A Randomized, Placebo-controlled, Double-blind, Multicenter Phase 1b/2 Study of Avelumab With or Without Entinostat in Patients With Advanced Epithelial Ovarian Cancer Which Has Progressed or Recurred After First-line Platinum-based Chemotherapy and at Least Two Subsequent Lines of Treatment With a Safety Lead-in
The purpose of this study is to determine the biologically active dose of entinostat, when given in combination with avelumab, that is safe and warrants further investigation. Additionally, this study will evaluate the effectiveness of entinostat in combination with avelumab at the determined dose in terms of progression free survival compared to avelumab plus placebo in patients with refractory or recurrent epithelial ovarian cancer.
All patients will be assessed at Screening and at specified times during the conduct of the study using standard clinical and laboratory assessments. Patients will be assessed for response through radiological assessments. Patients will continue receiving their appropriate cycles of study treatment until tumor progression or adverse events (AEs) occur which necessitate discontinuing therapy as determined by the Investigator.
18 Years and up
Accepting Healthy Volunteers?
- Histologically or cytologically confirmed epithelial ovarian, fallopian tube, or peritoneal cancer
- Recurrent or progressive disease on or after initial platinum-based chemotherapy
- Evidence of measurable disease based on imaging studies within 28 days before the first dose of study drug
- Previously received at least 3, but no more than 6, lines of therapy including at least 1 course of platinum-based therapy
- Patient must have acceptable, applicable laboratory requirements
- Patients may have a history of brain metastasis provided certain protocol criteria are met
- Experienced resolution of toxic effect(s) of the most recent prior anti-cancer therapy to Grade ≤1 (except alopecia or neuropathy)
- Able to understand and give written informed consent and comply with study procedures.
- Non-epithelial ovarian carcinomas or ovarian tumors with low malignant potential (i.e., borderline tumors)
- Another known malignancy that is progressing or requires active treatment (excluding adequately treated basal cell carcinoma or cervical intraepithelial neoplasia/cervical carcinoma in situ or melanoma in situ). Prior history of other cancer is allowed, as long as there is no active disease within the prior 5 years.
- Diagnosis of immunodeficiency or receiving systemic steroid therapy or any other form of immunosuppressive therapy within 7 days prior to enrollment.
- Active autoimmune disease that might deteriorate when receiving an immunostimulatory agent
- Previously treated with a histone deacetylase inhibitor (i.e., vorinostat, belinostat, romidepsin, panobinostat), PD-1/PD-L1-blocking antibody (i.e., atezolizumab, nivolumab, pembrolizumab), or a cytotoxic T-lymphocyte associated protein-4 (CTLA-4) agent
- Currently enrolled in (or completed) another investigational drug study within 30 days prior to study drug administration
- A medical condition that precludes adequate study treatment or increases patient risk