Chemoradiotherapy With or Without Atezolizumab in Treating Patients With Localized Muscle Invasive Bladder Cancer

Running, not enrolling · Phase 3

Conditions studied: Bladder Urothelial Carcinoma, Muscle Invasive Bladder Carcinoma, Stage II Bladder Cancer AJCC v8, Stage IIIA Bladder Cancer AJCC v8

In brief

This phase III trial studies how well chemotherapy and radiation therapy work with or without atezolizumab in treating patients with localized muscle invasive bladder cancer. Radiation therapy uses high energy rays to kill tumor cells and shrink tumors. Chemotherapy drugs, such as gemcitabine, cisplatin, fluorouracil and mitomycin-C, work in different ways to stop the growth of cancer cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. Giving chemotherapy with radiation therapy may kill more tumor cells. Immunotherapy with monoclonal antibodies, such as atezolizumab, may help the body's immune system attack the cancer, and may interfere with the ability of tumor cells to grow and spread. Giving atezolizumab with radiation therapy and chemotherapy may work better in treating patients with localized muscle invasive bladder cancer compared to radiation therapy and chemotherapy without atezolizumab.

Key facts

Study ID

NCT03775265

Run by

National Cancer Institute (NCI)

People needed

475

Starts

2019-06-03

Expected to finish

2027-06-01

Last updated by the study team

2026-08-04

Who can join

Age: 18 and older. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• STEP 1 REGISTRATION: If this will be the first patient from a registering site to receive a given RT modality (3DCRT vs. IMRT), the site must first submit pre-RT planning documents within 3 days of Step 1 registration and receive approval from Imaging and Radiation Oncology Core (IROC) before randomizing the patient to Step 2. If this will not be the first patient to receive a specific RT modality, the patient should be immediately randomized to Step 2 on the same day.
• STEP 2 RANDOMIZATION: If patient required review of pre-RT planning, randomization must occur within 14 days of initial registration.
• Patients must have histologically proven, T2-T4a N0M0 urothelial carcinoma of the bladder within 120 days prior to randomization and no intervening treatment between the histologic proof and randomization. Patients with mixed urothelial carcinoma will be eligible for the trial, but the presence of small cell carcinoma will make a patient ineligible. Patients with lymph nodes >= 1.0 cm in shortest cross-sectional diameter on imaging (computed tomography [CT]/magnetic resonance imaging [MRI] of abdomen and pelvis) must have a biopsy of the enlarged lymph node showing no tumor involvement within 70 days prior to randomization. These patients may be suitable for neoadjuvant chemotherapy and radical cystectomy and are eligible for this trial if they seek out a bladder sparing treatment strategy, however patients who have received prior systemic chemotherapy for bladder cancer are not eligible for the trial.
• Patients must undergo a transurethral resection of bladder tumor (TURBT) within 70 days prior to randomization. In a situation where a patient is referred from outside to the enrolling institution, patient must have a repeat office cystoscopy by the urologist who will be following the patient on the clinical trial to assess the adequacy of the prior TURBT. This cystoscopy can be performed in urologist office without general anesthesia. Patient may then undergo repeat TURBT if deemed necessary as standard of care by the treating urologist. Patients may have either completely or partially resected tumors as long as the treating urologist attempted maximal resection. Patient must not have T4b disease
• Patients must undergo radiological staging within 70 days prior to randomization. Imaging of chest, abdomen, and pelvis must be performed using CT or MRI. Patients must not have evidence of T4bN1-3 disease. Eligibility is based on the local radiology report.
• Patients with hydronephrosis are eligible if they have unilateral hydronephrosis and kidney function meets criteria specified.
• Patients must not have had urothelial carcinoma or histological variant at any site outside of the urinary bladder within the previous 24 months except Ta/T1/carcinoma in situ (CIS) of the upper urinary tract including renal pelvis and ureter if the patient had undergone complete nephroureterectomy.
• Patients must not have diffuse CIS based on cystoscopy and biopsy.
• Patient must be planning to receive one of the protocol specified chemotherapy regimens.
• All adverse events associated with any prior surgery and intravesical therapy must have resolved to Common Terminology Criteria for Adverse Events (CTCAE) grade =< 2 prior to randomization.
• Patient must not have received any systemic chemotherapy for their bladder cancer.
• Patient must not have had prior pelvic radiation.
• Patients must not have received prior treatment for muscle invasive bladder cancer including neoadjuvant chemotherapy for the current tumor.
• Patients must not have received any systemic therapy (including, but not limited to, interferon alfa-2b, high dose IL-2, pegylated interferon [PEG-IFN], anti-PD-1, anti-PD-L1), for non-muscle invasive bladder cancer. Prior intravesical bacillus Calmette-Guerin (BCG), interferon, and intravesical chemotherapy are allowed.
• Patients must not have received any of the following prohibited therapies within 28 days prior to randomization or be planning to receive any of the following prohibited therapies during protocol treatment:
• Anti-cancer systemic chemotherapy or biological therapy not specified in the protocol.
• Immunotherapy not specified in this protocol.
• Systemic or intravesical use of any non-study anti-cancer agent (investigational or non-investigational).
• Investigational agents other than atezolizumab.
• Live vaccines: Examples of live vaccines include, but are not limited to, the following: measles, mumps, rubella, chicken pox, shingles, yellow fever, rabies, BCG, and typhoid (oral) vaccine. Seasonal influenza vaccines for injection are generally killed virus vaccines and are allowed; however, intranasal influenza vaccines (e.g. Flu-Mist®) are live attenuated vaccines, and are not allowed. Prior administration of intravesical BCG is allowed.
• Glucocorticoids for any purpose other than to modulate symptoms from an event of suspected immunologic etiology. The use of physiologic doses of corticosteroids (defined as 10 mg prednisone) are acceptable, however site investigators should consult with the study chair for any dose higher than 10 mg prednisone. Dexamethasone 4 mg IV with chemotherapy to prevent nausea is allowed.
• RANKL infusion: Concurrent denosumab (which binds the cytokine RANKL) for any known indication is prohibited due to interaction with study medication.
• Patients must not have a major surgical procedure within 28 days prior to randomization. If patient had any surgical procedure then they should have recovered to full presurgical performance status and surgical adverse events should have resolved to grade =< 2. TURBT is not considered a major surgical procedure.
• Patients must not have received treatment with systemic immunosuppressive medications (including, but not limited to, prednisone, cyclophosphamide, azathioprine, methotrexate, thalidomide, and anti-tumor necrosis factor [anti-TNF] agents) within 14 days prior to randomization. Exceptions:
• Patients may have received acute, low dose, systemic immunosuppressant medications (e.g., a one-time dose of dexamethasone for nausea).

