KEYNOTE-057 Cohort C
The primary study hypothesis is that treatment with pembrolizumab will result in a clinically meaningful response.
- Histologically-confirmed diagnosis of high risk non-muscle-invasive (T1, high grade Ta and / or carcinoma in situ [CIS]) transitional cell carcinoma of the bladder (mixed histology tumors allowed if transitional cell histology is predominant histology).
- Fully resected disease at study entry (residual CIS acceptable)
- BCG-unresponsive high risk non-muscle-invasive bladder cancer after treatment with adequate BCG therapy.
- Ineligible for radical cystectomy or refusal of radical cystectomy
- Available tissue from a newly obtained core biopsy of a tumor lesion not previously irradiated.
- Centrally assessed muscle-invasive, locally advanced nonresectable, or metastatic urothelial carcinoma (i.e., T2, T3, T4, and / or stage IV)
- Centrally assessed concurrent extra-vesical (i.e., urethra, ureter, or renal pelvis) non-muscle invasive transitional cell carcinoma of the urothelium
- Received intervening intravesical chemotherapy or immunotherapy from the time of most recent cystoscopy / Transurethral Resection of Bladder Tumor (TURBT) to starting study treatment
- Received prior chemotherapy, targeted small molecule therapy, or radiation therapy within 2 weeks prior to starting study treatment or not recovered from adverse events due to a previously administered agent
- Active autoimmune disease that has required systemic treatment in the past 2 years
- Evidence of interstitial lung disease or active non-infectious pneumonitis
- Prior therapy with an anti-programmed cell death 1 (PD-1), anti-PD-ligand 2 (L2) agent, or with an agent directed to another co-inhibitory T-cell receptor
A Phase II Clinical Trial to Study the Efficacy and Safety of Pembrolizumab (MK-3475) and Pembrolizumab in Combination With Other Investigational Agents in Subjects With High Risk Non-muscle-Invasive Bladder Cancer (NMIBC) Unresponsive to Bacillus Calmette-Guerin (BCG) Therapy.
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