ARIEL4: A Study of Rucaparib Versus Chemotherapy BRCA Mutant Ovarian, Fallopian Tube, or Primary Peritoneal Cancer Patients
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ClinicalTrials.gov Identifier: NCT02855944 |
Recruitment Status :
Completed
First Posted : August 4, 2016
Results First Posted : February 11, 2022
Last Update Posted : March 15, 2023
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Condition or disease | Intervention/treatment | Phase |
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Ovarian Cancer Epithelial Ovarian Cancer Fallopian Tube Cancer Peritoneal Cancer | Drug: Chemotherapy Drug: Rucaparib | Phase 3 |
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). The safety and efficacy of rucaparib has been evaluated in several Phase 1 and Phase 2 studies. An oral formulation is the focus of current development efforts. Rucaparib is currently being investigated as monotherapy in patients with cancer associated with breast cancer susceptibility gene 1 (BRCA1) or BRCA2 mutations.
While PARP inhibitors have demonstrated consistent robust clinical activity in patients with relapsed ovarian cancer associated with HRD, prospective studies evaluating efficacy and safety of PARPi versus standard of care chemotherapy have been limited. The primary purpose of this Phase 3 study is to compare the efficacy and safety of rucaparib versus chemotherapy as treatment for relapsed ovarian cancer in patients with a deleterious BRCA1/2 mutation in their tumor.
Study Type : | Interventional (Clinical Trial) |
Actual Enrollment : | 349 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Masking: | None (Open Label) |
Primary Purpose: | Treatment |
Official Title: | ARIEL4 (Assessment of Rucaparib In Ovarian CancEr TriaL): A Phase 3 Multicenter, Randomized Study of Rucaparib Versus Chemotherapy in Patients With Relapsed, BRCA Mutant, High Grade Epithelial Ovarian, Fallopian Tube, or Primary Peritoneal Cancer |
Actual Study Start Date : | March 1, 2017 |
Actual Primary Completion Date : | December 3, 2020 |
Actual Study Completion Date : | September 16, 2022 |

Arm | Intervention/treatment |
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Experimental: Rucaparib
Drug: Oral rucaparib 600 mg BID (twice a day) Other Names:
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Drug: Rucaparib
Tablets of rucaparib, at a dose of 600 mg, will be taken orally twice a day
Other Names:
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Active Comparator: Chemotherapy
Monotherapy platinum (cisplatin or carboplatin) or platinum-based doublet chemotherapy (carboplatin/paclitaxel, carboplatin/gemcitabine, or cisplatin/gemcitabine administered per local standard of care and regulations. Specific comparator will depend on platinum status and investigator decision. Single agent paclitaxel will be administered per local standard of care and regulations. Specific comparator will depend on platinum status and investigator decision. |
Drug: Chemotherapy
Chemotherapy will be administered per local standard of care and regulations. Specific comparator will depend on platinum status and investigator decision.
Other Names:
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- Investigator Assessed Progression-Free Survival (invPFS) by RECIST Version 1.1 for Rucaparib Versus Chemotherapy (Efficacy Population) [ Time Frame: Assessments every 8 weeks from Cycle 1 Day 1 (C1D1) until disease progression, death, or initiation of subsequent treatment. After 18 months on study, assessments every 16 weeks. Total follow-up was up to approximately 3.5 years. ]The primary efficacy endpoint is invPFS for the Treatment Part of the study. The time to invPFS is calculated in months as the time from randomization to disease progression +1 day, as determined by RECIST v1.1 (Response Evaluation Criteria in Solid Tumors) criteria or death due to any cause, whichever occurs first. Progression is defined using RECIST v1.1, as at least a 20% increase in the sum of the longest diameter of target lesions, or a measurable increase in a non-target lesion, or the appearance of new lesions.
