Testing the Addition of Herceptin Hylecta or Phesgo to the Usual Chemotherapy for HER2 Positive Endometrial Serous Carcinoma or Carcinosarcomafor Endometrial CarcinomaSites in Saint Louis Park, Edina +325 more locationsSponsor: National Cancer Institute (NCI)Sex: Female·Age: 18+Code: NCT05256225·Phase 3·Recruiting·Listed Feb 2022Apply to this trial