IGF1 and breast cancer: As shown in Figure 1, unadjusted Kaplan–Meier curves identified that compared with patients with low IGF1, patients with high IGF1 exhibited lower cumulative incidence of all-cause mortality (1.3 vs. 2.8%, P = 0.007) and breast cancer-specific mortality (1.1 vs. 2.1%, P = 0.038).