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Wu S, Ma X, Zhang X, Shi C, Cao M, Yang C, Qi Y, Liu Y. Relationship between oily fish intake and breast cancer based on estrogen receptor status: a Mendelian randomization study. Breast Cancer Res Treat 2024; 203:145-152. [PMID: 37787818 DOI: 10.1007/s10549-023-07130-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Accepted: 09/18/2023] [Indexed: 10/04/2023]
Abstract
OBJECTIVE We used a Mendelian randomization (MR) method in our research to examine the relationship between genetically determined oily fish intake and breast cancer (BC) incidence. METHODS The summary data pertaining to the oily fish intake were acquired from the UK Biobank, which consisted of a sample size of 460,443 people. Information on BC was received from the Breast Cancer Association Consortium (BCAC). We analyzed the causal connection between oily fish intake and BC incidence using various methods, including inverse variance weighting (IVW). Heterogeneity was investigated using Cochran's Q test. IVW, MR-Egger, and MR-PRESSO methods were used for sensitivity analysis. In addition, a multivariate MR adjusted for body mass index (BMI) and weight was used for further research. RESULTS Two-sample MR results showed that oily fish intake was negatively associated with total breast cancer (odds ratio (OR) 0.58, 95% confidence interval (CI) 0.39-0.87, IVW method), estrogen receptor-positive (ER +) breast cancer (OR 0.44, 95% CI 0.21-0.93, IVW method), and estrogen receptor-negative (ER-) breast cancer (OR 0.53, 95% CI 0.30-0.93, IVW method). The sensitivity analysis did not observe the presence of heterogeneity and horizontal pleiotropy. In multivariate MR analysis, the negative association between oily fish intake and total breast cancer (P = 0.03) and ER- breast cancer (P = 0.04) risk persisted after adjusting for BMI and body weight. However, no correlation was found in ER + breast cancer (P = 0.30). CONCLUSION The oily fish intake has a negatively correlated with the incidence of total breast cancer, particularly in the cases of ER- breast cancer. There is a lack of substantial evidence supporting a link between the oily fish intake and the incidence of ER + breast cancer.
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Affiliation(s)
- Shang Wu
- Breast Center, The Fourth Hospital of Hebei Medical University, Shijiazhuang, 050011, China
- Hebei Provincial Key Laboratory of Tumor Microenvironment and Drug Resistance, Hebei Medical University, Shijiazhuang, 050017, China
| | - Xindi Ma
- Breast Center, The Fourth Hospital of Hebei Medical University, Shijiazhuang, 050011, China
- Hebei Provincial Key Laboratory of Tumor Microenvironment and Drug Resistance, Hebei Medical University, Shijiazhuang, 050017, China
| | - Xiangmei Zhang
- Hebei Provincial Key Laboratory of Tumor Microenvironment and Drug Resistance, Hebei Medical University, Shijiazhuang, 050017, China
- Research Center, The Fourth Hospital of Hebei Medical University, Shijiazhuang, 050011, China
| | - Chao Shi
- Breast Center, The Fourth Hospital of Hebei Medical University, Shijiazhuang, 050011, China
- Hebei Provincial Key Laboratory of Tumor Microenvironment and Drug Resistance, Hebei Medical University, Shijiazhuang, 050017, China
| | - Miao Cao
- Hebei Provincial Key Laboratory of Tumor Microenvironment and Drug Resistance, Hebei Medical University, Shijiazhuang, 050017, China
| | - Chao Yang
- Breast Center, The Fourth Hospital of Hebei Medical University, Shijiazhuang, 050011, China
- Hebei Provincial Key Laboratory of Tumor Microenvironment and Drug Resistance, Hebei Medical University, Shijiazhuang, 050017, China
| | - Yirui Qi
- Hebei Provincial Key Laboratory of Tumor Microenvironment and Drug Resistance, Hebei Medical University, Shijiazhuang, 050017, China
| | - Yunjiang Liu
- Breast Center, The Fourth Hospital of Hebei Medical University, Shijiazhuang, 050011, China.
- Hebei Provincial Key Laboratory of Tumor Microenvironment and Drug Resistance, Hebei Medical University, Shijiazhuang, 050017, China.
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