Durvalumab Treatment in Combination With Chemotherapy and Bevacizumab, Followed by Maintenance Durvalumab, Bevacizumab and Olaparib Treatment in Advanced Ovarian Cancer Patients (DUO-O)
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ClinicalTrials.gov Identifier: NCT03737643 |
Recruitment Status :
Active, not recruiting
First Posted : November 9, 2018
Last Update Posted : April 21, 2023
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Condition or disease | Intervention/treatment | Phase |
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Advanced Ovarian Cancer | Drug: Bevacizumab Drug: Durvalumab Drug: Olaparib Drug: Placebo olaparib Drug: Durvalumab placebo Drug: Carboplatin+Paclitaxel | Phase 3 |
Eligible patients will be those patients with newly diagnosed, histologically confirmed advanced (Fédération Internationale de Gynécologie et d'Obstétrique [FIGO] Stage III-IV) ovarian, primary peritoneal cancer and/or fallopian-tube cancer. All patients should be candidates for cytoreductive surgery which could be conducted as immediate upfront primary surgery following diagnosis or can be conducted after initiation of platinum based neoadjuvant chemotherapy. All patients should be eligible to start first line platinum based chemotherapy in combination with bevacizumab.
The study aims to evaluate the efficacy and safety of standard of care (SoC) platinum-based chemotherapy and bevacizumab followed by maintenance bevacizumab either as monotherapy, or in combination with durvalumab, or in combination with durvalumab and olaparib. Therefore, this study aims to see which combination allows patients to live longer without the cancer coming back or getting worse. The study is also looking to see which combination makes patients live longer and how the treatment and the cancer affects their quality of life.
Study Type : | Interventional (Clinical Trial) |
Actual Enrollment : | 1404 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Intervention Model Description: | The study consists of 2 independent cohorts: 3 double-blind treatment arms cohort for patients with no tBRCA mutation, and a single open label arm cohort for patients with tBRCA mutation |
Masking: | Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor) |
Primary Purpose: | Treatment |
Official Title: | A Phase III Randomised, Double-Blind, Placebo-Controlled, Multicentre Study of Durvalumab in Combination With Chemotherapy and Bevacizumab, Followed by Maintenance Durvalumab, Bevacizumab and Olaparib in Newly Diagnosed Advanced Ovarian Cancer Patients (DUO-O). |
Actual Study Start Date : | January 4, 2019 |
Estimated Primary Completion Date : | June 23, 2023 |
Estimated Study Completion Date : | May 25, 2028 |

Arm | Intervention/treatment |
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Active Comparator: Arm 1
Platinum-based chemotherapy in combination with bevacizumab and durvalumab placebo (saline IV infusion) followed by maintenance bevacizumab, durvalumab placebo (saline IV infusion) and olaparib placebo (tablets).
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Drug: Bevacizumab
Bevacizumab by intravenous infusion. In tBRCAm cohort bevacizumab is optional according to local practice. Drug: Placebo olaparib Placebo tablets to match olaparib Drug: Durvalumab placebo Matching placebo for intravenous infusion Drug: Carboplatin+Paclitaxel Standard of care chemotherapy |
Experimental: Arm 2
Platinum-based chemotherapy in combination with bevacizumab and durvalumab followed by maintenance bevacizumab, durvalumab and olaparib placebo.
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Drug: Bevacizumab
Bevacizumab by intravenous infusion. In tBRCAm cohort bevacizumab is optional according to local practice. Drug: Durvalumab Durvalumab by intravenous infusion Drug: Placebo olaparib Placebo tablets to match olaparib Drug: Carboplatin+Paclitaxel Standard of care chemotherapy |
Experimental: Arm 3
Platinum-based chemotherapy in combination with bevacizumab and durvalumab followed by maintenance bevacizumab, durvalumab and olaparib.
|
Drug: Bevacizumab
Bevacizumab by intravenous infusion. In tBRCAm cohort bevacizumab is optional according to local practice. Drug: Durvalumab Durvalumab by intravenous infusion Drug: Olaparib Olaparib tablets Drug: Carboplatin+Paclitaxel Standard of care chemotherapy |
Experimental: tBRCAm cohort
Platinum-based chemotherapy in combination with bevacizumab and durvalumab followed by maintenance bevacizumab, durvalumab and olaparib. Bevacizumab is optional according to local practice.
