ERBB2 and breast cancer: In the MR‐Egger intercept test results, no indication of directional pleiotropy was observed in the relationship between triglyceride levels and the risk of overall (intercept = 0.002172842, p = 0.051), luminal A (intercept = 0.002425546, p = 0.079), or HER2‐enriched (intercept = 0.000402602, p = 0.903) breast cancer.