- Gynecologic cancer cohort only: histologic proof of epithelial cervical, endometrial, ovarian, fallopian, or primary peritoneal cancers; allowable histologies for cervical cancer include squamous cell carcinoma, adenocarcinoma, and mixed/adenosquamous carcinoma; allowable histologies for endometrial cancer include endometrioid, serous, clear cell, mucinous, squamous, transitional cell, undifferentiated, mixed, and carcinosarcoma (this is considered a poorly differentiated epithelial tumor); allowable histologies for ovarian, fallopian, and peritoneal cancer include serous, clear cell, endometrioid, mucinous, transitional cell, undifferentiated, mixed, and carcinosarcoma