Olaparib and Entinostat in Patients With Recurrent, Platinum-Refractory, Resistant Ovarian, Primary Peritoneal, Fallopian Tube Cancers

Fallopian Tube Cancer Clinical Trial

Official title: A Phase I/II Study of Olaparib With Entinostat in the Treatment of Recurrent, Platinum-Refractory or Resistant, Homologous Recombination Repair Proficient Ovarian, Primary Peritoneal, and Fallopian Tube Cancers

Status Terminated

Clinical Trial Summary

This phase I/II trial studies the side effects and best dose of olaparib and entinostat and to see how well they work in treating patients with ovarian, primary peritoneal, or fallopian tube cancers that have come back or do not respond to platinum-based chemotherapy. Olaparib and entinostat may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth.

Clinical Trial Description

PRIMARY OBJECTIVES:

I. Determine the maximum tolerated dose (MTD) for the combination of olaparib and entinostat in the treatment of recurrent, platinum-refractory or resistant high-grade serous carcinoma of the ovary, fallopian tube or peritoneum. (Phase I) II. Determine the objective response rate in patients with recurrent, platinum-refractory or resistant, homologous repair proficient (HRP) high-grade carcinoma of the ovary, fallopian tube or peritoneum treated with the combination of olaparib and entinostat at the recommended phase 2 dose, as determined in phase I of this trial. (Phase II)

SECONDARY OBJECTIVES:

I. Assess the safety and tolerability of the combination of olaparib and entinostat in patients with recurrent, platinum-refractory or resistant high-grade serous carcinoma of the ovary, fallopian tube, or peritoneum. (Phase I) II. Further assess the nature and degree of toxicity of olaparib and entinostat in this cohort of patients. (Phase II) III. Determine the clinical benefit rate (CBR) (complete response [CR] + partial response [PR] + stable disease [SD]) as assessed at the time of best response to therapy). (Phase II) IV. Determine the progression free (PFS) and overall survival (OS). (Phase II) V. Determine the duration of response (DoR). (Phase II)

EXPLORATORY OBJECTIVES:

I. Assess the correlation between the Myriad myChoice homologous recombination pathway deficiency (HRD) score and the response to treatment.

II. Assess the degree of deoxyribonucleic acid (DNA) damage in circulating tumor cells and tumor biopsies (optional) after cycle 2 and at the end of treatment by phosphorylated (p)HAX2 and PAR and correlate with the response to treatment.

III. Assess baseline cyclin E amplification in ovarian tumors by fluorescence in situ hybridization (FISH) and correlate with response to treatment.

IV. Assess the expression of ki67/mib1 as a marker of cell proliferation in circulating tumor cells and in tumor biopsy specimens (optional) after cycle 2 of therapy and at the end of treatment and correlate with response to treatment.

V. Measure cyclin E1, CDK2, E2F1, and BRD expression by immunohistochemistry in circulating tumor cells and in tumor biopsy specimens (optional) after cycle 2 of therapy and at the end of treatment and correlate with response to treatment.

OUTLINE: This is a phase I, dose-escalation study followed by a phase II study.

Patients receive entinostat orally (PO) 1 week before starting combination therapy (day -7). Patients then receive entinostat PO on days 1, 8, 15, and 22, and olaparib PO twice daily (BID) on days 1-28. Cycles repeat every 28 days in the absence of disease progression and unacceptable toxicity.

After completion of study treatment, patients are followed up at 30 days and then every 12 weeks. ;

Related Conditions & MeSH terms

• Adenocarcinoma
• Carcinoma
• Carcinoma, Endometrioid
• Carcinosarcoma
• Endometrial Neoplasms
• Fallopian Tube Cancer
• Fallopian Tube Carcinosarcoma
• Fallopian Tube Clear Cell Adenocarcinoma
• Fallopian Tube Endometrioid Adenocarcinoma
• Fallopian Tube Neoplasms
• High Grade Fallopian Tube Serous Adenocarcinoma
• High Grade Ovarian Serous Adenocarcinoma
• Mixed Tumor, Mullerian
• Ovarian Carcinosarcoma
• Ovarian Clear Cell Adenocarcinoma
• Ovarian Endometrioid Adenocarcinoma
• Primary Peritoneal Serous Adenocarcinoma
• Recurrent Endometrial Carcinoma
• Recurrent Ovarian Carcinoma
• Recurrent Primary Peritoneal Carcinoma

• NCT number: NCT03924245
• Study type: Interventional
• Source: Vanderbilt-Ingram Cancer Center
• Status: Terminated
• Phase: Phase 1
• Start date: October 1, 2020
• Completion date: February 4, 2022