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438 The use of neoadjuvant chemotherapy in advanced endometrial cancer
  1. L Philp1,
  2. A Kanbergs2,
  3. J St Laurent2,
  4. W Growdon1,
  5. C Feltmate3 and
  6. AK Goodman1
  1. 1Department of Obstetrics and Gynecology, Division of Gynecologic Oncology, Massachusetts General Hospital, USA
  2. 2Department of Obstetrics and Gynecology, Massachusetts General Hospital and Brigham and Women’s Hospital, USA
  3. 3Department of Obstetrics and Gynecology, Division of Gynecologic Oncology, Brigham and Women’s Hospital, USA


Objective To review the use of neoadjuvant chemotherapy (NACT) followed by interval cytoreductive surgery in patients presenting with advanced, unresectable endometrial cancer at two large cancer centers.

Methods In this retrospective cohort study, patients with advanced endometrial cancer treated with neoadjuvant chemotherapy between 2008 – 2015 were identified from an institutional database. Clinical and surgical variables were analyzed and time to recurrence and death was calculated and compared between surgical groups.

Results Thirty-three patients were identified (mean age 64.8 (range 42–86 years)). Overall, 28% of patients had endometrioid histology, 48% serous, 4% clear cell, 4% carcinosarcoma, 12% mixed and 4% other. Ineligibility for primary surgery was due to unresectable disease (85%), comorbidities (6%) and unknown reasons (9%). All patients received NACT with 91% of patients receiving carboplatin and paclitaxel. On reimaging, 12% of patients had progressed, 76% had a partial response and 3% had a complete response to chemotherapy. 76% of patients underwent interval surgery, with cytoreduction to no visible residual disease achieved in 52%. Overall, 91% of patients recurred and 85% died during follow-up. Patients undergoing surgery after chemotherapy had significantly longer progression-free survival (11.53 vs. 4.99 months, p=0.0096) and overall survival (24.13 vs. 7.04 months, p=0.0042) when compared to patients who did not have surgery.

Conclusions Neoadjuvant chemotherapy is a feasible treatment option to allow for interval cytoreductive surgery in patients with advanced endometrial cancer not amenable to primary debulking. Patients who undergo surgery after chemotherapy have significantly improved progression free and overall survival.

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