Clinical trialNCT03723928RecruitingInterventional

S1703 Serum Tumor Marker Directed Disease Monitoring in Patients With Hormone Receptor Positive Her2 Negative Metastatic Breast Cancer

SponsorSWOG Cancer Research NetworkEnrollment739Anatomic Stage IV Breast Cancer AJCC v8Elevated CA15-3 or CEA or CA27-29Estrogen Receptor PositiveHER2/Neu NegativeProgesterone Receptor PositivePrognostic Stage IV Breast Cancer AJCC v8

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

The overall officials registered on this study. Names that resolve to a findmyKOL profile link to it; the rest are shown as registered.

Melissa Accordino
SWOG Cancer Research Network
Principal Investigator
clinicaltrials.gov ↗

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

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

Guam

Fhp Health Center-Guam
Tamuning, Guam
Suspended

Puerto Rico

Advance Oncology Center
Aguadilla, Puerto Rico
Suspended
Doctor'S Cancer Center-Arecibo
Arecibo, Puerto Rico
Suspended
Cancer Center-Metro Medical Center Bayamon
Bayamón, Puerto Rico
Luis J. Santos Reyes
Recruiting
Hematologia Oncologia San Pablo
Bayamón, Puerto Rico
Suspended
Hima San Pablo Oncologic Hospital
Caguas, Puerto Rico
Suspended
Doctors Cancer Center
Manati, Puerto Rico
Luis J. Santos Reyes
Recruiting
Instituto Oncologia Moderna Ponce
Ponce, Puerto Rico
Suspended
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
Primary Care Physician Group
San Juan, Puerto Rico
Suspended
San Juan City Hospital
San Juan, Puerto Rico
Luis J. Santos Reyes
Recruiting
San Juan Community Oncology Group
San Juan, Puerto Rico
Luis J. Santos Reyes
Recruiting
Centro de Hematologia Y Oncologia del Sur
Santa Isabel, Puerto Rico
Suspended

United States

Alaska Breast Care and Surgery Llc
Anchorage, Alaska, United States
Charles W. Drescher
Recruiting
Alaska Oncology and Hematology Llc
Anchorage, Alaska, United States
Charles W. Drescher
Recruiting
Alaska Women'S Cancer Care
Anchorage, Alaska, United States
Charles W. Drescher
Recruiting
Anchorage Associates in Radiation Medicine
Anchorage, Alaska, United States
Charles W. Drescher
Recruiting
Anchorage Oncology Centre
Anchorage, Alaska, United States
Charles W. Drescher
Recruiting
Anchorage Radiation Therapy Center
Anchorage, Alaska, United States
Charles W. Drescher
Recruiting
Katmai Oncology Group
Anchorage, Alaska, United States
Charles W. Drescher
Recruiting
Providence Alaska Medical Center
Anchorage, Alaska, United States
Charles W. Drescher
Recruiting
Fairbanks Memorial Hospital
Fairbanks, Alaska, United States
Nicholas DiBella
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
Banner University Medical Center - Tucson
Tucson, Arizona, United States
Sima Ehsani
Recruiting
University of Arizona Cancer Center-North Campus
Tucson, Arizona, United States
Sima Ehsani
Recruiting
University of Arizona Cancer Center-Orange Grove Campus
Tucson, Arizona, United States
Sima Ehsani
Recruiting
Mercy Hospital Fort Smith
Fort Smith, Arkansas, United States
Jay W. Carlson
Recruiting
Chi Saint Vincent Cancer Center Hot Springs
Hot Springs, Arkansas, United States
Suspended
Nea Baptist Memorial Hospital and Fowler Family Cancer Center - Jonesboro
Jonesboro, Arkansas, United States
Drew S. Dill
Recruiting
University of Arkansas for Medical Sciences
Little Rock, Arkansas, United States
Sindhu Malapati
Recruiting
Kaiser Permanente-Anaheim
Anaheim, California, United States
Lara N. Durna
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
Kaiser Permanente-Baldwin Park
Baldwin Park, California, United States
Lara N. Durna
Recruiting
Kaiser Permanente-Bellflower
Bellflower, California, United States
Lara N. Durna
Recruiting
Providence Saint Joseph Medical Center/disney Family Cancer Center
Burbank, California, United States
Charles W. Drescher
Recruiting
Marshall Cancer Center
Cameron Park, California, United States
Richard J. Bold
Recruiting
Mercy Cancer Center �� Carmichael
Carmichael, California, United States
Shahzad Siddique
Recruiting

683 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

No drug or biological interventions are in our data for this study — it may test a procedure, device or behavioral intervention, or the intervention list isn't in our current snapshot. See the registry record ↗. Why? →

Registration & key dates

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

Start: 17 Sept 2018
Primary completion: 1 Dec 2030
Completion: 1 Dec 2036
Last update posted: 2 Apr 2026
Registered enrollment: 739
Registry id: NCT03723928

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.