Investigation of the causal relationship of saturated fat acids on heart stroke: evidence from two-sample Mendelian randomization
摘要
We conducted the Mendelian Randomization (MR) analysis to investigate the causal relationship between serum saturated fatty acids (SFAs) and the risk of heart stroke (HS).
MethodsThe MRC-IEU Consortium provided summary statistics datasets related to SFAs, encompassing 64,979 individuals of European descent. Genetic variants associated with HF were identified using a GWAS dataset comprising 461,880 participants (cases = 7,055, controls = 454,825) of European descent from the UK Biobank. Generalized summary Mendelian Randomization (GSMR) assessed the potential association. Additionally, we performed a two-sample Mendelian Randomization (TSMR). The odds ratio (OR) with 95% confidence intervals (CIs) was indicated.
ResultsThe GSMR results suggested no significant between SFA and HS [OR = 1.002, 95% CI: 0.995, 1.009; P-value = 0.752]. TSMR revealed [ORIVW = 1.005, 95% CI: 0.998, 1.012; P-value = 0.169]. MR Egger (Q = 6.14, Q_pvalue = 0.292), IVW (Q = 6.24, Q_pvalue = 0.396; I2 = 18.7%) for heterogeneity test, and Egger intercept = 1.14 × e-4, p-value = 0.792 for pleiotropy test were performed. These findings remained consistent across various Mendelian Randomization methods, including IVW [OR = 1.005, 95% CI: 0.99–1.01, p-value = 0.169], Simple median [OR = 1.009, 95% CI: 0.99–1.02, p-value = 0.08], MR-Egger [OR = 1.001, 95% CI: 0.97–1.03, p-value = 0.97], Robust Adjusted Profile Score [OR = 1.005, 95% CI: 0.99–1.01, p-value = 0.167], MR-Lasso [OR = 1.005, 95% CI: 0.99–1.01, p-value = 0.169], Constrained maximum likelihood (MR-cML) [OR = 1.006, 95% CI: 0.99–1.01, p-value = 0.168], Weighted mode [OR = 1.01, 95% CI: 0.99–1.02, p-value = 0.279], Maximum-likelihood method [OR = 1.005, 95% CI: 0.99–1.01, p-value = 0.158].
ConclusionOur MR study did not yield convincing evidence supporting the association of SFAs with HF risk. Future studies should focus on alternative approaches to investigate this association.