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ClinicalTrials.gov record
Active, not recruiting Phase 3 Interventional

Efficacy and Safety of Pembrolizumab (MK-3475) in Combination With Bacillus Calmette-Guerin (BCG) in High-Risk Non-Muscle Invasive Bladder Cancer (HR NMIBC) (MK-3475-676/KEYNOTE-676)

ClinicalTrials.gov ID: NCT03711032

Public ClinicalTrials.gov record NCT03711032. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.

ClinicalTrials.gov public records Last synced Oct 17, 2026, 5:07 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Official title

A Phase 3, Randomized, Comparator-controlled Clinical Trial to Study the Efficacy and Safety of Pembrolizumab (MK-3475) in Combination With Bacillus Calmette-Guerin (BCG) in Participants With High-risk Non-muscle Invasive Bladder Cancer (HR NMIBC) That is Either Persistent or Recurrent Following BCG Induction or That is Naïve to BCG Treatment (KEYNOTE-676)

Brief summary

Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.

Researchers are looking for new ways to treat high-risk non muscle invasive bladder cancer (HR NMIBC). NMIBC is cancer in the tissue that lines the inside of the bladder but has not spread to the bladder muscle or outside of the bladder. High-risk means NMIBC may have a high chance of getting worse or coming back after treatment. The goals of this study are to learn: 1. If more people who receive pembrolizumab with Bacillus Calmette-Guerin (BCG) have no signs of cancer in their body and live longer without the cancer growing, spreading, or coming back compared to people who receive BCG alone. 2. About the safety and how well people tolerate BCG alone or in combination with pembrolizumab.

Study identification

NCT ID
NCT03711032
Recruitment status
Active, not recruiting
Study type
Interventional
Phase
Phase 3
Lead sponsor
Merck Sharp & Dohme LLC
Industry
Enrollment
1,397 participants

Conditions and interventions

Interventions

Biological

Eligibility (public fields only)

Age range
18 Years and older
Sex
All
Healthy volunteers
Healthy volunteers not accepted

This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.

Study timeline

Start date
Dec 24, 2018 (Actual)
Primary completion
Jul 31, 2026 (Estimated)
Completion
Nov 20, 2034 (Estimated)
Last update posted
May 1, 2026

2018 – 2034

United States locations

U.S. sites
44
U.S. states
20
U.S. cities
42
Facility City State ZIP Site status
Alaska Urological Institute dba Alaska Clinical Research Center ( Site 1083) Anchorage Alaska 99503 —
Mayo Clinic in Arizona - Phoenix ( Site 1094) Phoenix Arizona 85054 —
Del Sol Research Management, LLC ( Site 1096) Tucson Arizona 85715 —
UCLA Hematology/Oncology - Westwood (Building 200 Suite 140)-Department of Urology/Institute of Uro ( Site 1052) Los Angeles California 90095 —
University of California Irvine Medical Center ( Site 1061) Orange California 92868 —
Genesis Research LLC ( Site 1065) Torrance California 90505 —
Colorado Clinical Research ( Site 1100) Lakewood Colorado 80228 —
Urological Research Network ( Site 1106) Hialeah Florida 33016 —
Mayo Clinic in Florida-Urology ( Site 1097) Jacksonville Florida 32224 —
University of Miami Hospital and Clinics, Sylvester Cancer Center ( Site 1056) Miami Florida 33136 —
Woodlands Medical Specialists, PA ( Site 8002) Pensacola Florida 32503 —
Emory School of Medicine ( Site 1076) Atlanta Georgia 30322 —
Advanced Urology ( Site 1092) Roswell Georgia 30076 —
Northwestern Memorial Hospital ( Site 1101) Chicago Illinois 60611 —
Wichita Urology Group ( Site 1086) Wichita Kansas 67226 —
Ochsner LSU Health Shreveport - Regional Urology ( Site 1099) Shreveport Louisiana 71106 —
Henry Ford Hospital ( Site 1062) Detroit Michigan 48202 —
Michigan Institute of Urology ( Site 1077) Troy Michigan 48084 —
Coastal Urology Associates ( Site 1055) Brick New Jersey 08724 —
Morristown Medical Center ( Site 1090) Morristown New Jersey 07960 —
Rutgers Cancer Institute of New Jersey ( Site 1059) New Brunswick New Jersey 08901 —
St. Peter's Hospital Cancer Care Center ( Site 1087) Albany New York 12208 —
R.J. Zuckerberg Cancer Center ( Site 1080) Lake Success New York 11042 —
Veterans Affairs New York Harbor Healthcare System-PCF COE ( Site 1112) New York New York 10010 —
Laura and Isaac Perlmutter Cancer Center at NYU Langone Health ( Site 1074) New York New York 10016 —
Associated Medical Professionals of NY ( Site 1078) Syracuse New York 13210 —
TriState Urologic Services PSC Inc. dba The Urology Group ( Site 1091) Cincinnati Ohio 45212 —
University Hospitals Cleveland Medical Center ( Site 1066) Cleveland Ohio 44106 —
Ohio State University Arthur G James Cancer Hospital & Richard J Solove Research Institute ( Site 1067) Columbus Ohio 43210 —
OHSU Knight Cancer Institute ( Site 1075) Portland Oregon 97210 —
Oregon Urology Institute ( Site 1098) Springfield Oregon 97477 —
MidLantic Urology ( Site 1071) Bala-Cynwyd Pennsylvania 19004 —
Lancaster Urology ( Site 1079) Lancaster Pennsylvania 17604 —
University of Pennsylvania ( Site 1088) Philadelphia Pennsylvania 19104 —
Carolina Urologic Research Center ( Site 1085) Myrtle Beach South Carolina 29572 —
Urology Associates [Nashville, TN] ( Site 1072) Nashville Tennessee 37209 —
Urology Clinics of North Texas, PLLC ( Site 1064) Dallas Texas 75231 —
University Of Texas Southwestern Medical Center ( Site 1053) Dallas Texas 75390 —
Texas Oncology-Fort Worth Cancer Center ( Site 8003) Fort Worth Texas 76104 —
Houston Metro Urology ( Site 1111) Houston Texas 77027 —
Texas Oncology-Plano West ( Site 8001) Plano Texas 75093 —
Urology San Antonio Research ( Site 1108) San Antonio Texas 78229 —
University of Vermont Medical Center ( Site 1057) Burlington Vermont 05401 —
Urology of Virginia ( Site 1070) Virginia Beach Virginia 23462 —

Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.

Non-U.S. locations

This page focuses on the U.S. directory. The official record also lists 165 non-U.S. sites.

About this trial record page

What this page shows
Public field values for ClinicalTrials.gov record NCT03711032, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
What this page does not do
No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
Where the data comes from
Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
Last refresh
Last update posted May 1, 2026 · Synced Oct 17, 2026

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Open the official record

The complete public registry record, listed eligibility criteria, and available contact information for NCT03711032 live on ClinicalTrials.gov.

View official ClinicalTrials.gov record →