- Investigator Assessed Progression-Free Survival (invPFS) by RECIST Version 1.1 for Rucaparib Versus Chemotherapy (ITT Population) [ Time Frame: Assessments every 8 weeks from C1D1 until disease progression, death, or initiation of subsequent treatment. After 18 months on study, assessments every 16 weeks. Total follow-up was up to approximately 3.5 years. ]The primary efficacy endpoint is invPFS for the Treatment Part of the study. The time to invPFS is calculated in months as the time from randomization to disease progression +1 day, as determined by RECIST v1.1 (Response Evaluation Criteria in Solid Tumors) criteria or death due to any cause, whichever occurs first. Progression is defined using RECIST v1.1, as at least a 20% increase in the sum of the longest diameter of target lesions, or a measurable increase in a non-target lesion, or the appearance of new lesions.
- Investigator Assessed Overall Response Rate (ORR) by RECIST v1.1 (Efficacy Population) [ Time Frame: Assessments every 8 weeks from C1D1 until disease progression, death, or initiation of subsequent treatment. After 18 months on study, assessments every 16 weeks. Total follow-up was up to approximately 3.5 years. ]A secondary endpoint is the ORR for the Treatment Part of the study. ORR is defined as the percentage of patients with a confirmed CR (complete response) or PR (partial response) by RECIST v1.1. The confirmed response is defined as a CR or PR on subsequent tumor assessment at least 28 days after first response documentation. CR is disappearance of all target lesions. Any pathological lymph nodes (whether target or non-target) must have reduction in short axis to <10 mm. PR is at least a 30% decrease in the sum of the longest diameter of target lesions, taking as reference the baseline sum of longest diameter.
- Investigator Assessed Overall Response Rate (ORR) by RECIST v1.1 (ITT Population) [ Time Frame: Assessments every 8 weeks from C1D1 until disease progression, death, or initiation of subsequent treatment. After 18 months on study, assessments every 16 weeks. Total follow-up was up to approximately 3.5 years. ]A secondary endpoint is the ORR for the Treatment Part of the study. ORR is defined as the percentage of patients with a confirmed CR (complete response) or PR (partial response) by RECIST v1.1. The confirmed response is defined as a CR or PR on subsequent tumor assessment at least 28 days after first response documentation. CR is disappearance of all target lesions. Any pathological lymph nodes (whether target or non-target) must have reduction in short axis to <10 mm. PR is at least a 30% decrease in the sum of the longest diameter of target lesions, taking as reference the baseline sum of longest diameter.
- Investigator Assessed Duration of Response (DOR) by RECIST v1.1 (Efficacy Population) [ Time Frame: Assessments every 8 weeks from C1D1 until disease progression, death, or initiation of subsequent treatment. After 18 months on study, assessments every 16 weeks. Total follow-up was up to approximately 3.5 years. ]A secondary endpoint is the DOR for the Treatment Part of the study. The DOR as assessed by investigator is analyzed in the subgroup of patients who had a confirmed response by RECIST v1.1. DOR for any confirmed RECIST CR or PR will be measured from the date of the first response until the first date that progressive disease (PD) is documented. DOR is calculated in months as the time from the first date of the scan showing a response to the first scan with disease progression +1 day. Any patients with an ongoing response are censored at the date of the last post-baseline scan. Only tumor scans up to and within 6 weeks of start of any subsequent anti-cancer treatment are included. Progressive disease (PD) is defined using RECIST v1.1, as at least a 20% increase in the sum of the longest diameter of target lesions, or a measurable increase in a non-target lesion, or the appearance of new lesions.
- Investigator Assessed Duration of Response (DOR) by RECIST v1.1 (ITT Population) [ Time Frame: Assessments every 8 weeks from C1D1 until disease progression, death, or initiation of subsequent treatment. After 18 months on study, assessments every 16 weeks. Total follow-up was up to approximately 3.5 years. ]A secondary endpoint is the DOR for the Treatment Part of the study. The DOR as assessed by investigator is analyzed in the subgroup of patients who had a confirmed response by RECIST v1.1. DOR for any confirmed RECIST CR or PR will be measured from the date of the first response until the first date that progressive disease (PD) is documented. DOR is calculated in months as the time from the first date of the scan showing a response to the first scan with disease progression +1 day. Any patients with an ongoing response are censored at the date of the last post-baseline scan. Only tumor scans up to and within 6 weeks of start of any subsequent anti-cancer treatment are included. Progressive disease (PD) is defined using RECIST v1.1, as at least a 20% increase in the sum of the longest diameter of target lesions, or a measurable increase in a non-target lesion, or the appearance of new lesions.