Where it is running

• Mayo Clinic in Arizona — Scottsdale, Arizona, United States
• Banner University Medical Center - Tucson — Tucson, Arizona, United States
• University of Arizona Cancer Center-North Campus — Tucson, Arizona, United States
• Sutter Auburn Faith Hospital — Auburn, California, United States
• Sutter Cancer Centers Radiation Oncology Services-Auburn — Auburn, California, United States
• Alta Bates Summit Medical Center-Herrick Campus — Berkeley, California, United States
• Mercy Cancer Center - Carmichael — Carmichael, California, United States
• Mercy San Juan Medical Center — Carmichael, California, United States
• Mercy Cancer Center - Elk Grove — Elk Grove, California, United States
• UC San Diego Moores Cancer Center — La Jolla, California, United States
• Los Angeles General Medical Center — Los Angeles, California, United States
• USC / Norris Comprehensive Cancer Center — Los Angeles, California, United States
• Cedars-Sinai Medical Center — Los Angeles, California, United States
• Fremont - Rideout Cancer Center — Marysville, California, United States
• Memorial Medical Center — Modesto, California, United States
• UC Irvine Health/Chao Family Comprehensive Cancer Center — Orange, California, United States
• Palo Alto Medical Foundation Health Care — Palo Alto, California, United States
• Mercy Cancer Center - Rocklin — Rocklin, California, United States
• Sutter Cancer Centers Radiation Oncology Services-Roseville — Roseville, California, United States
• Sutter Roseville Medical Center — Roseville, California, United States
• Mercy Cancer Center - Sacramento — Sacramento, California, United States
• Sutter Medical Center Sacramento — Sacramento, California, United States
• University of California Davis Comprehensive Cancer Center — Sacramento, California, United States
• Pacific Central Coast Health Center-San Luis Obispo — San Luis Obispo, California, United States
• Mayo Clinic Hospital in Arizona — Phoenix, Arizona, United States

Full record on ClinicalTrials.gov

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