Clinical trialNCT05812807RecruitingPhase 3Interventional

Pembrolizumab vs. Observation in People With Triple-negative Breast Cancer Who Had a Pathologic Complete Response After Chemotherapy Plus Pembrolizumab

SponsorAlliance for Clinical Trials in OncologyEnrollment1,295Anatomic Stage II Breast Cancer AJCC v8Anatomic Stage IIIA Breast Cancer AJCC v8Anatomic Stage IIIB Breast Cancer AJCC v8Early Stage Triple-Negative Breast Carcinoma

View the registry record on ClinicalTrials.gov

Summary

The registered summary isn't in our current data snapshot. Read it on the ClinicalTrials.gov record ↗. Why? →

Investigators

No overall officials are registered on this study record. Site-level investigators, where published, appear with their sites below. Why? →

A profile link is shown only when the registered name resolves to a person record with a confident, namesake-checked match; ambiguous names stay unlinked.

Sites

842 registered facilities, with the per-site recruitment status where the registry publishes one. ClinicalTrials.gov does not publish per-site enrollment counts.

Canada

Bcca-Cancer Centre for the Southern Interior
Kelowna, British Columbia, Canada
Sara K. Taylor
Recruiting
Bcca-Vancouver Cancer Centre
Vancouver, British Columbia, Canada
Stephen K. Chia
Recruiting
Atlantic Health Sciences Corporation-Saint John Regional Hospital
Saint John, New Brunswick, Canada
Amy Groom
Recruiting
Cambridge Memorial Hospital
Cambridge, Ontario, Canada
Skander Ghedira
Recruiting
Kingston Health Sciences Centre
Kingston, Ontario, Canada
Brooke E. Wilson
Recruiting
London Regional Cancer Program
London, Ontario, Canada
Hamid Mithoowani
Recruiting
Ottawa Hospital and Cancer Center-General Campus
Ottawa, Ontario, Canada
Sharon McGee
Recruiting
Odette Cancer Centre- Sunnybrook Health Sciences Centre
Toronto, Ontario, Canada
Katarzyna (Kasia) J. Jerzak
Recruiting
University Health Network-Princess Margaret Hospital
Toronto, Ontario, Canada
David W. Cescon
Recruiting
Jewish General Hospital
Montreal, Quebec, Canada
Jennifer Friedmann
Recruiting
Chu de Quebec-Hopital Du Saint-Sacrement (hss)
Québec, Quebec, Canada
Claudya Morin
Recruiting
Centre Hospitalier Regional de Trois-Rivieres
Trois-Rivières, Quebec, Canada
Anouk Tremblay
Recruiting
Allan Blair Cancer Centre
Regina, Saskatchewan, Canada
Muhammad H. Khan
Recruiting
Saskatoon Cancer Centre
Saskatoon, Saskatchewan, Canada
Shahid Ahmed
Recruiting

Puerto Rico

Doctors Cancer Center
Manati, Puerto Rico
Luis J. Santos Reyes
Recruiting
Centro Comprensivo de Cancer de Upr
San Juan, Puerto Rico
Luis J. Santos Reyes
Recruiting
Proncology
San Juan, Puerto Rico
Luis J. Santos Reyes
Recruiting
San Juan City Hospital
San Juan, Puerto Rico
Luis J. Santos Reyes
Recruiting

United States

University of Alabama at Birmingham Cancer Center
Birmingham, Alabama, United States
Active, not recruiting
Thomas Hospital
Fairhope, Alabama, United States
Prajwol Pathak
Recruiting
Mobile Infirmary Medical Center
Mobile, Alabama, United States
Prajwol Pathak
Recruiting
University of South Alabama Mitchell Cancer Institute
Mobile, Alabama, United States
Ayesha Munir
Recruiting
Katmai Oncology Group
Anchorage, Alaska, United States
Alison K. Conlin
Recruiting
Ctca at Western Regional Medical Center
Goodyear, Arizona, United States
Cynthia A. Lynch
Recruiting
Kingman Regional Medical Center
Kingman, Arizona, United States
John A. Ellerton
Recruiting
Cancer Center at Saint Joseph'S
Phoenix, Arizona, United States
Shahzad Siddique
Recruiting
Mayo Clinic Hospital in Arizona
Phoenix, Arizona, United States
Roberto A. Leon-Ferre
Recruiting
Highlands Oncology Group - Fayetteville
Fayetteville, Arkansas, United States
Joseph T. Beck
Recruiting
Nea Baptist Memorial Hospital and Fowler Family Cancer Center - Jonesboro
Jonesboro, Arkansas, United States
Amna Khattak
Recruiting
University of Arkansas for Medical Sciences
Little Rock, Arkansas, United States
Sri Obulareddy
Recruiting
Highlands Oncology Group - Rogers
Rogers, Arkansas, United States
Joseph T. Beck
Recruiting
Highlands Oncology Group
Springdale, Arkansas, United States
Joseph T. Beck
Recruiting
Mission Hope Medical Oncology - Arroyo Grande
Arroyo Grande, California, United States
Shahzad Siddique
Recruiting
Pcr Oncology
Arroyo Grande, California, United States
John A. Ellerton
Recruiting
Alta Bates Summit Medical Center-Herrick Campus
Berkeley, California, United States
Uma Suryadevara
Recruiting
Tower Cancer Research Foundation
Beverly Hills, California, United States
Yuan Yuan
Recruiting
Marshall Cancer Center
Cameron Park, California, United States
Mili Arora
Recruiting
Mercy Cancer Center - Carmichael
Carmichael, California, United States
Shahzad Siddique
Recruiting
Mercy San Juan Medical Center
Carmichael, California, United States
Shahzad Siddique
Recruiting
Enloe Medical Center
Chico, California, United States
Mili Arora
Recruiting

802 more sites on the registry record.ClinicalTrials.gov ↗

Site investigator names are published by ClinicalTrials.gov only while a study recruits, so completed studies list sites without them.

Drugs studied

The drug and biological interventions registered on this study, normalized to their RxNorm ingredient where possible.

Pembrolizumab →

Linked drugs open the directory filtered to KOLs working with them.clinicaltrials.gov ↗

Registration & key dates

Registry attributes as recorded on the ClinicalTrials.gov study record.

Start: 14 Jun 2023
Primary completion: 31 May 2033
Completion: 31 May 2033
Last update posted: 2 Jul 2026
Registered enrollment: 1,295
Registry id: NCT05812807

clinicaltrials.gov ↗

Source: ClinicalTrials.gov, via the CTTI AACT database, data as of 12 Jul 2026. Registry facts are shown as registered by the study sponsor; findmyKOL does not interpret them.