FOXP3 and uterine corpus sarcoma: Polo-like kinase 4 (PLK4), Secreted Protein, Acidic and Rich in Cysteine (SPARC) Related Modular Calcium Binding 2 (SMOC2), Special AT-rich Sequence-Binding protein 2 (SATB2), or Forkhead box P3 (FOXP3) + T cells have all been suggested as prognostic indicators for uterine sarcomas [10].