The state of California currently has 201 active clinical trials seeking participants for Breast Cancer research studies. These trials are conducted in various cities, including Los Angeles, San Francisco, San Diego and Sacramento.
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
Recruiting
The goal of this clinical trial is to assess the efficacy, safety and tolerability of the combination of lasofoxifene and abemaciclib compared to fulvestrant and abemaciclib for the treatment of pre- and postmenopausal women and men who have previously received ribociclib or palbociclib-based treatment and have locally advanced or metastatic estrogen receptor positive (ER+)/human epidermal growth factor 2 negative (HER2-) breast cancer with an estrogen receptor 1 (ESR1) mutation. The main quest... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/30/2025
Locations: Providence Medical Foundation - Santa Rosa, CA, Santa Rosa, California
Conditions: Metastatic Breast Cancer
Prevention of Frailty With Fisetin and Exercise in Breast Cancer Survivors
Recruiting
This phase II trial tests how well fisetin and exercise works in preventing frailty in breast cancer survivors. Fisetin is a natural substance found in strawberries and other foods and is available as a nutritional supplement. Nutritional supplements may be useful in eliminating cells that have undergone a process called senescence. Senescence is when a cell ages and permanently stops dividing but does not die. Over time, large numbers of these cells build up in tissues throughout the body and c... Read More
Gender:
FEMALE
Ages:
All
Trial Updated:
06/30/2025
Locations: UCLA Health Cancer Care in Alhambra, Alhambra, California +5 locations
Conditions: Anatomic Stage I Breast Cancer American Joint Committee on Cancer (AJCC) v8, Anatomic Stage II Breast Cancer AJCC v8, Anatomic Stage III Breast Cancer AJCC v8, Early Stage Breast Carcinoma
Magnetic Resonance Imaging of Breast Cancer
Recruiting
To compare magnetic resonance imaging (MRI) with more well established diagnostic imaging techniques to determine which method best finds and defines breast cancer.
Gender:
FEMALE
Ages:
21 years and above
Trial Updated:
06/27/2025
Locations: Stanford University School of Medicine, Stanford, California
Conditions: Breast Cancer, Breast Cancer Non-invasive Breast Cancer
Fisetin to Improve Physical Function in Stage I-III Breast Cancer Survivors
Recruiting
This phase II trial tests whether fisetin works to improve physical function in women who have received chemotherapy for stage I-III breast cancer treatment. Fisetin is a naturally occurring substance that is found in strawberries and other foods. Fisetin eliminates cells that have undergone a process called senescence. Senescence is when a cell ages and permanently stops dividing but does not die. Over time, large numbers of these cells build up in tissues throughout the body and can release ha... Read More
Gender:
FEMALE
Ages:
All
Trial Updated:
06/27/2025
Locations: UCLA Health Cancer Care in Alhambra, Alhambra, California +6 locations
Conditions: Anatomic Stage II Breast Cancer AJCC v8, Anatomic Stage III Breast Cancer AJCC v8, Anatomic Stage I Breast Cancer AJCC v8
First-in-Human Study of OKI-219 in Advanced Solid Tumors and Advanced Breast Cancer
Recruiting
OKI-219-101 is a Phase 1a/1b, open-label, multicenter, dose-escalation study designed to evaluate the safety, tolerability, pharmacokinetics (PK), pharmacodynamics (PDx), and efficacy of OKI-219 as monotherapy and in combination with fulvestrant or trastuzumab. Phase 1a (Part A) will investigate escalating doses of OKI-219 monotherapy, and Phase 1b will investigate OKI-219 (at a tolerated dose determined in Part A) in combination with standard dose fulvestrant (Part B) or standard dose trastuzum... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/26/2025
Locations: California Cancer Associates for Research and Excellence, Encinitas, California +3 locations
Conditions: Advanced Cancer, Breast Cancer
Study Assessing QBS72S For Treating Brain Metastases
Recruiting
This study is to evaluate the efficacy and safety of QBS72S in participants with advanced, relapsed, metastatic cancer with CNS involvement
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/25/2025
Locations: Stanford Cancer Institute, Palo Alto, California
Conditions: Brain Metastases, Breast Cancer, Lung Cancer, Leptomeningeal Disease, LMD
Additional Support Program Via Text Messaging and Telephone-Based Counseling for Breast Cancer Patients Receiving Hormonal Therapy
Recruiting
This phase III trial compares an additional support program (text message reminders and/or telephone-based counseling) with usual care in making sure breast cancer patients take their endocrine therapy medication as prescribed (medication adherence). Medication adherence is how well patients take the medication as prescribed by their doctors, and good medical adherence is when patients take medications correctly. Poor medication adherence has been shown to be a serious barrier to effective treat... Read More
