Bladder/Urothelial Cancer A031701 (GU)

A Phase II Study of Dose-Dense Gemcitabine Plus Cisplatin (ddGC) in Patients With Muscle-Invasive Bladder Cancer With Bladder Preservation for Those Patients Whose Tumors Harbor Deleterious DNA Damage Response (DDR) Gene Alterations

This phase II trial studies how well gemcitabine hydrochloride and cisplatin work in treating participants with invasive bladder urothelial cancer. Drugs used in chemotherapy, such as gemcitabine hydrochloride and cisplatin, 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.

Eligibility Criteria:

• Step 1 Patient Registration Eligibility Criteria
• Histologically confirmed muscle-invasive urothelial carcinoma of the bladder. Urothelial carcinoma invading into the prostatic stroma with no histologic muscle invasion is allowed, provided the extent of disease is confirmed via imaging and/or examination under anesthesia (EUA). The diagnostic TURBT sample must have been obtained within 60 days prior to registration
• 20 unstained slides (10 micron thickness) of formalin-fixed paraffin-embedded (FFPE) pre-treatment diagnostic transurethral resection (TUR) specimen available (for sequencing), with 2 (5 micron) slides at the start and end of the 20 slides, for a total of 22 unstained slides. An FFPE block is also acceptable
• Clinical stage T2-T4aN0/xM0 disease
• Medically appropriate candidate for radical cystectomy as assessed by surgeon

Available at: Hartford Hospital, Hospital of Central Connecticut, MidState Medical Center and William Backus Hospital