Clinical trials · St. Louis, MO
Metastatic Breast Cancer clinical trials in St. Louis
We’re tracking 91 recruiting metastatic breast cancer studies with a site in or near St. Louis — including Phase 1, Phase 1/Phase 2, Phase 2, Phase 2/Phase 3 and Phase 3 studies, each written for real people, not researchers.
Recruiting studies near St. Louis
- NCT05232916RecruitingPhase 3
Vaccine for HER2-positive breast cancer after standard treatment
This trial tests a vaccine (GLSI-100) that may help prevent the return of HER2-positive breast cancer. It is given to patients who still had cancer cells after initial treatment with trastuzumab, or who had stage III disease and achieved a complete response.
St Louis, MissouriAges 18–100 - NCT06500481RecruitingPhase 3
Proton vs standard radiation for cancer spread to brain/spine lining
This trial compares a newer type of radiation (proton therapy) to standard radiation for people whose breast or lung cancer has spread to the lining of the brain and spinal cord. It aims to see if proton therapy can better control the disease while causing fewer side effects.
St Louis, MissouriAges 18 years+ - NCT06590857RecruitingPhase 1/Phase 2
Study of targeted radiation for advanced breast cancer
This trial tests a new type of radiation therapy that targets a specific protein on some breast cancer cells. It may help people whose cancer has stopped responding to other treatments.
St Louis, MissouriAges Any age - NCT07361562RecruitingPhase 1
Study of CGT4255 for advanced solid tumors with HER2 changes
This trial tests an oral drug called CGT4255 for people with advanced solid tumors that have certain changes in the HER2 gene or related proteins. It aims to see if the drug is safe and effective.
St Louis, MissouriAges 18 years+ - NCT06545331RecruitingPhase 1
A study of XB010 for advanced solid tumors
This trial tests an investigational drug called XB010 for people with solid tumors that have spread or cannot be removed by surgery. It aims to see if XB010 is safe and effective for several cancer types, including lung, breast, head and neck, and esophageal cancers.
St Louis, MissouriAges 18 years+ - NCT06533644RecruitingPhase 2
SYNC-T therapy study for advanced prostate cancer
This trial tests a new treatment called SYNC-T Therapy (SV-102) for men with metastatic castration-resistant prostate cancer that has progressed after other treatments. The therapy is given directly into a tumor to help your immune system fight the cancer.
St Louis, MissouriAges 18 years+ - NCT04665739RecruitingPhase 2
Lutetium Lu-177 for lung carcinoid tumors with somatostatin receptors
This trial tests lutetium Lu 177 dotatate, a targeted radiation treatment, for advanced lung neuroendocrine (carcinoid) tumors that have a specific marker called somatostatin receptors. It may help shrink tumors by delivering radiation directly to cancer cells that “light up” on a special scan.
St Louis, MissouriAges 18 years+ - NCT06524544RecruitingPhase 3
Pembrolizumab and sacituzumab govitecan for advanced bladder cancer
This trial tests a new drug combination (pembrolizumab and sacituzumab govitecan) against standard treatment for advanced bladder cancer that has spread or cannot be removed by surgery. It's for people who have already tried an immunotherapy drug like pembrolizumab and another drug called enfortumab vedotin.
St Louis, MissouriAges 18 years+ - NCT06422806RecruitingPhase 3
Immunotherapy plus chemo for aggressive sarcoma
This trial compares a combination of immunotherapy (pembrolizumab) plus chemotherapy (doxorubicin) versus chemotherapy alone for people with aggressive, poorly differentiated sarcomas that have spread or cannot be removed. The goal is to see if adding immunotherapy helps shrink tumors or slow their growth better than chemotherapy alone.
St Louis, MissouriAges 18 years+ - NCT07100106RecruitingPhase 1/Phase 2
Study of GDC-4198 alone or with giredestrant for advanced breast cancer
This trial tests a new treatment (GDC-4198) alone or with another drug (giredestrant) compared to a standard combination (abemaciclib and giredestrant) for people with advanced hormone receptor-positive, HER2-negative breast cancer that has progressed after previous treatments.
St Louis, MissouriAges 18 years+ - NCT05123482RecruitingPhase 1/Phase 2
Study of an experimental drug for advanced solid tumors
This trial tests a new drug, called AZD8205, alone or with other medicines, for people with advanced or metastatic solid tumors that have not responded to standard treatment. It aims to see if the drug can shrink tumors or slow their growth.
St Louis, MissouriAges 18 years+ - NCT03053193Recruiting
Testing gene activity to guide breast cancer treatment
This study links breast tumor test results from MammaPrint and optional BluePrint (and full genetic data) with real-world clinical information to understand which new gene activity patterns matter. It may help future patients by improving how doctors use these tests to guide care.
St Louis, MissouriAges 18 years+ - NCT05216432RecruitingPhase 1
RLY-2608 for PIK3CA-mutant advanced solid tumors and breast cancer
This early study (Phase 1) tests RLY-2608, a targeted cancer drug for tumors with a PIK3CA mutation. It studies the drug alone and combined with hormone therapy (and sometimes CDK4/6 or CDK4 medicines) to see safety, dose, and whether it can shrink tumors.