Gender:
FEMALE
Ages:
18 years and above
Trial Updated:
06/24/2025
Locations: Kaiser Permanente-Anaheim, Anaheim, California +55 locations
Conditions: Anatomic Stage I Breast Cancer AJCC v8, Anatomic Stage II Breast Cancer AJCC v8, Anatomic Stage III Breast Cancer AJCC v8, HER2 Negative Breast Carcinoma, Hormone Receptor Positive Breast Carcinoma, Invasive Breast Carcinoma, Prognostic Stage I Breast Cancer AJCC v8, Prognostic Stage II Breast Cancer AJCC v8, Prognostic Stage III Breast Cancer AJCC v8
Pembrolizumab vs. Observation in People With Triple-negative Breast Cancer Who Had a Pathologic Complete Response After Chemotherapy Plus Pembrolizumab
Recruiting
The phase III trial compares the effect of pembrolizumab to observation for the treatment of patients with early-stage triple-negative breast cancer who achieved a pathologic complete response after preoperative chemotherapy in combination with pembrolizumab. Immunotherapy with monoclonal antibodies, such as pembrolizumab, may help the body's immune system attack the cancer, and may interfere with the ability of tumor cells to grow and spread. This trial may help researchers determine if observa... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/24/2025
Locations: PCR Oncology, Arroyo Grande, California +42 locations
Conditions: Anatomic Stage I Breast Cancer AJCC v8, Anatomic Stage II Breast Cancer AJCC v8, Anatomic Stage III Breast Cancer AJCC v8, Early Stage Triple-Negative Breast Carcinoma
Testing Low Dose Tamoxifen for Invasive Breast Cancer, the (LoTam) Trial
Recruiting
This phase III trial compares the effect of low dose tamoxifen to usual hormonal therapy, including aromatase inhibitors, in treating post-menopausal women with hormone positive, HER2 negative early stage breast cancer. Tamoxifen is in a class of medications known as antiestrogens. It blocks the activity of estrogen (a female hormone) in the breast. This may stop the growth of some breast tumors that need estrogen to grow. Aromatase inhibitors, such as anastrozole, letrozole, and exemestane, pre... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/24/2025
Locations: Tower Cancer Research Foundation, Beverly Hills, California +36 locations
Conditions: Anatomic Stage 0 Breast Cancer AJCC V8, Anatomic Stage 1 Breast Cancer AJCC V8, Anatomic Stage IIA Breast Cancer AJCC V8, Estrogen Receptor-Positive Breast Carcinoma, HER2-Negative Breast Carcinoma
Gedatolisib Plus Fulvestrant With or Without Palbociclib vs Standard-of-Care for the Treatment of Patients With Advanced or Metastatic HR+/HER2- Breast Cancer (VIKTORIA-1)
Recruiting
This is a Phase 3, open-label, randomized, clinical trial evaluating the efficacy and safety of gedatolisib plus fulvestrant with or without palbociclib for the treatment of patients with locally advanced or metastatic HR+/HER2- breast cancer following progression on or after CDK4/6 and aromatase inhibitor therapy.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/23/2025
Locations: Pacific Cancer Medical Center Inc, Anaheim, California +10 locations
Conditions: Breast Cancer
Repurposing Riluzole for Cancer-Related Cognitive Impairment: A Pilot Trial
Recruiting
This is a phase 2a, randomized, double-blinded, placebo-controlled pilot clinical trial determining the impact of riluzole therapy on circulating brain derived neuropathic factor (BDNF) levels of cancer survivors with cancer related cognitive impairment.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/21/2025
Locations: Chao Family Comprehensive Cancer Center, University of California Irvine, Orange, California
Conditions: Breast Cancer, Sarcoma, Gastric Cancer, Lung Cancer, Head and Neck Cancer, Colorectal Cancer, Ovarian Cancer, Liver Cancer, Genitourinary Cancer, Gynecologic Cancer
Women Informed to Screen Depending on Measures of Risk (Wisdom Study)
Recruiting
Most physicians still use a one-size-fits-all approach to breast screening in which all women, regardless of their personal history, family history or genetics (except BRCA carriers) are recommended to have annual mammograms starting at age 40. Mammograms benefit women by detecting cancers early when they are easier to treat, but they are not perfect. Recent news stories have discussed some of the potential harms: large numbers of positive results that cause stressful recalls for additional mamm... Read More
Gender:
FEMALE
Ages:
Between 30 years and 74 years
Trial Updated:
06/20/2025
Locations: University of California Irvine, Irvine, California +4 locations
Conditions: Breast Cancer Screening, Breast Carcinoma in Situ, Breast Cancer