- Investigator Assessed Overall Response Rate (ORR) by RECIST v1.1 and/or CA-125 Response (Efficacy Population) [ Time Frame: Assessments every 8 weeks from C1D1 until disease progression, death, or initiation of subsequent treatment. After 18 months on study, assessments every 16 weeks. Total follow-up was up to approximately 3.5 years. ]A secondary endpoint is ORR for the Treatment Part of the study defined as the percentage of patients with best response of CR or PR using RECIST v1.1 or response per Gynecologic Cancer InterGroup Cancer Antigen 125 (GCIG CA-125) criteria. Complete response (CR) is disappearance of all target lesions. Any pathological lymph nodes (whether target or non-target) must have reduction in short axis to <10 mm. Partial response (PR) is at least a 30% decrease in the sum of the longest diameter of target lesions, taking as reference the baseline sum of longest diameter. Response to CA-125 has occurred if there is at least a 50% decrease from baseline: 1. in a sample collected after initiation of study treatment AND 2. that is confirmed in a subsequent sample collected ≥21 days after the prior sample. The absolute value of this confirmatory sample must be ≤110% of the prior sample. The date when the first sample with a 50% decrease from baseline is observed is the date of the CA-125 response.
- Investigator Assessed Overall Response Rate (ORR) by RECIST v1.1 and/or CA-125 Response (ITT Population) [ Time Frame: Assessments every 8 weeks from C1D1 until disease progression, death, or initiation of subsequent treatment. After 18 months on study, assessments every 16 weeks. Total follow-up was up to approximately 3.5 years. ]A secondary endpoint is ORR for the Treatment Part of the study defined as the percentage of patients with best response of CR or PR using RECIST v1.1 or response per Gynecologic Cancer InterGroup Cancer Antigen 125 (GCIG CA-125) criteria. Complete response (CR) is disappearance of all target lesions. Any pathological lymph nodes (whether target or non-target) must have reduction in short axis to <10 mm. Partial response (PR) is at least a 30% decrease in the sum of the longest diameter of target lesions, taking as reference the baseline sum of longest diameter. Response to CA-125 has occurred if there is at least a 50% decrease from baseline: 1. in a sample collected after initiation of study treatment AND 2. that is confirmed in a subsequent sample collected ≥21 days after the prior sample. The absolute value of this confirmatory sample must be ≤110% of the prior sample. The date when the first sample with a 50% decrease from baseline is observed is the date of the CA-125 response.
- Least Squares Mean Change From Baseline in European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30) Global Health Status Score for the First 6 Cycles (Efficacy Population) [ Time Frame: Baseline to the end of Cycle 6, or up to approximately 6 months ]EORTC QLQ-C30 is a questionnaire that rates the overall quality of life in cancer patients. The first 28 questions use a 4-point scale (1=not at all to 4=very much) for evaluating function (physical, role, social, cognitive, emotional), symptoms (diarrhea, fatigue, dyspnea, appetite loss, insomnia, nausea/vomiting, constipation, and pain) and financial difficulties. The last 2 questions use a 7-point scale (1=very poor to 7=excellent) to evaluate overall health and quality of life. Global scores are converted to a score of 0 to 100, with a higher score indicating improved health status. Mean changes from baseline global score over the first 6 cycles in the Treatment Part of the study were analyzed.
- Least Squares Mean Change From Baseline in European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30) Global Health Status Score for the First 6 Cycles (ITT Population) [ Time Frame: Baseline to the end of Cycle 6, or up to approximately 6 months ]EORTC QLQ-C30 is a questionnaire that rates the overall quality of life in cancer patients. The first 28 questions use a 4-point scale (1=not at all to 4=very much) for evaluating function (physical, role, social, cognitive, emotional), symptoms (diarrhea, fatigue, dyspnea, appetite loss, insomnia, nausea/vomiting, constipation, and pain) and financial difficulties. The last 2 questions use a 7-point scale (1=very poor to 7=excellent) to evaluate overall health and quality of life. Global scores are converted to a score of 0 to 100, with a higher score indicating improved health status. Mean changes from baseline global score over the first 6 cycles in the Treatment Part of the study were analyzed.
