Fig. 2
From: Epigenetic regulation of ID4 in breast cancer: tumor suppressor or oncogene?
Kaplan–Meier survival curves indicate a better survival for high ID4 expression in patients with ER+ tumors. a–b Overall survival curves calculated by KM plotter, for patients with tumors classified as ER+ (a) and ER− (b) respectively. Survival probability is represented on the y-axis, time (in months) on the x-axis. Black curve corresponds to low ID4 expression, and red curves to high ID4 expression. As can be noticed, only in a ER+ context the enhanced expression of ID4 contributes to a difference in OS (panel a)