Fig. 6: Overall survival in patients with advanced HER2-negative breast cancer according to HER2 expression.
From: Clinical, pathological, and PAM50 gene expression features of HER2-low breast cancer

The figure shows Kaplan–Meier curves of overall survival for HER2-low vs HER2 0 tumors in the HR-positive (A) and TNBC (C) populations, as well as OS curves for HER2 2+ vs. HER2 1+ vs. HER2 0 tumors for the HR-positive (B) and TNBC (D) populations with number at risk shown at the bottom of each box. p-values for log-rank tests are also reported; HR-positive hormone receptor positive, TNBC triple-negative.