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Breast Cancer clinical trials in Santa Rosa, CA

11 studies for Breast Cancer are looking for participants at sites in and around Santa Rosa (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 →

Distance-Based Exercise to Preserve Function and Prevent Disability

Recruiting
  • Kaiser Permanente-Santa Rosa, Santa Rosa
Ages 18 and older · All sexes · Updated Oct 2, 2026 · NCT07059884

Collecting Blood Samples From Patients With and Without Cancer to Evaluate Tests for Early Cancer Detection

RecruitingObservational studyHealthy volunteers welcome
  • Providence Medical Foundation - Santa Rosa, Santa Rosa
  • Providence Santa Rosa Memorial Hospital, Santa Rosa
  • Saint Helena Hospital, St. Helena · 14 mi away
Ages 40 to 75 · All sexes · Updated Oct 2, 2026 · NCT05334069

The CDK4/6 Inhibitor Dosing Knowledge (CDK) Study

RecruitingPhase 3
  • Providence Medical Foundation, Santa Rosa
Ages 60 and older · All sexes · Updated Sep 25, 2026 · NCT06377852

A Study of Tersolisib (LY4064809/STX-478) With Other Anti-Cancer Treatments in Participants With Advanced Breast Cancer With a Genetic Change (PIK3CA)

RecruitingPhase 3
  • Providence Medical Foundation, Santa Rosa
Ages 18 and older · All sexes · Updated Sep 22, 2026 · NCT07174336

A Phase I/IIa Study of AZD8205 Given Alone or Combined, in Participants With Advanced/Metastatic Solid Malignancies

RecruitingPhase 1/2
  • Research Site, Santa Rosa
Ages 18 and older · All sexes · Updated Sep 11, 2026 · NCT05123482

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
  • Kaiser Permanente-Santa Rosa, Santa Rosa
  • Providence Medical Foundation - Santa Rosa, Santa Rosa
  • Sutter Pacific Medical Foundation, Santa Rosa
  • and 2 more
Ages 18 to 60 · Women · Updated Sep 2, 2026 · NCT05879926

E-Mindfulness Approaches for Living After Breast Cancer

RecruitingPhase 3
  • Kaiser Permanente-Santa Rosa, Santa Rosa
  • Providence Medical Foundation - Santa Rosa, Santa Rosa
Ages 18 to 50 · All sexes · Updated Aug 4, 2026 · NCT06748222

Rinatabart Sesutecan (Rina-S, PRO1184, GEN1184) for Advanced Solid Tumors (GCT1184-01/ PRO1184-001)

RecruitingPhase 1/2
  • Providence Medical Foundation, Santa Rosa
Ages 18 and older · All sexes · Updated Aug 4, 2026 · NCT05579366

Evaluation of Lasofoxifene Combined With Abemaciclib Compared With Fulvestrant Combined With Abemaciclib in Locally Advanced or Metastatic ER+/HER2- Breast Cancer With an ESR1 Mutation

RecruitingPhase 3
  • Providence Medical Foundation - Santa Rosa, CA, Santa Rosa
Ages 18 and older · All sexes · Updated Jun 22, 2026 · NCT05696626

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
  • Kaiser Permanente-Santa Rosa, Santa Rosa
  • Sutter Pacific Medical Foundation, Santa Rosa
  • Rohnert Park Cancer Center, Rohnert Park · 7 mi away
  • and 1 more
Ages 50 to 70 · All sexes · Updated Apr 23, 2026 · NCT04852887

Assessing Benefits and Harms of Cannabis/Cannabinoid Use Among Cancer Patients Treated in Community Oncology Clinics

RecruitingObservational study
  • Kaiser Permanente-Santa Rosa, Santa Rosa
  • Providence Medical Foundation - Santa Rosa, Santa Rosa
  • Saint Helena Hospital, St. Helena · 14 mi away
Ages 18 and older · All sexes · Updated Mar 17, 2026 · NCT06418204

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

Other studies in Santa Rosa

From ClinicalTrials.gov, data retrieved Oct 6, 2026. Each study sets its own eligibility; the study team decides who can join.