Study Name: GOG-3083

Recruiting

Endometrial

GOG-3083, Selinexor in Maintenance Therapy After Systemic Therapy for Participants With p53 Wild-Type, Advanced or Recurrent Endometrial Carcinoma (XPORT-EC-042)

NCT#NCT05611931

clinicaltrials.gov/show/NCTNCT05611931

The purpose of this study is to evaluate the efficacy and safety of selinexor as a maintenance treatment in patients with p53 wt endometrial carcinoma (EC), who have achieved a partial response (PR) or complete response (CR) (per Response Evaluation Criteria in Solid Tumors version 1.1 [RECIST v 1.1]) after completing at least 12 weeks of platinum-based therapy. A total of 220 participants will be enrolled in the study and randomized in a 1:1 ratio to maintenance therapy with either selinexor or placebo.

Male and Female – 18 years and older

• Histologically confirmed EC including: endometrioid, serous, undifferentiated, and carcinosarcoma
• TP53 wt assessed by next generation sequencing (NGS), evaluated by a central vendor
• Completed a single line, at least 12 weeks of platinum-based therapy (not including adjuvant or neoadjuvant therapy for Stage I-III disease) and achieved confirmed partial or complete response (PR or CR) by imaging, according to RECIST version 1.1
• Have a life expectancy of at least 12 weeks

• Has any uterine sarcomas (carcinosarcomas - not excluded), clear cell or small cell carcinoma with neuroendocrine differentiation
• Received a blood or platelet transfusion during the 2 weeks prior to Cycle 1 Day 1 (C1D1). Participants' hemoglobin must be assessed within 2 weeks of screening and at least 1 week post transfusion
• Concurrent systemic steroid therapy higher than physiologic dose
• Any gastrointestinal dysfunctions that could interfere with the absorption of selinexor (e.g., bowel obstruction, inability to swallow tablets, malabsorption syndrome, unresolved nausea, vomiting, diarrhea CTCAE v 5.0 > grade 1)
• Participants unable to tolerate two forms of antiemetics for at least 2 cycles will not be eligible for the trial
• Females who are pregnant or lactating