|
Drug: Bevacizumab
Bevacizumab by intravenous infusion. In tBRCAm cohort bevacizumab is optional according to local practice. Drug: Durvalumab Durvalumab by intravenous infusion Drug: Olaparib Olaparib tablets Drug: Carboplatin+Paclitaxel Standard of care chemotherapy |
- Progression Free Survival (PFS) - in non-tBRCA HRD positive patients [ Time Frame: Approximately 4 years ]Defined as time from randomisation to first progression by investigator assessment using modified RECIST 1.1 or death (by any cause in the absence of progression)
- Progression Free Survival (PFS) - in all non-tBRCA patients [ Time Frame: Approximately 4 years ]Defined as time from randomisation to first progression by investigator assessment using modified RECIST 1.1 or death (by any cause in the absence of progression)
- Progression Free Survival (PFS) - in non-tBRCAm patients [ Time Frame: Approximately 4 years ]Defined as time from randomisation to first progression by investigator assessment using modified RECIST 1.1 or death (by any cause in the absence of progression)
- Overall Survival (OS) - in non-tBRCA HRD positive patients and in all non-tBRCA patients [ Time Frame: Approximately 7 years ]Defined as the time from randomisation to death due to any cause
- Second Progression (PFS2) - in non-tBRCAm patients [ Time Frame: Approximately 7 years ]Defined as time from randomisation to second progression by investigator assessment of radiological progression, symptomatic progression or death (by any cause in the absence of progression)
- Health-related quality of life - in non-tBRCAm patients [ Time Frame: Approximately 4 years ]Change from baseline in the physical functioning subscale of the EORTC-QLQ-C30
- Pathological Complete Response (pCR) - in non-tBRCAm patients [ Time Frame: Approximately 4 years ]Defined as the proportion of patients with pCR in patients undergoing IDS
- The pharmacokinetics (PK) and immunogenicity of durvalumab and olaparib as determined by peak concentration - in non-tBRCAm patients [ Time Frame: Approximately 4 years ]Determination of durvalumab concentration in serum and olaparib concentration in plasma in a subset of patients
- Objective Response Rate (ORR) - in non-tBRCAm patients [ Time Frame: Approximately 4 years ]Defined as the number (%) of patients with at least one investigator-assessed visit response of CR or PR as per RECIST 1.1
- Duration of response (DoR) - in non-tBRCAm patients [ Time Frame: Approximately 4 years ]Defined as the time form the date of first documented response (CR/PR) until the first progression or death in the absence of disease progression
- Time to first subsequent therapy (TFST) - in non-tBRCAm patients [ Time Frame: Approximately 7 years ]Time elapsed from randomisation to first subsequent therapy or death
- Time to second subsequent therapy (TSST) - in non-tBRCAm patients [ Time Frame: Approximately 7 years ]Time elapsed from randomisation to second subsequent therapy or death
- Time to discontinuation or death (TDT) - in non-tBRCAm patients [ Time Frame: Approximately 4 years ]Time elapsed from randomisation to study treatment discontinuation or death
- PFS - in tBRCAm patients [ Time Frame: Approximately 4 years ]To assess the potential additional clinical benefit of durvalumab added to SoC and olaparib in the first line treatment of tBRCAm patients
- PFS2 - in tBRCAm patients [ Time Frame: Approximately 7 years ]To assess the potential additional clinical benefit of durvalumab added to SoC and olaparib in the first line treatment of tBRCAm patients
- ORR - in tBRCAm patients [ Time Frame: Approximately 4 years ]To assess the potential additional clinical benefit of durvalumab added to SoC and olaparib in the first line treatment of tBRCAm patients
- ORR pre-surgery in IDS group - in tBRCAm patients [ Time Frame: Approximately 4 years ]To assess the potential additional clinical benefit of durvalumab added to SoC and olaparib in the first line treatment of tBRCAm patients
- Duration of response (DoR) - in tBRCAm patients [ Time Frame: Approximately 4 years ]To assess the potential additional clinical benefit of durvalumab added to SoC and olaparib in the first line treatment of tBRCAm patients
- Time to first subsequent therapy (TFST) - in tBRCAm patients [ Time Frame: Approximately 7 years ]To assess the potential additional clinical benefit of durvalumab added to SoC and olaparib in the first line treatment of tBRCAm patients
- Time to second subsequent therapy (TSST) - in tBRCAm patients [ Time Frame: Approximately 7 years ]To assess the potential additional clinical benefit of durvalumab added to SoC and olaparib in the first line treatment of tBRCAm patients
- Time to discontinuation or death (TDT) - in tBRCAm patients [ Time Frame: Approximately 4 years ]To assess the potential additional clinical benefit of durvalumab added to SoC and olaparib in the first line treatment of tBRCAm patients
- Health-related quality of life - in tBRCAm patients [ Time Frame: Approximately 4 years ]Change from baseline in the physical functioning subscale of the EORTC-QLQ-C30
- Proportion of patients with pCR in patients undergoing IDS - in tBRCAm patients [ Time Frame: Approximately 4 years ]To assess the potential additional clinical benefit of durvalumab added to SoC and olaparib in the first line treatment of tBRCAm patients
- Safety and tolerability of drugs by assessment of AEs/SAEs [ Time Frame: Approximately 4 years ]Graded according to the National Cancer Institute (NCI CTCAE)

