Conversely, miR-301a-3p is frequently overexpressed in TNBC and associated with poor prognosis; it promotes proliferation, invasion, and metastasis through a feedback loop with cancerous inhibitor of protein phosphatase 2A (Cip2a), an oncogene that is known to inhibit PP2A tumor suppressor activity in human malignancies [47,68,69]. This evidence concerns the gene PTPA and neoplasm.