A Study of Durvalumab Alone and Durvalumab+Olaparib in Advanced, Platinum-Ineligible Bladder Cancer (BAYOU) (BAYOU)

A Phase II, Randomized, Multi-Center, Double-Blind, Comparative Global Study to Determine the Efficacy and Safety of Durvalumab in Combination With Olaparib for First-Line Treatment in Platinum-Ineligible Patients With Unresectable Stage IV Urothelial Cancer

A Phase II, Randomized, Multi-Center, Double-Blind, Comparative Global Study to Determine the Efficacy and Safety of Durvalumab in Combination With Olaparib for First-Line Treatment in Platinum-Ineligible Patients With Unresectable Stage IV Urothelial Cancer

Study Overview

• Status: Active, not recruiting
• Conditions: Urinary Bladder Neoplasms
• Intervention / Treatment: Drug: Durvalumab; Drug: Placebo; Drug: Olaparib

Detailed Description

This is a Phase II, randomized, double-blind, placebo controlled, multi-center, comparative global study to determine the efficacy and safety of durvalumab + olaparib combination therapy versus durvalumab + placebo (durvalumab monotherapy) as first-line treatment in patients ineligible for platinum-based chemotherapy with unresectable Stage IV urothelial cancer (UC).

• Study Type: Interventional
• Enrollment (Actual): 154
• Phase: Phase 2

Contacts and Locations

Study Locations

• Canada
  • Ontario
    • Greater Sudbury, Ontario, Canada, P3E 5J1
      • Research Site
    • Hamilton, Ontario, Canada, L8V 5C2
      • Research Site
    • Newmarket, Ontario, Canada, L3Y 2P9
      • Research Site
    • Toronto, Ontario, Canada, M5G 2M9
      • Research Site
  • Quebec
    • Montreal, Quebec, Canada, H3T 1E2
      • Research Site
• Russia
  • Moscow, Russia, 105077
    • Research Site
  • Moscow, Russia, 125367
    • Research Site
  • Novosibirsk, Russia, 630108
    • Research Site
  • Omsk, Russia, 644013
    • Research Site
  • Saint Petersburg, Russia, 194354
    • Research Site
  • Saint Petersburg, Russia, 199178
    • Research Site
  • Saint Petersburg, Russia, 195271
    • Research Site
• South Korea
  • Incheon, South Korea, 21565
    • Research Site
  • Seoul, South Korea, 02841
    • Research Site
  • Seoul, South Korea, 03722
    • Research Site
  • Seoul, South Korea, 05505
    • Research Site
  • Seoul, South Korea, 6351
    • Research Site
• Spain
  • Barcelona, Spain, 08036
    • Research Site
  • Madrid, Spain, 28041
    • Research Site
  • Madrid, Spain, 08035
    • Research Site
  • Málaga, Spain, 29010
    • Research Site
  • Santiago de Compostela, Spain, 15706
    • Research Site
• Taiwan
  • Kaohsiung City, Taiwan
    • Research Site
  • Kaohsiung City, Taiwan, 807
    • Research Site
  • Taichung, Taiwan, 40705
    • Research Site
  • Tainan, Taiwan, 704
    • Research Site
  • Taipei, Taiwan, 10002
    • Research Site
  • Taipei, Taiwan, 112
    • Research Site
  • Taipei, Taiwan, 104
    • Research Site
  • Taoyuan City, Taiwan, 333
    • Research Site
• United States
  • Alabama
    • Birmingham, Alabama, United States, 35294
      • Research Site
  • Arizona
    • Goodyear, Arizona, United States, 85338
      • Research Site
  • Florida
    • Fort Myers, Florida, United States, 33901
      • Research Site
    • St. Petersburg, Florida, United States, 33705
      • Research Site
    • Tampa, Florida, United States, 33612
      • Research Site
  • Kentucky
    • Louisville, Kentucky, United States, 40202
      • Research Site
  • New York
    • New Hyde Park, New York, United States, 11042
      • Research Site
    • New York, New York, United States, 10065
      • Research Site
    • The Bronx, New York, United States, 10461
      • Research Site
  • Pennsylvania
    • Philadelphia, Pennsylvania, United States, 19124
      • Research Site
  • Tennessee
    • Nashville, Tennessee, United States, 37232
      • Research Site
  • Washington
    • Tacoma, Washington, United States, 98405
      • Research Site
• Vietnam
  • Hanoi, Vietnam, 100000
    • Research Site
  • Ho Chi Minh City, Vietnam, 700000
    • Research Site

