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Assessment of Efficacy and Safety of Durvalumab Plus BCG Compared to the Standard Therapy With BCG in Non-muscle Invasive Bladder Cancer

A Phase III Randomized, Open-Label, Multi-Center, Global Study of Durvalumab and Bacillus Calmette-Guerin (BCG) Administered as Combination Therapy Versus BCG Alone in High-Risk, BCG Naïve Non-Muscle Invasive Bladder Cancer Patients

Status
Active, not recruiting
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03528694
Acronym
POTOMAC
Enrollment
1018
Registered
2018-05-18
Start date
2018-05-14
Completion date
2028-10-03
Last updated
2025-11-25

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

Conditions

Non-muscle-invasive Bladder Cancer

Keywords

Durvalumab, BCG, MEDI4736, NMIBC, PD-L1, DFS, OS

Brief summary

This is a randomized, open-label, multi-center, global, phase III study to determine the efficacy and safety of Durvalumab + BCG combination therapy in the treatment of patients with non-muscle-invasive bladder cancer

Detailed description

Patients will be randomized in a 1:1:1 ratio to receive treatment with Durvalumab + BCG combination therapies, or Standard of Care (SoC) therapy.

Interventions

Investigational product

Standard of care

Sponsors

AstraZeneca
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

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

Inclusion criteria

For inclusion in the study, patients should fulfill the following criteria: * Aged at least 18 years * BCG-naïve (patients who have not received prior intravesical BCG or who previously received but stopped BCG more than 3 years before study entry are eligible) * Local histological confirmation (based on pathology report) of high-risk transitional cell carcinoma of the urothelium of the urinary bladder confined to the mucosa or submucosa. A high risk tumor is defined as one of the following * T1 tumor * High grade/ G3 tumor * CIS * Multiple and recurrent and large (with diameter of largest tumor ≥3 cm) tumors (all conditions must be met in this point) * Complete resection of all Ta/T1 papillary disease prior to randomization, with the TURBT removing high-risk NMIBC performed not more than 4 months before randomization in the study. Patients with residual CIS after TURBT are eligible * No prior radiotherapy for bladder cancer * No prior exposure to immune-mediated therapy of cancer including, but not limited to, other anti CTLA-4, anti-PD-1, anti-PD-L1, and anti-programmed cell death ligand 2 antibodies. Patients who have been treated with anticancer vaccines will be excluded

Exclusion criteria

Patients should not enter the study if any of the following

Design outcomes

Primary

MeasureTime frame
The efficacy of Durvalumab + BCG (induction plus maintenance) combination therapy compared to SoC in terms of Disease free survival (DFS) in patients with NMIBCUp to 4 years

Secondary

MeasureTime frameDescription
The efficacy of Durvalumab + BCG (induction plus maintenance) therapy compare to SoC in terms of DFS after 24 months of last subject's last dose of IPUp to 4 years
Disease-related symptoms and HRQoL in patients with NMIBC treated with Durvalumab + BCG combination therapies compared to SoC and compared to each other using the EORTC QLQ-C30 questionnaireUp to 4 yearsEORTC QLQ-C30 measures cancer patients' functioning (HRQoL) and symptoms for all cancer types and consists of functional, symptom and a global measure of health status scales
Patient-reported treatment tolerability using specific PRO CTCAE symptomsUp to 4 years
The serum concentration of Durvalumab plus BCG combination therapiesUp to 4 years
The immunogenicity of Durvalumab when used in combination with BCG treatment assessed by descriptive summary of presence of ADAsUp to 4 yearsSerum will be tested for the presence of anti-drug antibodies.
The efficacy of Durvalumab + BCG (induction plus maintenance) therapy compare to SoC in terms of OSUp to 7 years
The efficacy of Durvalumab + BCG (induction plus maintenance) combination therapy compared to SoC in terms of time to muscle invasive bladder cancer and/or metastatic diseaseUp to 7 years
The efficacy of Durvalumab + BCG combination therapies compared to each other in terms of DFS after 24 months of last subject's last dose of IPUp to 4 years
The efficacy of Durvalumab + BCG (induction only) combination therapy compared to SoC in terms of OSUp to 7 years
The efficacy of Durvalumab + BCG combination therapies compared to each other in terms of OSUp to 7 years
The efficacy of Durvalumab + BCG (induction only) combination therapy compared to SoC in terms of time to muscle invasive bladder cancer and/or metastatic diseaseUp to 7 years
The efficacy of Durvalumab + BCG combination therapies compared to each other in terms of time to muscle invasive bladder cancer and/or metastatic diseaseUp to 7 years
Disease-related symptoms and HRQoL in patients with NMIBC treated with Durvalumab + BCG combination therapies compared to SoC and compared to each other using the the EORTC QLQ NMIBC24 questionnaireUp to 4 yearsEORTC QLQ-NMIBC24 assesses disease-specific symptoms of patients with intermediate to high-risk NMIBC.
The efficacy of durvalumab + BCG combination therapy compared to SoC in terms of CRR for patients with CIS prior to study entry or at baseline cystoscopyUp to 4 yearsCRR at 6 months in patients with CIS prior to the study entry or at baseline cystoscopy
The efficacy of Durvalumab + BCG (induction only) combination therapy compared to SoC in terms of DFS after 24 months of last subject's last dose of IPUp to 4 years

Other

MeasureTime frameDescription
Number of treatment-related adverse events as assessed by CTCAE v4.0 in patients receiving Durvalumab + BCG combination therapies compared to SoCUp to 4 yearsThe safety and tolerability profile of Durvalumab + BCG combination therapies compared to SoC using vital signs, laboratory data, electrocardiograms (ECGs), and adverse event data.

Countries

Australia, Austria, Belgium, Canada, France, Germany, Japan, Netherlands, Poland, Russia, Spain, United Kingdom

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 21, 2026