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Breast Cancer clinical trials in Whittier, CA

4 studies for Breast Cancer are looking for participants at sites in and around Whittier (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 →

A Clinical Study of Sacituzumab Tirumotecan (Sac-TMT, MK-2870) in People With Breast Cancer (MK-2870-032)

RecruitingPhase 3
  • Helios Clinical Research ( Site 0061), Whittier
Ages 18 and older · All sexes · Updated Sep 25, 2026 · NCT06966700

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

RecruitingObservational study
  • PIH Health Whittier Hospital, Whittier
Ages 18 to 99 · All sexes · Updated Sep 3, 2026 · NCT07211178

Phase 3 Study to Evaluate the Efficacy and Safety of HER2/Neu Peptide GLSI-100 (GP2 + GM-CSF) in HER2/Neu Positive Subjects

RecruitingPhase 3
  • PIH Health Hospital - Whittier Hospital, Whittier
Ages 18 to 100 · All sexes · Updated Aug 6, 2026 · NCT05232916

Trastuzumab Deruxtecan Alone or in Combination With Anastrozole for the Treatment of Early Stage HER2 Low, Hormone Receptor Positive Breast Cancer

RecruitingPhase 2
  • PIH Health, Whittier
Ages 18 and older · All sexes · Updated Nov 10, 2025 · NCT04553770

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 Whittier

From ClinicalTrials.gov, data retrieved Oct 5, 2026. Each study sets its own eligibility; the study team decides who can join.