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Phase II Single Arm Study of Gemcitabine and Cisplatin Plus Pembrolizumab as Neoadjuvant Therapy Prior to Radical Cystectomy in Patients With Muscle-Invasive Bladder Cancer
The purpose of this study is to evaluate whether adding pembrolizumab (Keytruda) to the combination of gemcitabine and cisplatin will improve shrinkage of the tumor before having a cystectomy, for people with muscle-invasive bladder cancer (MIBC).
Primary Objective To estimate the proportion of patients with pathological downstaging to \<pT2 after neoadjuvant therapy with pembrolizumab in combination with gemcitabine and cisplatin in patients with MIBC Hypothesis: The rate of pathologic downstaging to \<pT2 will improve compared to historical controls Secondary Objectives To estimate the proportion of patients with pT0 after neoadjuvant therapy with pembrolizumab when administered in combination with gemcitabine and cisplatin in patients with MIBC Hypothesis: The rate of pathologic downstaging to pT0 will improve compared to historical controls To estimate event free survival (EFS) Hypothesis: EFS will be improved compared to historical controls To estimate overall survival (OS) Hypothesis: OS will be improved compared to historical controls To estimate the proportion of patients who are alive at 3 years (OS at 3 years) Hypothesis: OS at 3 years will be improved compared to historical controls To characterize the toxicity profile for the combination of pembrolizumab, gemcitabine, and cisplatin Hypothesis: Pembrolizumab, gemcitabine, and cisplatin will be a safe combination with acceptable toxicity rates Exploratory Objectives To explore the association of biological markers including PD-L1 expression and immune gene expression signatures with pathological downstaging to \<pT2, pT0, EFS, and OS To explore associations between BASE47 "basal," "claudin-low," and "luminal" subtypes of MIBC and pathological downstaging to \<pT2, pT0, EFS, and OS To characterize the change in phenotype of TILs, including delineation of effector and regulatory T cells, before and after neoadjuvant treatment To define T cell receptor (TCR) and B cell receptor (BCR) repertoire profiles that are associated with pathological downstaging to \<pT2, pT0, EFS, and OS First the participant will receive all 3 study drugs (Pembrolizumab/Keytruda, gemcitabine and cisplatin) on the first day of a 3 week "cycle". The participant will then receive cisplatin and gemcitabine on the 8th day of the cycle. The participant will receive the study drugs for 4 cycles for a total of 12 weeks. Participants are followed for 5 years.
Age
18 - No limit years
Sex
ALL
Healthy Volunteers
No
North Carolina Cancer Hospital (UNC)
Chapel Hill, North Carolina, United States
Duke University Medical Center
Durham, North Carolina, United States
Start Date
May 1, 2016
Primary Completion Date
July 6, 2020
Completion Date
January 30, 2026
Last Updated
March 20, 2026
39
ACTUAL participants
pembrolizumab, gemcitabine and cisplatin
DRUG
Lead Sponsor
UNC Lineberger Comprehensive Cancer Center
Collaborators
NCT04235764
NCT07061964
Data Source & Attribution
This clinical trial information is sourced from ClinicalTrials.gov, a service of the U.S. National Institutes of Health.
Modifications: This data has been reformatted for display purposes. Eligibility criteria have been parsed into inclusion/exclusion sections. Location data has been geocoded to enable distance-based search. For the authoritative and most current information, please visit ClinicalTrials.gov.
Neither the United States Government nor Clareo Health make any warranties regarding the data. Check ClinicalTrials.gov frequently for updates.
View ClinicalTrials.gov Terms and ConditionsNCT03375307