In addition, the relationships between miR-520c-3p expression and clinical characteristics of 38 patients with breast cancer were analyzed, and we found that miR-520c-3p was significantly associated with invasion (P = 0.018), lymphatic metastasis (P = 0.0003), distant metastasis (P = 0.0016), and TNM stage (P = 0.0003), which has a negative relationship with HOXA-AS2 (Table 2). Here, HOXA-AS2 is linked to breast cancer.