- Overall Survival (Efficacy Population) [ Time Frame: All patients were followed for survival up to approximately 3.5 years. ]Overall survival (OS) is defined as the number of days from the date of randomization to the date of death (due to any cause). Patients who are still alive were censored on the date of their last available visit or last date known to be alive.
- Overall Survival (ITT Population) [ Time Frame: All patients were followed for survival up to approximately 3.5 years. ]Overall survival (OS) is defined as the number of days from the date of randomization to the date of death (due to any cause). Patients who are still alive were censored on the date of their last available visit or last date known to be alive.

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.
Ages Eligible for Study: | 18 Years and older (Adult, Older Adult) |
Sexes Eligible for Study: | Female |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- Be 18 years of age at the time the informed consent form is signed
- Have a histologically confirmed diagnosis of high-grade serous or Grade 2 or Grade 3 endometrioid epithelial ovarian, fallopian tube, or primary peritoneal cancer
- Received ≥ 2 prior chemotherapy regimens and have relapsed or progressive disease as confirmed by radiologic assessment
- Have biopsiable and evaluable disease. Note: biopsy is optional for patients known to harbor a BRCA1/2 mutation
- Have sufficient archival formalin-fixed paraffin-embedded (FFPE) tumor tissue available for planned analyses
Exclusion Criteria:
- History of prior cancers except for those that have been curatively treated, with no evidence of cancer currently (provided all chemotherapy was completed >6 months prior and/or bone marrow transplant >2 years prior to first dose of rucaparib).
- Prior treatment with any PARP inhibitor
- Symptomatic and/or untreated central nervous system metastases
- Pre-existing duodenal stent and/or any other gastrointestinal disorder or defect that would, in the opinion of the Investigator, interfere with absorption of rucaparib
- Women who are pregnant or breast feeding
- Hospitalization for bowel obstruction within 3 months prior to enrollment

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT02855944

Documents provided by Clovis Oncology, Inc.:
Responsible Party: | Clovis Oncology, Inc. |
ClinicalTrials.gov Identifier: | NCT02855944 |
Other Study ID Numbers: |
CO-338-043 |
First Posted: | August 4, 2016 Key Record Dates |
Results First Posted: | February 11, 2022 |
Last Update Posted: | March 15, 2023 |
Last Verified: | February 2023 |
Studies a U.S. FDA-regulated Drug Product: | Yes |
Studies a U.S. FDA-regulated Device Product: | No |
ARIEL4 ARIEL-4 ARIEL 4 ovarian cancer fallopian tube cancer primary peritoneal cancer peritoneal cancer platinum sensitive relapsed disease PARP Inhibitor PARP rucaparib ruca homologous recombination homologous recombination deficiency |
genomic scarring loss of heterozygosity CO-338 PF-01367338 PF 01367338 CO-338-043 platinum sensitive ovarian cancer platinum sensitive fallopian tube cancer platinum sensitive primary peritoneal cancer platinum sensitive peritoneal cancer gynecological cancer Clovis Clovis oncology ARIEL2 ARIEL 2 |
Ovarian Neoplasms Carcinoma, Ovarian Epithelial Fallopian Tube Neoplasms Peritoneal Neoplasms Endocrine Gland Neoplasms Neoplasms by Site Neoplasms Ovarian Diseases Adnexal Diseases Genital Neoplasms, Female Urogenital Neoplasms Endocrine System Diseases Gonadal Disorders Carcinoma Neoplasms, Glandular and Epithelial |
Neoplasms by Histologic Type Fallopian Tube Diseases Abdominal Neoplasms Digestive System Neoplasms Digestive System Diseases Peritoneal Diseases Gemcitabine Paclitaxel Albumin-Bound Paclitaxel Cisplatin Carboplatin Rucaparib Antineoplastic Agents, Phytogenic Antineoplastic Agents Tubulin Modulators |