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A Randomized, Open-Label, Phase 2 Study of the IDO Inhibitor Epacadostat Versus Tamoxifen for Subjects With Biochemical-Recurrent-Only Epithelial Ovarian Cancer, Primary Peritoneal Carcinoma, or Fallopian Tube Cancer Following Complete Remission With First-Line Chemotherapy


Brief Summary
This is an open-label, randomized, phase 2 study of an IDO inhibitor, INCB024360 (epacadostat) versus tamoxifen in biochemical recurrent only ovarian cancer patients following complete remission with first-line chemotherapy.


Phase 2 - takes the treatment one step further, assessing the activity of a particular therapy in a disease, often building upon leads from the Phase I trial. While patients are generally required to be previously untreated, participation in a Phase II trial doesn't usually preclude the patient from getting the standard treatment after they've received the investigational agent. At best they are allowed to get a new drug they wouldn't be able to get otherwise that may turn out to be better for their disease.

Inclusion and Exclusion Criteria

  • - Subjects who have received first-line chemotherapy, which must have been a platinum-containing regimen. - Subjects who received maintenance paclitaxel or, bevacizumab, or alternative maintenance therapy (e.g. vaccines) are eligible for enrollment provided they have discontinued therapy at least 4 weeks for prior taxane and, at least 8 weeks for bevacizumab, or received medical monitor approval for time lapse from alternative maintenance therapy prior to randomization and recovered from toxicities to less than Grade 2. - Subject must be currently in remission by clinical and radiological criteria (Response Evaluation Criteria for Solid Tumors [RECIST 1.1]). a. If a PET scan or high-resolution CT scan is performed and demonstrates new disease
  • If CA 125 is ≥ 2 × ULN the confirmatory value only needs to be 1 week apart.
  • CA 125 elevation is defined as a value that is at least 2 × ULN on 2 occasions at least 1 week apart (UK ONLY REQUIREMENT). - CA 125 elevation must be at least 3 months from completion of first-line platinum-containing regimen. - Documentation of at least 1 normal CA 125 level at approximately 3 months during or following first line therapy is required. - Subjects must have available archived tumor tissue. - Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1. - Adequate renal, hepatic, and bone marrow function based on screening laboratory assessments.

  • Subjects with any evidence of new disease (> 1 cm) including new ascites as confirmed by imaging.
  • Any other prior antitumor systemic therapy except for first-line chemotherapy associated with previous CA 125 normalization or maintenance paclitaxel, bevacizumab, or alternative maintenance therapy as approved by the medical monitor.
  • Subjects with prior radiotherapy within 3 months of randomization and have not recovered from all radiotherapy-related toxicities, who have received radiation therapy to the chest within 3 months of randomization, or who have a history or radiation pneumonitis.
  • Subjects with protocol-specified active autoimmune processes except vitiligo or thyroiditis.
  • Subjects receiving investigational study drug for any indication, immunological-based treatment for any reason (except completed adjuvant therapy with medical monitor approval), or potent CYP3A4 inducers or inhibitors.
  • Subjects receiving monoamine oxidase inhibitors (MAOIs) within the 21 days prior to screening; subjects who have ever had Serotonin Syndrome (SS) after receiving 1 or more serotonergic drugs.
  • Subjects for whom tamoxifen therapy is contraindicated.


Please contact Anayansi Miloud to learn more about where you can participate in this trial. Please use the contact form on the right side.

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