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Recruiting Phase 3 Interventional

A Study of Dostarlimab vs Placebo After Chemoradiation in Adult Participants With Locally Advanced Unresected Head and Neck Squamous Cell Carcinoma

ClinicalTrials.gov ID: NCT06256588

Public ClinicalTrials.gov record NCT06256588. 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.

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ClinicalTrials.gov public records Last synced Sep 2, 2026, 5:20 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 Randomized, Double-blind, Placebo-controlled Phase 3 Study to Evaluate Dostarlimab as Sequential Therapy After Chemoradiation in Participants With Locally Advanced Unresected Head and Neck Squamous Cell Carcinoma

Brief summary

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

The goal of this study is to assess the safety and effectiveness of Dostarlimab compared to Placebo in adult participants with Head and Neck Squamous Cell Carcinoma (HNSCC)

Study identification

NCT ID
NCT06256588
Recruitment status
Recruiting
Study type
Interventional
Phase
Phase 3
Lead sponsor
GlaxoSmithKline
Industry
Enrollment
864 participants

Conditions and interventions

Interventions

Drug

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
Mar 20, 2024
Primary completion
Jun 29, 2028
Completion
Oct 25, 2029
Last update posted
May 25, 2026

2024 – 2029

United States locations

U.S. sites
36
U.S. states
22
U.S. cities
36
Facility City State ZIP Site status
GSK Investigational Site Jonesboro Arkansas 72401 Recruiting
GSK Investigational Site Los Angeles California 90095 Recruiting
GSK Investigational Site Solvang California 93463 Recruiting
GSK Investigational Site Stockton California 95204 Recruiting
GSK Investigational Site Torrance California 90505 Recruiting
GSK Investigational Site Farmington Connecticut 06030-1628 Recruiting
GSK Investigational Site New Haven Connecticut 06520 Recruiting
GSK Investigational Site Washington D.C. District of Columbia 20010 Recruiting
GSK Investigational Site St. Petersburg Florida 33709 Recruiting
GSK Investigational Site Tamarac Florida 33321 Withdrawn
GSK Investigational Site Atlanta Georgia 30322 Recruiting
GSK Investigational Site Fort Wayne Indiana 46804 Recruiting
GSK Investigational Site Iowa City Iowa 52242 Recruiting
GSK Investigational Site Lexington Kentucky 40536 Recruiting
GSK Investigational Site Columbia Maryland 21044 Recruiting
GSK Investigational Site Worcester Massachusetts 01655-0002 Recruiting
GSK Investigational Site St Louis Missouri 63110 Recruiting
GSK Investigational Site Omaha Nebraska 68114 Recruiting
GSK Investigational Site New York New York 10032 Completed
GSK Investigational Site The Bronx New York 10468 Recruiting
GSK Investigational Site Canton Ohio 44718 Recruiting
GSK Investigational Site Cincinnati Ohio 45219 Completed
GSK Investigational Site Tulsa Oklahoma 74146 Recruiting
GSK Investigational Site Philadelphia Pennsylvania 19107 Recruiting
GSK Investigational Site Pittsburgh Pennsylvania 15212 Recruiting
GSK Investigational Site Charleston South Carolina 29425 Recruiting
GSK Investigational Site Greenville South Carolina 29607 Completed
GSK Investigational Site Chattanooga Tennessee 37404 Recruiting
GSK Investigational Site Germantown Tennessee 38138 Recruiting
GSK Investigational Site Nashville Tennessee 37203 Recruiting
GSK Investigational Site Dallas Texas 75246 Recruiting
GSK Investigational Site Fort Worth Texas 76104 Recruiting
GSK Investigational Site San Antonio Texas 78217 Recruiting
GSK Investigational Site Fredericksburg Virginia 22408 Recruiting
GSK Investigational Site Wytheville Virginia 24382 Recruiting
GSK Investigational Site Tacoma Washington 98405 Withdrawn

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 241 non-U.S. sites.

About this trial record page

What this page shows
Public field values for ClinicalTrials.gov record NCT06256588, 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 25, 2026 · Synced Sep 2, 2026

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Open the official record

The complete protocol, eligibility criteria, and contact information for NCT06256588 live on ClinicalTrials.gov.

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