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Breast Cancer clinical trials in Santa Barbara, CA

6 studies for Breast Cancer are looking for participants at sites in and around Santa Barbara (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 →

Palazestrant in Combination With Ribociclib for the First-line Treatment of ER+/HER2- Advanced Breast Cancer

RecruitingPhase 3
  • Clinical Trial Site, Santa Barbara
Ages 18 and older · All sexes · Updated Sep 23, 2026 · NCT07085767

ROSETTA Breast-01: The Effects and Safety of Pumitamig in Patients With Triple-Negative Breast Cancer

RecruitingPhase 3
  • Sansum Clinic, Santa Barbara
Ages 18 and older · All sexes · Updated Sep 17, 2026 · NCT07173751

A Study of Elacestrant Versus Standard Endocrine Therapy in Women and Men With ER+,HER2-, Early Breast Cancer With High Risk of Recurrence

RecruitingPhase 3
  • Sansum Clinic, Solvang · 28 mi away
Ages 18 and older · All sexes · Updated Sep 15, 2026 · NCT06492616

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

RecruitingPhase 1/2
  • USOR Sansum Clinic, Santa Barbara
Ages 18 and older · All sexes · Updated Aug 4, 2026 · NCT05579366

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
  • Ridley-Tree Cancer Center, Santa Barbara
Ages 50 to 70 · All sexes · Updated Apr 23, 2026 · NCT04852887

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

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Other studies in Santa Barbara

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