AFAP1 and breast cancer: Partly aligning with the speculation of Zhang et al. [15], we concluded that tracking expressional trend of lncRNA AFAP1-AS1 might help to determine TNBC onset and to predict TNBC prognosis of a Chinese population (Supplementary Figure 1), which, however, failed to go for patients of other BC subtypes (Supplementary Tables 2, 3).