St Louis, MissouriAges 18 years+ - NCT06682793RecruitingPhase 1/Phase 2
Study of A2B395 therapy for solid tumors with EGFR and HLA loss
This trial tests a new cell therapy called A2B395 for cancers that have EGFR, a protein on the cell surface, and have lost a specific marker called HLA-A*02. The therapy uses specially engineered immune cells to target and kill these cancer cells. This may help patients with colorectal, lung, head and neck, breast, kidney, or other solid tumors that are no longer responding to standard treatments.
St Louis, MissouriAges 18 years+ - NCT06216301RecruitingPhase 3
Electric fields with immunotherapy and chemo for advanced lung cancer
This trial tests adding a device that delivers electric fields (Tumor Treating Fields) to standard immunotherapy and chemotherapy for people with advanced non-small cell lung cancer that has not been treated before. It may help slow tumor growth.
Overland, MissouriAges 18 years+ - NCT07173751RecruitingPhase 3
Pumitamig for advanced triple-negative breast cancer
This study tests a new drug called pumitamig for people with a type of breast cancer that is triple-negative or has very low hormone receptors and has come back or spread. It aims to see if pumitamig works better than standard treatment and how safe it is for people who cannot get PD(L)-1 immunotherapy with chemo.
O'Fallon, IllinoisAges 18 years+ - NCT07578116RecruitingPhase 3
Adding surgery and radiation for her2-positive breast cancer with a few spread spots
This trial tests whether adding surgery and radiation to the usual HER2-targeted treatment helps people with breast cancer that has spread to a few spots. You must have HER2-positive cancer that is newly spread, and you must be able to receive radiation to all tumor sites.
O'Fallon, IllinoisAges 18 years+ - NCT06790693RecruitingPhase 3
Inavolisib plus hormone therapy for advanced breast cancer
This trial tests a new targeted therapy, inavolisib, combined with standard hormone therapy and a CDK4/6 inhibitor for people with a specific genetic mutation (PIK3CA) in their hormone receptor-positive, HER2-negative advanced breast cancer that has not been treated before. It compares this combination to a placebo plus the same standard treatments.
O'Fallon, IllinoisAges 18 years+ - NCT06926868RecruitingPhase 2/Phase 3
Study of a new drug versus chemotherapy for advanced triple-negative breast cancer
This trial tests a new investigational drug called izalontamab brengitecan against standard chemotherapy for people with advanced triple-negative breast cancer who cannot receive immunotherapy. The goal is to see if the new drug works better at shrinking or slowing the cancer.
O'Fallon, IllinoisAges 18 years+
Hear when a new Metastatic Breast Cancer trial opens near St. Louis, MO
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Metastatic Breast Cancer trials in other cities
Where these studies are running near St. Louis
Institutions with a site for the recruiting metastatic breast cancer studies listed above.
- Washington University in St. Louis · 5 studies
- Siteman Cancer Center · 4 studies
- Cancer Care Center of O'Fallon · 3 studies
- Siteman Cancer Center at West County Hospital · 3 studies
- HSHS Saint Elizabeth's Hospital · 2 studies
- Memorial Hospital East · 2 studies
- Missouri Baptist Medical Center · 2 studies
- Siteman Cancer Center at Saint Peters Hospital · 2 studies
What taking part in a metastatic breast cancer study involves
A screening visit first
Before anything else, the study team checks whether you fit — usually a visit with some tests. You can stop at any point, and screening is typically free.
Care at a nearby site
Study visits happen at a clinic or hospital taking part. Many studies cover the cost of the study treatment and related visits, and some reimburse travel.
You stay in control
Taking part is voluntary and you can leave a study at any time, for any reason, without affecting your regular care.
The team decides eligibility
Our fit check is a helpful first read, not a decision. The study team makes the final call after reviewing your health history.
Looking wider? See all recruiting metastatic breast cancer studies in Missouri.
Common questions
- Are there metastatic breast cancer clinical trials near St. Louis?
- Yes. We're currently tracking 91 recruiting metastatic breast cancer studies with a site near St. Louis, each rewritten in plain language so you can see what it's testing and who it's for.
- How do I find out if I qualify for a metastatic breast cancer study near St. Louis?
- Each study lists its eligibility rules — age, diagnosis, prior treatments. On every trial page we explain these in plain language and offer a short, optional pre-screen for a fit read. The study team makes the final decision.
- Do I have to live in St. Louis to take part?
- Not necessarily. These studies have a site near St. Louis, but eligibility is about your health, not your address — some people travel to take part, and a few studies reimburse travel. The study team can tell you what's required.
- Does it cost anything to join a metastatic breast cancer trial?
- Using Clin2 is always free. Many trials cover the study treatment and related visits; some reimburse travel. The study team explains exactly what's covered before you decide.
Not the right time?
New metastatic breast cancer studies open near St. Louis regularly. Set up a health profile and we’ll quietly watch for studies that fit you and email you when one opens.