Wu J, Lei X, Pan X, Zeng X, Li W. Association between serum lipids and breast cancer risk in premenopausal women: systematic review and meta-analysis.
J Int Med Res 2021;
49:3000605211061033. [PMID:
34851759 PMCID:
PMC8647251 DOI:
10.1177/03000605211061033]
[Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Objective
Associations between serum lipids and their individual components with
premenopausal breast cancer risk are unclear. This meta-analysis summarized
the literature on serum lipids and premenopausal breast cancer risk to
elucidate their relationship.
Methods
Eligible studies were identified by searching the PubMed, Embase, China
National Knowledge Infrastructure, and Wanfang databases until 31 December
2020. Standardized mean difference (SMD) scores with 95% confidence
intervals (95%CIs) were used to assess the impact of serum lipids on
premenopausal breast cancer risk. The I2 statistic was calculated
to measure the percentage of heterogeneity, and Egger’s test was performed
to measure publication bias.
Results
Thirteen studies were included. The SMD scores of triglycerides (TG) and
low-density lipoprotein cholesterol (LDL-C) were 12.90 (95%CI: 7.19–18.61)
and 31.43 (95%CI: 8.72–54.15), respectively. The SMD scores of total
cholesterol (TC) and high-density lipoprotein cholesterol (HDL-C) were not
significantly different between the groups. The included studies were highly
heterogeneous. There were no publication biases found in TC, LDL-C, or HDL-C
analyses, whereas publication bias was present in the TG analysis.
Conclusions
TG and LDL-C were higher in premenopausal breast cancer patients than in
women without breast cancer. However, no significant differences were found
in TC or HDL-C levels.
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