72–1.05, P=0.154, I2=0.0%) and ε4 (OR =1.07, 95% CI =0.80–1.42, P=0.654, I2=71.8%) alleles were not found to be significantly associated with breast cancer risk in the overall analyses. Subgroup analyses revealed that the comparison of allele ε4 with ε3 was significant in Asians (OR =1.58, 95% CI =1.17–6.32, P=0.003, I2=12.1%) and in studies that used the restriction fragment length polymorphism (RFLP) genotyping method (OR =1.27; 95% CI =1.01–1.61, P=0.045, I2=34.3%), and was marginally significant in hospital-based studies (OR =1.33; 95% CI=0.98–1.79, P=0.065, I2=30.2%), without heterogeneity. Moreover, the presence of the ε2 allele was significantly associated with breast cancer in small studies (total sample size |
| Databáze: | OpenAIRE |
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