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 130 years (Adult, Older Adult)
• Accepts Healthy Volunteers: No

Description

Inclusion criteria:

1. Provision of signed and dated, written ICF
2. Histologically or cytologically documented TCC/UC of the urothelium (including renal pelvis, ureters, urinary bladder, and urethra) also meeting the following: Unresectable, Stage IV disease; No prior systemic therapy for unresectable, Stage IV disease.
3. Ineligible for platinum-based chemotherapy defined as (i) in the opinion of the Investigator, unfit for carboplatin-based chemotherapy and (ii) meeting one of the following criteria: CrCl <60 mL/min calculated by Cockcroft-Gault equation; Common Terminology Criteria for Adverse Events (CTCAE) Grade ≥2 audiometric hearing loss (25 dB in 2 consecutive wave ranges); CTCAE Grade ≥2 peripheral neuropathy; New York Heart Association Class III heart failure; ECOG 2.
4. Known tumor HRR mutation status prior to randomization.
5. World Health Organization (WHO)/ECOG performance status of 0, 1, or 2.
6. Patients with at least 1 RECIST 1.1 target lesion at baseline.
7. Ability to swallow oral medications.
8. Evidence of post-menopausal status, or negative urinary or serum pregnancy test for female pre-menopausal patients.

Exclusion criteria

1. Active or prior documented autoimmune or inflammatory disorders.
2. Other invasive malignancy within 5 years before the first dose of the IP.
3. Major surgical procedure within 28 days prior to the first dose
4. Brain metastases or spinal cord compression unless the patient's condition is stable and off steroid for at least 14 days
5. History of active primary immunodeficiency.
6. Active infection including tuberculosis (TB)
7. History of allogenic organ transplantation.
8. Uncontrolled intercurrent illness
9. Prior exposure to a PARP inhibitor or immune-mediated therapy.
10. Any concurrent chemotherapy, IP, biologic, or hormonal therapy for cancer treatment.
11. Current or prior use of immunosuppressive medication within 14 days before the first dose of the IP.
12. No radiation therapy is allowed, unless it is (1) definitive radiation that had been administered at least 12 months prior; (2) palliative radiation to the brain, with associated criteria for stability or lack of symptoms; or (3) palliative radiation to painful bony lesions (this must comprise less than 30% of the bone marrow) or symptomatic pelvic soft tissue mass(es).
13. Receipt of live attenuated vaccine within 30 days prior to the first dose of the IP.
14. Patients with a known hypersensitivity to durvalumab, olaparib, or any of the excipients of the products.
15. Female patients who are pregnant or breastfeeding or male or female patients of reproductive potential who are not willing to employ effective birth control from screening to 90 days after the last dose of durvalumab and 6 months for participants taking also Olaparib in case of female participants, 90 days after receipt of the last dose of the IP in case of male participants.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: Quadruple

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Arm 1: Durvalumab/Placebo; Durvalumab 1500 mg intravenous (IV) every 4 weeks (q4w) starting on week 1 day 1/Placebo orally (PO) twice a day (BID) starting on week 1 day 1.	Drug: Durvalumab; Durvalumab 1500 mg IV q4w; Drug: Placebo; Matching placebo for oral tablet BID
Experimental: Arm 2: Durvalumab/Olaparib; Durvalumab 1500 mg IV q4w starting on week 1 day 1/Olaparib PO 300 mg BID adjusted based on patient's creatinine clearance.	Drug: Durvalumab; Durvalumab 1500 mg IV q4w; Drug: Olaparib; Olaparib PO 300 mg BID adjusted based on patient's creatinine clearance.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Progression-free Survival (PFS)	Progression-free survival based on investigator assessments according to RECIST 1.1	Assessments performed at baseline and every 8 weeks from date of randomization until date of objective disease progression or death (by any cause in the absence of progression), assessed up to the data cut-off date (15 Oct 2020), up to a max. of 31 months

