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Active, not recruiting Phase 1Phase 2 Interventional

Testing the Addition of Tazemetostat to the Immunotherapy Drug, Pembrolizumab (MK-3475), in Advanced Urothelial Carcinoma

ClinicalTrials.gov ID: NCT03854474

Public ClinicalTrials.gov record NCT03854474. 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 29, 2026, 11:45 AM 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 Pilot Study of Tazemetostat and Pembrolizumab (MK-3475) in Advanced Urothelial Carcinoma

Brief summary

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

This phase I/II trial studies the side effects and best dose of tazemetostat and how well it works when given together with pembrolizumab in treating patients with urothelial carcinoma that has spread to nearby tissue or lymph nodes (locally advanced ) or from where it first started (primary site) to other places in the body (metastatic). Tazemetostat may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth. Immunotherapy with monoclonal antibodies, such as pembrolizumab, may help the body's immune system attack the cancer, and may interfere with the ability of tumor cells to grow and spread. Giving tazemetostat and pembrolizumab may work better in treating patients with urothelial carcinoma compared to pembrolizumab without tazemetostat.

Study identification

NCT ID
NCT03854474
Recruitment status
Active, not recruiting
Study type
Interventional
Phase
Phase 1, Phase 2
Enrollment
30 participants

Conditions and interventions

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
Nov 18, 2019 (Actual)
Primary completion
Jun 30, 2027 (Estimated)
Completion
Jun 30, 2027 (Estimated)
Last update posted
Jul 31, 2026

2019 – 2027

United States locations

U.S. sites
33
U.S. states
10
U.S. cities
31
Facility City State ZIP Site status
Mayo Clinic Hospital in Arizona Phoenix Arizona 85054 —
Mayo Clinic in Arizona Scottsdale Arizona 85259 —
Smilow Cancer Hospital-Derby Care Center Derby Connecticut 06418 —
Smilow Cancer Hospital Care Center-Fairfield Fairfield Connecticut 06824 —
Smilow Cancer Hospital Care Center - Guilford Guilford Connecticut 06437 —
Smilow Cancer Hospital Care Center at Saint Francis Hartford Connecticut 06105 —
Smilow Cancer Center/Yale-New Haven Hospital New Haven Connecticut 06510 —
Yale University New Haven Connecticut 06520 —
Yale-New Haven Hospital North Haven Medical Center North Haven Connecticut 06473 —
Smilow Cancer Hospital-Orange Care Center Orange Connecticut 06477 —
Smilow Cancer Hospital-Torrington Care Center Torrington Connecticut 06790 —
Smilow Cancer Hospital Care Center-Trumbull Trumbull Connecticut 06611 —
Smilow Cancer Hospital-Waterbury Care Center Waterbury Connecticut 06708 —
Smilow Cancer Hospital Care Center - Waterford Waterford Connecticut 06385 —
Mayo Clinic in Florida Jacksonville Florida 32224-9980 —
Northwestern University Chicago Illinois 60611 —
University of Kansas Clinical Research Center Fairway Kansas 66205 —
HaysMed Hays Kansas 67601 —
Lawrence Memorial Hospital Lawrence Kansas 66044 —
The University of Kansas Cancer Center - Olathe Olathe Kansas 66061 —
University of Kansas Cancer Center-Overland Park Overland Park Kansas 66210 —
Mercy Hospital Pittsburg Pittsburg Kansas 66762 —
Salina Regional Health Center Salina Kansas 67401 —
University of Kansas Health System Saint Francis Campus Topeka Kansas 66606 —
University of Kansas Hospital-Westwood Cancer Center Westwood Kansas 66205 —
University of Kentucky/Markey Cancer Center Lexington Kentucky 40536 —
Mayo Clinic in Rochester Rochester Minnesota 55905 —
University Health Truman Medical Center Kansas City Missouri 64108 —
University of Kansas Cancer Center - North Kansas City Missouri 64154 —
University of Kansas Cancer Center - Lee's Summit Lee's Summit Missouri 64064 —
University of Kansas Cancer Center at North Kansas City Hospital North Kansas City Missouri 64116 —
Dartmouth Hitchcock Medical Center/Dartmouth Cancer Center Lebanon New Hampshire 03756 —
UPMC Hillman Cancer Center Pittsburgh Pennsylvania 15232 —

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 1 non-U.S. site.

About this trial record page

What this page shows
Public field values for ClinicalTrials.gov record NCT03854474, 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 Jul 31, 2026 · Synced Oct 29, 2026

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Open the official record

The complete public registry record, listed eligibility criteria, and available contact information for NCT03854474 live on ClinicalTrials.gov.

View official ClinicalTrials.gov record →