Figure 2

Breast cancer-free survival in relation to IL6 diplotype. Kaplan-Meier estimates of breast cancer-free survival in relation to IL6 diplotype. Since this is an ongoing cohort, there are fewer patients with longer follow-up times. a) Breast cancer-free survival among all patients with invasive tumours (Log Rank 3 df; P = 0.83). The adjusted HR was 1.14 (95% CI 0.62–2.10; P = 0.67). b) Breast cancer-free survival among patients with invasive ER-negative tumours (Log Rank 3 df; P = 0.014). The adjusted HR was 5.91 (95% CI 1.28–27.42; P = 0.023).