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Overall Survival (OS)	Number of Participants with Overall Survival (OS), where OS was defined as the time from the date of randomization until death due to any cause.	From the date of randomization until the death due to any cause, assessed up to the data cut-off date (15 October 2020), to a maximum of 31 months
Objective Response Rate (ORR)	ORR (per RECIST 1.1 using Investigator assessments) is defined as the number (%) of patients with at least 1 visit response of complete response (CR) or partial response (PR). CR was defined as the disappearance of all target and non-target lesions; PR was defined as at least a 30% decrease in the sum of the diameters of target lesions, taking as reference the baseline sum of diameters	From the date of randomization to the date of progression or the last evaluable assessment in the absence of progression, assessed up to the data cut-off date (15 October 2020), to a maximum of 31 months
Duration of Response (DoR)	Per Response Evaluation Criteria in Solid Tumours (RECIST v1.1) assessed by MRI or CT: Complete Response (CR): Disappearance of all target and non-target lesions and no new lesions; Partial Response (PR): >= 30% decrease in the sum of diameters of Target Lesions (compared to baseline) and no new lesions. DoR is the time from the date of first documented response until the date of documented progression or death in the absence of disease progression	Tumor assessments every 8 weeks after randomization for the first 48 weeks and then every 12 weeks thereafter until the date of objective disease progression. Assessed up to the data cut-off date (15 October 2020), to a maximum of 31 months

Collaborators and Investigators

• Sponsor: AstraZeneca
• Investigators: Principal Investigator: Jonathan Rosenberg, MD, Memorial Sloan Kettering Cancer Center; Study Director: Mark Lanasa, MD, One MedImmune Way,Gaithersburg,Maryland,United States

Publications and helpful links

General Publications

• Rosenberg JE, Park SH, Kozlov V, Dao TV, Castellano D, Li JR, Mukherjee SD, Howells K, Dry H, Lanasa MC, Stewart R, Bajorin DF. Durvalumab Plus Olaparib in Previously Untreated, Platinum-Ineligible Patients With Metastatic Urothelial Carcinoma: A Multicenter, Randomized, Phase II Trial (BAYOU). J Clin Oncol. 2023 Jan 1;41(1):43-53. doi: 10.1200/JCO.22.00205. Epub 2022 Jun 23.

Helpful Links

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Study record dates

Study Major Dates

• Study Start (Actual): March 16, 2018
• Primary Completion (Actual): October 15, 2020
• Study Completion (Estimated): December 31, 2026

Study Registration Dates

• First Submitted: February 22, 2018
• First Submitted That Met QC Criteria: March 2, 2018
• First Posted (Actual): March 9, 2018

Study Record Updates

• Last Update Posted (Actual): May 11, 2026
• Last Update Submitted That Met QC Criteria: May 7, 2026
• Last Verified: May 1, 2026

More Information

Terms related to this study

• Keywords: Urinary Bladder Neoplasms
• Additional Relevant MeSH Terms: Urogenital Diseases; Urogenital Neoplasms; Neoplasms by Site; Neoplasms; Male Urogenital Diseases; Urologic Diseases; Female Urogenital Diseases; Female Urogenital Diseases and Pregnancy Complications; Urologic Neoplasms; Urinary Bladder Diseases; Urinary Bladder Neoplasms; Antineoplastic Agents, Immunological; Poly(ADP-ribose) Polymerase Inhibitors; Antineoplastic Agents; Molecular Mechanisms of Pharmacological Action; Enzyme Inhibitors; durvalumab; olaparib
• Other Study ID Numbers: D933IC00003; 2017-004556-27 (EudraCT Number)

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: YES

IPD 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. Yes, indicates that AZ are accepting requests for IPD, but this does not mean all requests will be shared.

• IPD Sharing 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.
• IPD Sharing Access Criteria: When a request has been approved AstraZeneca will provide access to the deidentified 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.
• IPD Sharing Supporting Information Type: STUDY_PROTOCOL; SAP

Drug and device information, study documents

• 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.: No