No significant difference in terms of menopausal status (pre-menopausal vs. post-menopausal; χ2 = 0.004, p < 0.9475), nodal status (negative vs. positive; χ2 = 1.001, p < 0.3170), stage (stage I vs. IIA vs. IIB vs. III; χ2 = 2.265, p < 0.5192) or molecular sub-type (TNBC vs. luminal vs. HER2 status; χ2 = 0.547, p < 0.7607) was found between the two cohorts, with the exception of tumor size (T1 vs. T2 vs. T3 combined with T4; χ2 = 9.358, p < 0.0093). This evidence concerns the gene ERBB2 and neoplasm.