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 to 130 Years (Adult, Older Adult) |
Sexes Eligible for Study: | Female |
Gender Based Eligibility: | Yes |
Gender Eligibility Description: | All female patients newly diagnosed with advanced ovarian cancer |
Accepts Healthy Volunteers: | No |
Key Inclusion Criteria:
Female patients with newly diagnosed, histologically confirmed, advanced (Stage III-IV) high grade epithelial ovarian cancer including high grade serious, high grade endometriod, clear cell ovarian cancer or carcinosarcoma, primary peritoneal cancer and / or fallopian-tube cancer
- Patients must be aged ≥18 years of age. For patients enrolled in Japan that are aged <20 year
- All patients should be candidates for cytoreductive surgery either: upfront primary surgery OR plan to undergo chemotherapy with interval debulking surgery
- Evidence of presence or absence of BRCA1/2 mutation in tumour tissue
- Mandatory provision of tumour sample for centralised tBRCA testing
- ECOG performance status 0-1
- Patients must have preserved organ and bone marrow function
- Postmenopausal or evidence of non-childbearing status for women of childbearing potential: negative urine or serum pregnancy test
Key Exclusion Criteria:
Non-epithelial ovarian cancer, borderline tumors, low grade epithelial tumors or mucinous histology
- Prior systemic anti-cancer therapy for ovarian cancer
- Inability to determine the presence or absence of a deleterious or suspected deleterious BRCA mutation
- Prior treatment with PARP inhibitor or immune mediated therapy
- Planned intraperitoneal cytotoxic chemotherapy
- Active or prior documented autoimmune or inflammatory disorders
- Patients considered a poor medical risk due to a serious, uncontrolled intercurrent illness
- Clinically significant cardiovascular disease
- Patients with known brain metastases
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History of another primary malignancy except for:
- Malignancy treated with curative intent and with no known active disease ≥5 years before the first dose of study treatment and of low potential risk for recurrence (patients who have received prior adjuvant chemotherapy for early stage breast cancer may be eligible, provided that it was completed ≥3 years prior to registration, and that the patient remains free of recurrent or metastatic disease)
- Adequately treated non-melanoma skin cancer or lentigo maligna without evidence of disease
- Adequately treated carcinoma in situ without evidence of disease
- Endometrial cancer FIGO Stage IA, Grade 1 or Grade 2
- Persistent toxicities CTCAE Grade >2 caused by previous cancer therapy
- Patients with a known hypersensitivity to olaparib, durvalumab or any of the excipients of these products and to the combination/comparator agents
- Breast feeding women

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): NCT03737643

Principal Investigator: | Philipp Harter | European Network of Gynaecological Oncological Trial Groups (ENGOT) | |
Principal Investigator: | Carol Aghajanian | GOG |
Responsible Party: | AstraZeneca |
ClinicalTrials.gov Identifier: | NCT03737643 |
Other Study ID Numbers: |
D081RC00001 2017-004632-11 ( EudraCT Number ) |
First Posted: | November 9, 2018 Key Record Dates |
Last Update Posted: | April 21, 2023 |
Last Verified: | April 2023 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | Yes |
Plan Description: | Qualified researchers can request access to anonymized individual patient-level data from AstraZeneca group of companies sponsored clinical trials via the request portal. All request will be evaluated as per the AZ disclosure commitment: https://astrazenecagrouptrials.pharmacm.com/ST/Submission/Disclosure. |
Supporting Materials: |
Study Protocol Statistical Analysis Plan (SAP) |
Time Frame: | AstraZeneca will meet or exceed data availability as per the commitments made to the EFPIA Pharma Data Sharing Principles. For details of our timelines, please rerefer to our disclosure commitment at https://astrazenecagrouptrials.pharmacm.com/ST/Submission/Disclosure. |
Access Criteria: | When a request has been approved AstraZeneca will provide access to the de-identified individual patient-level data in an approved sponsored tool . Signed Data Sharing Agreement (non-negotiable contract for data accessors) must be in place before accessing requested information. Additionally, all users will need to accept the terms and conditions of the SAS MSE to gain access. For additional details, please review the Disclosure Statements at https://astrazenecagrouptrials.pharmacm.com/ST/Submission/Disclosure. |
URL: | https://astrazenecagroup-dt.pharmacm.com/DT/Home |
Studies a U.S. FDA-regulated Drug Product: | Yes |
Studies a U.S. FDA-regulated Device Product: | No |
Product Manufactured in and Exported from the U.S.: | Yes |
Advanced Ovarian Cancer Ovarian neoplasms |
Ovarian Neoplasms Carcinoma, Ovarian Epithelial Endocrine Gland Neoplasms Neoplasms by Site Neoplasms Ovarian Diseases Adnexal Diseases Genital Diseases, Female Female Urogenital Diseases Female Urogenital Diseases and Pregnancy Complications Urogenital Diseases Genital Neoplasms, Female Urogenital Neoplasms Genital Diseases Endocrine System Diseases |
Gonadal Disorders Carcinoma Neoplasms, Glandular and Epithelial Neoplasms by Histologic Type Paclitaxel Bevacizumab Carboplatin Durvalumab Olaparib Antibodies, Monoclonal Antineoplastic Agents, Phytogenic Antineoplastic Agents Tubulin Modulators Antimitotic Agents Mitosis Modulators |