TNFRSF21 and breast cancer: Analysis on TCGA-based dataset for human BC tissues showed that BL-BC subtype representing TNBC highly expressed FAS, LTBR, TNFRSF10B, TNFRSF10D, TNFRSF11A, TNFRSF13B, TNFRSF21, and TNFRSF25 (Figure 5A and 5B).