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Evaluating Minimal Residual Disease (MRD) Through Longitudinal Circulating Tumor DNA (ctDNA) Profiling in Breast Malignancies

Evaluating Minimal Residual Disease (MRD) Through Longitudinal Circulating Tumor DNA (ctDNA) Profiling in Breast Malignancies

Status
Recruiting
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT07211178
Acronym
GEMINI Breast
Enrollment
900
Registered
2025-10-07
Start date
2025-10-27
Completion date
2033-12-01
Last updated
2026-09-03

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Breast Cancer, Early Stage Breast Cancer, HER2 + Breast Cancer, HR Positive/HER-2 Negative Breast Cancer, TNBC - Triple-Negative Breast Cancer

Keywords

Minimal Residual Disease, MRD, Next generation sequencing, NGS, ctDNA, Early Stage Breast Cancer, TNBC - Triple Negative Breast Cancer, HR positive / HER-2 negative breast cancer, HER2+ breast cancer

Brief summary

For patients with breast cancer, it's important to find any remaining cancer cells after they've had their main treatment. Even a few cells, called minimal residual disease (MRD), can lead to the cancer coming back later. A way to find these cells is by looking for tiny bits of cancer DNA that are shed into the blood. This is called circulating tumor DNA (ctDNA). A simple blood test, often called a liquid biopsy, can detect this ctDNA. This research aims to see if finding this cancer DNA in the blood can help predict if a patient's cancer will return. It also may help find out if the treatment is working. Ultimately, the results of this research may help doctors better manage breast cancer and develop new and improved tests and treatments.

Interventions

OTHERThere are no interventions in this observational study.

There are no interventions in this observational study.

Sponsors

Tempus AI
Lead SponsorINDUSTRY

Study design

Observational model
COHORT
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
ALL
Age
18 Years to 99 Years
Healthy volunteers
No

Inclusion criteria

All Cohorts: 1. Willing and able to participate in the research and provide biospecimens 2. Willing and able to provide informed consent 3. Must be diagnosed with breast cancer Cohort 1: Neoadjuvant Treatment Cohort 1A: Newly Diagnosed, High Risk HR+,HER2- 1. A known or suspected HR+, HER2- breast cancer treated with curative intent (Stage II to III disease) 2. Patients are considered at high risk of recurrence, defined as 4 or more positive axillary lymph nodes (ALNs), or between 1-3 positive ALNs and either grade 3 disease or tumor size of 5 cm or larger. Cohort 1B: HER2+ 1. A known or suspected HER2+ breast cancer treated with curative intent (Stage II to III disease). Inclusive of HR+ or HR- patients. Cohort 1C: Triple Negative Breast Cancer 1\. A known or suspected triple negative breast cancer treated with curative intent (Stage I to III disease). Cohort 2: Adjuvant Therapy / Surveillance Cohort 2A: Newly Diagnosed HR+,HER2- 1. A known or suspected HR+, HER2- breast cancer treated with curative intent (Stage II to III disease) 2. Patients are considered at high risk of recurrence, defined as 4 or more positive axillary lymph nodes (ALNs), or between 1-3 positive ALNs and either grade 3 disease or tumor size of 5 cm or larger. 3. Have undergone curative intent surgery with no clinical evidence of disease. Cohort 2B: HER2+ 1. A known or suspected HER2+ breast cancer treated with curative intent (Stage II to III disease) 2. Have undergone curative intent surgery with no clinical evidence of disease. Cohort 2C: Triple Negative Breast Cancer 1. A known or suspected triple negative breast cancer treated with curative intent (Stage I to III disease) 2. Have undergone curative intent surgery with no clinical evidence of disease. Cohort 3: 5-Years Post-Diagnosis Surveillance (NED) 1. A known HR+, HER2- breast cancer treated with curative intent (Stage II to III disease). 2. No Evidence of Disease (NED) ≥ 5 years from initial diagnosis. 3. Patients are considered at high risk of recurrence, defined as 4 or more positive axillary lymph nodes (ALNs), or between 1-3 positive ALNs and either grade 3 disease or tumor size of 5 cm or larger.

Exclusion criteria

1. Not willing or able to adhere with the study procedures 2. Active secondary malignancy 3. Diagnosis of a malignancy within 3 years of breast cancer diagnosis Note: Ductal carcinoma in situ (DCIS, ipsilateral or contralateral) within 3 years is not excluded.

Design outcomes

Primary

MeasureTime frame
Invasive Disease-Free Survival (iDFS) stratified by MRD status during neoadjuvant, post-surgery landmark, post definitive treatment (surveillance), and long-term follow-up5 years

Secondary

MeasureTime frame
Distant disease free survival rates stratified by MRD status during neoadjuvant treatment5 years
Overall Survival rates stratified by MRD status during neoadjuvant treatment, post-surgery landmark, post definitive treatment (surveillance), and long-term follow-up5 years
Pathologic Complete Response (pCR) or Residual Cancer Burden (RCB) rate stratified by MRD status at post-surgery landmark5 years
Time from First Positive MRD Sample to Recurrence5 years

Countries

United States

Contacts

CONTACTGEMINI Breast Clinical Study Manager
gemini-breast@tempus.com(833) 514-4187
PRINCIPAL_INVESTIGATORMichelle Ting-Lin, MD

Tempus AI

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Sep 4, 2026