It was indicated that high lncRNA AFAP1-AS1 level was associated with advanced histological grade (III vs. I+II: OR=3.37, 95%CI: 1.436-7.908), large tumor size (T3 vs. T1+T2: OR=2.462, 95%CI: 1.036-5.847), lymph-node metastasis (yes vs. no: OR=2.591, 95%CI: 1.126-5.963) and high proportion of Ki-67 (>14% vs. ≤14%: OR=2.516, 95% CI: 1.082-5.849) of TNBC patients in comparison to low lncRNA AFAP-AS1 level (all P<0.05), however, these associations were hardly discerned in the non-TNBC cohort (Supplementary Table 2). This evidence concerns the gene AFAP1 and metastatic malignant neoplasm in the lymph nodes.