Figure 5. Disease-free survival according to microRNA-222 (miR-222) expression levels. (A) whole study population, (B) hormone receptor-positive subgroup, (C) hormone receptor-negative subgroup. Patients with high levels of miR-222 expression show significantly shorter disease-free survival time compared to those with low levels of miR-222 in hormone receptor-positive subgroup (B), but not in whole study population (A) and hormone receptor-negative subgroup (C).