We found that hsa_circ_001783 expression was significantly correlated with tumor size (P < 0.001), lymph node (LN) status (P < 0.001), TNM stage (P < 0.001), ER status (P = 0.02), PR status (P < 0.001), molecular subtype (TNBC vs. non-TNBC, P < 0.001), and Ki-67 index (P = 0.008), but not with age, menopause, HER2 status, and histological grade (Table 1). Here, MKI67 is linked to neoplasm.