Phase 3 Study of Rucaparib as Switch Maintenance After Platinum in Relapsed High Grade Serous or Endometrioid Ovarian Cancer (ARIEL3)

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Status and phase: Completed; Phase 3

Conditions: Peritoneal Cancer; Fallopian Tube Cancer; Ovarian Cancer

Treatments: Drug: Placebo; Drug: Rucaparib

Study type: Interventional

Funder types: Industry

Identifiers

NCT01968213

2013-000518-39 (EudraCT Number)

CO-338-014

Details and patient eligibility

About

Patients enrolled into this study will be stratified into 3 groups based on gene mutations identified in their tumor tissue. The purpose of this study is to evaluate patient response to maintenance treatment with rucaparib versus placebo. Response to treatment will be analyzed based on homologous recombination (HR) status of tumor samples.

Full description

Rucaparib is an orally available, small molecule inhibitor of poly-adenosine diphosphate [ADP] ribose polymerase (PARP) being developed for treatment of ovarian cancer associated with homologous recombination (HR) DNA repair deficiency (HRD). Clinical data have shown that ovarian cancer patients with and without evidence of a gBRCA mutation benefit from treatment with a PARP and that maintenance treatment with a PARP inhibitor following a response to platinum-based treatment increases PFS in patients with ovarian cancer. While patients with a BRCA mutation derived the most benefit, patients without evidence of a BRCA mutation also derived significant benefit.

Patients enrolled into this study will be stratified into 3 groups based on tumor HRD status. The purpose of this study is to identify which of these groups of patients will most likely benefit from treatment with rucaparib. It is anticipated that rucaparib will provide therapeutic benefit and increase PFS in patients with HRD associated with a BRCA gene mutation or other HR gene alteration.

Enrollment: 564 patients

Sex: Female

Ages: 18+ years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• Confirmed diagnosis of high-grade serous or endometrioid epithelial ovarian, primary peritoneal, or fallopian tube cancer.
• Received ≥2 prior platinum-based treatment regimens including platinum based regimen that must have been administered immediately prior to maintenance therapy in this trial.
• Received no more than 1 non-platinum chemotherapy regimen. Prior hormonal therapy will not be counted as a non-platinum regimen.
• Must have had at least a 6-month disease-free period following prior treatment with the penultimate platinum-based chemotherapy and achieved a response.
• For the last chemotherapy course prior to study entry, patients must have received a platinum-based doublet chemotherapy regimen and have achieved a CR or PR (as defined by RECIST) and/or a GCIG CA-125 response.
• Have sufficient archival tumor tissue for analysis.

Exclusion criteria

• History of prior cancer except for non-melanoma skin cancer, breast cancer curatively > 3 years ago, curatively treated solid tumor (>5 years ago without evidence of recurrence), and synchronous endometrial cancer (Stage 1A) with ovarian cancer.
• Prior treatment with any PARP inhibitor, including rucaparib. Patients who received prior iniparib are eligible.
• Untreated or symptomatic central nervous system metastases.
• Pre-existing duodenal stent and/or any gastrointestinal disorder or defect that would, in the opinion of the Investigator, interfere with absorption of study drug.
• Required drainage of ascites during the final 2 cycles of their last platinum-based regimen and/or during the period between the last dose of chemotherapy of that regimen and randomization to maintenance treatment in this study.

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Double Blind

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564 participants in 2 patient groups, including a placebo group

Rucaparib

Experimental group

Description:

Oral tablets administered twice daily with 8 oz (240 mL) of water on an empty stomach or with food; 28-day cycles of treatment. Doses should be taken as close to 12 hours apart as possible, preferably at the same times every day. Tablets should be swallowed whole.

Treatment:

Drug: Rucaparib

Placebo

Placebo Comparator group

Description:

Oral tablets administered twice daily with 8 oz (240 mL) of water on an empty stomach or with food; 28-day cycles of treatment. Doses should be taken as close to 12 hours apart as possible, preferably at the same times every day. Tablets should be swallowed whole.

Treatment:

Drug: Placebo