lncRNA WFDC21P plays pivotal roles in rheumatoid arthritis, multiple sclerosis, and gastric cancer (14–16), but its roles in TNBC development are unclear. A recent study has reported that WFDC21P is upregulated by miR-4293 and plays an oncogenic role in lung cancer (17). Here, WFDC21P is linked to rheumatoid arthritis.