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

Status
Active, not recruiting
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03459846
Acronym
BAYOU
Enrollment
154
Registered
2018-03-09
Start date
2018-03-16
Completion date
2026-12-31
Last updated
2026-08-05

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Urinary Bladder Neoplasms

Keywords

Urinary Bladder Neoplasms

Brief summary

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

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).

Interventions

DRUGDurvalumab

Durvalumab 1500 mg IV q4w

DRUGOlaparib

Olaparib PO 300 mg BID adjusted based on patient's creatinine clearance.

DRUGPlacebo

Matching placebo for oral tablet BID

Sponsors

AstraZeneca
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Years to 130 Years
Healthy volunteers
No

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.

Design outcomes

Primary

MeasureTime frameDescription
Progression-free Survival (PFS)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 monthsProgression-free survival based on investigator assessments according to RECIST 1.1

Secondary

MeasureTime frameDescription
Overall Survival (OS)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 monthsNumber of Participants with Overall Survival (OS), where OS was defined as the time from the date of randomization until death due to any cause.
Objective Response Rate (ORR)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 monthsORR (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
Duration of Response (DoR)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 monthsPer 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

Countries

Canada, Russia, South Korea, Spain, Taiwan, United States, Vietnam

Contacts

PRINCIPAL_INVESTIGATORJonathan Rosenberg, MD

Memorial Sloan Kettering Cancer Center

STUDY_DIRECTORMark Lanasa, MD

One MedImmune Way,Gaithersburg,Maryland,United States

Participant flow

Participants by arm

ArmCount
Durva + Olaparib
Patients received a combination of durvalumab 1500mg intravenous (IV) every 4 weeks (q4w) with olaparib 300mg orally (PO) twice daily (BID) adjusted based on patient's creatinine clearance
78
Durva + Placebo
Patients received durvalumab 1500mg IV q4w and placebo PO BID
76
Total154

Baseline characteristics

CharacteristicDurva + PlaceboTotalDurva + Olaparib
Age, Continuous70.2 Years
STANDARD_DEVIATION 10.26
71.9 Years
STANDARD_DEVIATION 10.62
73.4 Years
STANDARD_DEVIATION 10.8
Race/Ethnicity, Customized
Hispanic or Latino
3 Participants6 Participants3 Participants
Race/Ethnicity, Customized
Not Hispanic or Latino
73 Participants148 Participants75 Participants
Sex: Female, Male
Female
21 Participants43 Participants22 Participants
Sex: Female, Male
Male
55 Participants111 Participants56 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
52 / 7846 / 76
other
Total, other adverse events
65 / 7663 / 76
serious
Total, serious adverse events
37 / 7626 / 76

Outcome results

Primary

Progression-free Survival (PFS)

Progression-free survival based on investigator assessments according to RECIST 1.1

Time frame: 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

Population: Full analysis set

ArmMeasureValue (MEDIAN)
Durva + OlaparibProgression-free Survival (PFS)4.2 Months
Durva + PlaceboProgression-free Survival (PFS)3.5 Months
p-value: 0.78995% CI: [0.641, 1.387]Regression, Cox
Secondary

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

Time frame: 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

Population: Duration of Response (DoR) was calculated for all responders (N=36)

ArmMeasureValue (MEDIAN)
Durva + OlaparibDuration of Response (DoR)8.9 Months
Durva + PlaceboDuration of Response (DoR)14.8 Months
Secondary

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

Time frame: 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

Population: Full analysis set

ArmMeasureCategoryValue (COUNT_OF_PARTICIPANTS)
Durva + OlaparibObjective Response Rate (ORR)Response22 Participants
Durva + OlaparibObjective Response Rate (ORR)No Response56 Participants
Durva + PlaceboObjective Response Rate (ORR)Response14 Participants
Durva + PlaceboObjective Response Rate (ORR)No Response62 Participants
p-value: 0.14295% CI: [0.821, 3.778]Regression, Logistic
Secondary

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.

Time frame: 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

Population: Full analysis set

ArmMeasureCategoryValue (COUNT_OF_PARTICIPANTS)
Durva + OlaparibOverall Survival (OS)Died52 Participants
Durva + OlaparibOverall Survival (OS)Censored (includes subjects with unknown survival status or subjects who were lost to follow up)26 Participants
Durva + PlaceboOverall Survival (OS)Died46 Participants
Durva + PlaceboOverall Survival (OS)Censored (includes subjects with unknown survival status or subjects who were lost to follow up)30 Participants
p-value: 0.72895% CI: [0.719, 1.606]Regression, Cox

Source: ClinicalTrials.gov · Data processed: Aug 6, 2026