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Breast Cancer clinical trials in Billings, MT
10 studies for Breast Cancer are looking for participants at sites in and around Billings (within about 30 miles). Open a study to see who can join and how to contact the study team.
Recruiting for a study here? Feature it at the top of this page — $99 for 30 days →
Phase IIIb Study of Ribociclib + ET in Early Breast Cancer
RecruitingPhase 3
- Intermountain Healthcare, Billings
Collecting Blood Samples From Patients With and Without Cancer to Evaluate Tests for Early Cancer Detection
RecruitingObservational studyHealthy volunteers welcome
- Billings Clinic Cancer Center, Billings
ASPEN-09-03: A Study of Evorpacept in Combination With Trastuzumab and Chemotherapy in Metastatic HER2-Positive Breast Cancer
RecruitingPhase 2
- St. Vincent Regional Hospital - Cancer Centers of Montana, Billings
Study of Patritumab Deruxtecan Plus Pembrolizumab With Other Anticancer Agents in Participants With High-Risk Early-Stage Triple-Negative or Hormone Receptor-Low Positive/HER-2 Negative Breast Cancer (MK-1022-010, HERTHENA-Breast-03)
RecruitingPhase 2
- Intermountain Health St. Vincent Regional Hospital - Cancer Centers of Montana ( Site 0003), Billings
A Trial to Evaluate Ovarian Suppression Following Subcutaneous ZOLADEX 10.8 mg in Premenopausal Women With Early-stage and Advanced HR+ Breast Cancer
RecruitingPhase 1
- St. Vincent Frontier Cancer Center (SVFCC) - Billings (Frontier Cancer Center and Blood Institute), Billings
Evaluating the Addition of Adjuvant Chemotherapy to Ovarian Function Suppression Plus Endocrine Therapy in Premenopausal Patients With pN0-1, ER-Positive/HER2-Negative Breast Cancer and an Oncotype Recurrence Score Less Than or Equal to 25
RecruitingPhase 3
- Billings Clinic Cancer Center, Billings
- Saint Vincent Frontier Cancer Center, Billings
- Intermountain Health West End Clinic, Billings
Phase 3 Study of Gedatolisib as First-Line Treatment for Patients With HR-Positive, HER2-Negative Advanced Breast Cancer (VIKTORIA-2)
RecruitingPhase 3
- SCL Health - Cancer Centers of Montana, Billings
De-Escalation of Breast Radiation Trial for Hormone Sensitive, HER-2 Negative, Oncotype Recurrence Score Less Than or Equal to 18 Breast Cancer (DEBRA)
RecruitingPhase 3
- Billings Clinic Cancer Center, Billings
Assessing Benefits and Harms of Cannabis/Cannabinoid Use Among Cancer Patients Treated in Community Oncology Clinics
RecruitingObservational study
- Billings Clinic Cancer Center, Billings
- Montana Cancer Consortium NCORP, Billings
SYNERGY-AI: Artificial Intelligence Based Precision Oncology Clinical Trial Matching and Registry
RecruitingObservational study
- Massive Bio SYNERGY-AI site, Billings
About Breast Cancer
Breast cancer is a cancer that starts in the breast tissue, when cells change and grow out of control. These extra cells can form a mass called a tumor.
More about Breast Cancer on MedlinePlus
Breast Cancer trials in other cities
- New York City, NY136 studies
- Houston, TX126 studies
- Boston, MA112 studies
- Nashville, TN81 studies
- Los Angeles, CA73 studies
- Edison, NJ68 studies
- St. Louis, MO64 studies
- Queens, NY64 studies
- Durham, NC64 studies
- Chicago, IL59 studies
- Philadelphia, PA56 studies
- Dallas, TX55 studies
Other studies in Billings
- Non-Small Cell Lung Cancer17 studies
- Prostate Cancer15 studies
- Lung Cancer13 studies
- Ovarian Cancer9 studies
- Melanoma7 studies
- Chronic Lymphocytic Leukemia7 studies
- Acute Myeloid Leukemia7 studies
- Bladder Cancer6 studies
- Colon Cancer6 studies
- Colorectal Cancer6 studies
- Rectal Cancer5 studies
- Head and Neck Squamous Cell Carcinoma4 studies
From ClinicalTrials.gov, data retrieved Oct 6, 2026. Each study sets its own eligibility; the study team decides who can join.