We further calculated the correlation between p53 and COL4A1 by GEPIA2 (P=0.00076, R = 0.1, Figure 5(a)) (http://gepia2.cancer-pku.cn/#correlation) and investigated the COL4A1 prognostic impact on BC patients who received neoadjuvant chemotherapy (P=0.057, Figure 5(b)) [25]. The gene discussed is COL4A1; the disease is breast cancer.