Transurethral Resection of Bladder Tumor

This phase I trial evaluates the effects of bicalutamide, compared to no study drug (NSD), on epidermal growth factor receptor (EGFR) protein expression in patients with non-muscle invasive bladder cancer. Bicalutamide is in a class of medications called androgen receptor inhibitors. It works by blocking the effects of androgen (a male reproductive hormone) to stop the growth and spread of tumor cells. Previous studies have suggested that expression of a protein called EGFR on tumor cells is related to bladder cancer disease progression. This trial may help doctors evaluate if bicalutamide has any effect on EGFR expression in patients with non-muscle invasive bladder cancer.

This phase II trial tests the effect of giving pembrolizumab in combination with radiation therapy after chemotherapy in preventing surgery to remove the bladder in patients with muscle invasive bladder cancer. Standard of care therapy includes chemotherapy before surgery (neoadjuvant) to shrink or get rid of the tumor. Immunotherapy with monoclonal antibodies, such as pembrolizumab, may help the body's immune system attack the tumor, and may interfere with the ability of tumor cells to grow and spread. Radiation therapy uses high energy x-rays, particles, or radioactive seeds to kill cancer cells and shrink tumors. Photon beam radiation therapy is a type of radiation therapy that uses x-rays or gamma rays that come from a special machine called a linear accelerator. The radiation dose is delivered at the surface of the body and goes into the tumor and through the body. Giving pembrolizumab in combination with radiation therapy after neoadjuvant chemotherapy may help prevent surgical removal of the bladder in patients with muscle invasive bladder cancer.

This phase III trial compares the effect of adding gemcitabine to intravesical Bacillus Calmette Guerin (BCG) versus intravesical BCG alone in patients with non-muscle invasive bladder cancer that has come back after a period of improvement (recurrent). Gemcitabine is a chemotherapy drug that blocks the cells from making deoxyribonucleic acid (DNA) and may kill cancer cells. Intravesical BCG is a solution containing the live BCG bacteria that is placed in the bladder via a catheter (intravesical). When the solution comes into direct contact with the bladder wall, it stimulates the body's immune system which kills tumor cells. Giving gemcitabine with intravesical BCG may kill more tumor cells in patients with recurrent non-muscle invasive bladder cancer.