A similar trend was observed for OS in all breast cancer subtypes (luminal A, HR: 1.74, CI 1.03–2.93; log rank p = 0.035; HER2+, HR: 2.57, CI 1.15–5.73, log rank p = 0.017; basal, HR: 2, CI 1.04–3.83, log rank p = 0.034 luminal B, HR: 3.45, CI 1.42–8.36, log rank p = 0.0036, (Figure 4B). Here, ERBB2 is linked to breast cancer.