Testing the Addition of an Anti-Cancer Immunotherapy Drug, Avelumab, to Gemcitabine and Carboplatin Chemotherapy Prior to Surgery in Muscle Invasive Urinary Tract Cancer vs. Surgery Alone in Patients Who Are Not Able to Receive Cisplatin Therapy (SWOG GAP TRIAL)

Stage II Bladder Cancer AJCC v8 Clinical Trial

Official title: Randomized Phase II Trial of Gemcitabine, Avelumab and Carboplatin vs. No Neoadjuvant Therapy Preceding Surgery for Cisplatin-Ineligible Muscle-Invasive Urothelial Carcinoma: SWOG GAP TRIAL

Status Suspended

Clinical Trial Summary

This phase II trial studies the effect of avelumab, gemcitabine and carboplatin before surgery compared with surgery alone in treating patients with muscle invasive bladder or upper urinary tract cancer who are not able to receive cisplatin therapy. Immunotherapy with monoclonal antibodies, such as avelumab, may help the body's immune system attack the cancer, and may interfere with the ability of tumor cells to grow and spread. Chemotherapy drugs, such as gemcitabine and carboplatin, work in different ways to stop the growth of tumor cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. Giving avelumab together with gemcitabine and carboplatin before surgery may work better in lowering the chance of muscle invasive urinary tract cancer growing or spreading, in patients who cannot receive cisplatin therapy compared to surgery alone.

Clinical Trial Description

PRIMARY OBJECTIVE:

I. To compare pathologic complete response (pCR, pT0N0) with avelumab plus gemcitabine and carboplatin (AGCa) versus (vs.) no neoadjuvant therapy preceding protocol surgery for muscle-invasive bladder cancer or upper tract urothelial carcinoma (MIBC/UTUC) for participants who are ineligible for cisplatin-based chemotherapy.

SECONDARY OBJECTIVES:

I. To evaluate toxicities with AGCa, and to compare resectability rates and surgical complications by arm in this population.

II. To compare event-free survival (EFS) with AGCa versus no neoadjuvant therapy in this population.

III. To compare overall survival (OS) with AGCa versus no neoadjuvant therapy preceding surgery in this population.

IV. To compare pathologic complete response (pCR, pT0N0) with avelumab plus gemcitabine and carboplatin (AGCa) vs. no neoadjuvant therapy preceding protocol surgery in the subset of participants who received at least 2 cycles of neoadjuvant therapy in Arm A.

BANKING OBJECTIVE:

I. To bank tumor tissue, blood, and urine for future correlative genomic, transcriptomic, and proteomic studies to discover molecular signatures associated with pCR and resistance.

OUTLINE: Patients are randomized to 1 of 2 arms.

ARM A: Patients receive avelumab intravenously (IV) over 60 minutes on day 1. Treatment repeats every 14 days for up to 6 cycles in the absence of disease progression or unacceptable toxicity. Patients also receive gemcitabine hydrochloride IV over 30 minutes on days 1 and 8 and carboplatin IV over 30 minutes on day 1. Treatment repeats every 21 days for up 4 in the absence of disease progression or unacceptable toxicity. Within 4-8 weeks after final systemic therapy, patients undergo standard of care surgery.

ARM B: Patients undergo standard of care surgery.

After completion of study treatment, patients are followed up every 12 weeks for years 1-2, every 6 months for year 3, then annually in years 4-5. ;

Related Conditions & MeSH terms

• Bladder Carcinoma Infiltrating the Muscle of the Bladder Wall
• Carcinoma
• Carcinoma, Transitional Cell
• Stage II Bladder Cancer AJCC v8
• Urinary Bladder Neoplasms

• NCT number: NCT04871529
• Study type: Interventional
• Source: SWOG Cancer Research Network
• Status: Suspended
• Phase: Phase 2
• Start date: August 10, 2022
• Completion date: April 30, 2029