As the results from the first dataset showed, the odds of LN involvement decreased by 1.5% for each year increase in age (OR 0.985, 95% CI 0.979–0.991), increased by 25–30% for each centimeter increase in tumor size (OR 1.262, 95% CI 1.197–1.331), and increased in ERBB2+ and basal-like subtypes (OR 1.303, 95% CI 1.203–1.411). This evidence concerns the gene ERBB2 and neoplasm.