MKI67 and breast cancer: Logistic regression analysis identified the elastic modulus value (odds ratio [OR]: 5.841 [3.714–6.112], p < 0.05), Ki-67 level (OR: 3.522 [1.865–3.897], p < 0.05) and molecular subtypes (OR: 4.331 [2.552–6.714], p < 0.05) as risk factors; logistic regression analysis also performed favourably for the prediction of pCR (area under the curve: 0.922 [0.871–0.934]) in patients with BC.