Clinical trials
Breast Carcinoma in Situ clinical trials
Below are recruiting breast carcinoma in situ clinical trials, each written for real people, not researchers. We’re tracking 137 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT04084730RecruitingPhase 2
3-day radiation after breast-conserving surgery for certain breast cancers
This trial tests whether a shorter, 3-day course of partial breast radiation after surgery works as well as standard radiation for women with early-stage breast cancer. It may help reduce time in treatment while aiming to keep cancer from coming back in the treated breast area.
Norwalk, ConnecticutAges 45 years+ - NCT03909282Recruiting
Surgery now versus radiation then delayed surgery for DCIS
This trial compares two approaches for ductal carcinoma in situ (DCIS): having surgery first versus getting radiation first and then having surgery later. It aims to see which plan controls DCIS better while affecting treatment timing and outcomes.
Stanford, CaliforniaAges 18 years+ - NCT03448926Recruiting
DCIS test registry to guide radiation and drug decisions
This study collects information from people with breast ductal carcinoma in situ (DCIS) to see how a specific lab test (DCISionRT) may help predict who benefits from radiation and/or certain medications. Your results and clinical details are gathered during routine care, not necessarily to change treatment right away.
Scottsdale, ArizonaAges 30–85 - NCT02945579Recruiting
Testing skipping breast surgery or radiation for top responders
This trial studies whether some people with early-stage breast cancer who respond extremely well to hormone/chemo/targeted treatment can safely skip breast surgery and/or radiation. It aims to reduce side effects without increasing cancer risk in carefully selected patients.
Gilbert, ArizonaAges 30 years+ - NCT02918474Recruiting
Decision tool for mastectomy choices in new breast cancer
This study tests a decision-making tool to help people with newly diagnosed breast cancer make choices about removing the other (opposite) breast as a preventive step. It may help you think through risks and options in a clearer, more structured way.
Houston, TexasAges 18 years+ - NCT02620852Recruiting
Wisdom Study: Women’s breast cancer screening decisions
This study looks at how to decide the best breast cancer screening (like mammograms) based on your personal risk. It may help by testing a smarter way to match screening to your risk level.
Birmingham, AlabamaAges 30–74 - NCT03606967RecruitingPhase 2
Individualized vaccine added to standard treatment for metastatic triple-negative breast cancer
This Phase 2 trial tests whether adding a personalized cancer vaccine to durvalumab (an immunotherapy), tremelimumab (another immunotherapy), and chemotherapy can improve outcomes for people with metastatic triple-negative breast cancer. It may help your immune system recognize your specific tumor features.
Orange, CaliforniaAges 18 years+ - NCT07391774RecruitingPhase 3
Hormone therapy with or without chemo for early breast cancer
This trial tests whether skipping chemotherapy and using only hormone therapy with a drug called ribociclib works as well as chemotherapy followed by hormone therapy with ribociclib for certain early breast cancers that have a low risk of coming back.
Jonesboro, ArkansasAges 18 years+ - NCT04985032Recruiting
Radiation after lumpectomy for selected breast tumors
This trial tests a shorter, focused type of radiation (APBI using SBRT) after lumpectomy for certain early breast cancers. It may help by targeting only the part of the breast where the tumor was, rather than treating the whole breast, while keeping safety and cancer control in mind.
Stuart, FloridaAges 50–100 - NCT06450873RecruitingPhase 2
Turkey tail mushroom before breast cancer surgery
This trial tests whether taking a turkey tail mushroom supplement before breast cancer surgery can help the immune system fight the cancer. It is for post-menopausal women with a common type of breast cancer (ER-positive, HER2-negative) that is growing at a moderate or faster rate (Ki-67 score of 10% or more).
Scottsdale, ArizonaAges 18 years+ - NCT07613151Recruiting
Lobular breast cancer with low hormone receptors
This study looks at a rare type of breast cancer called invasive lobular carcinoma that has low or no hormone receptors. The goal is to learn more about how this cancer behaves, which may help improve future treatments.
PadovaAges 18 years+ - NCT04666961RecruitingPhase 2
Hormone therapy before surgery for extensive DCIS
This Phase 2 study tests whether taking hormone medicine before surgery can change the surgical plan and outcomes for people with extensive ductal carcinoma in situ (DCIS). It is for estrogen-receptor positive DCIS and aims to see how this “neoadjuvant” approach affects treatment decisions.
AngersAges 40 years+ - NCT05218044Recruiting
Cryoablation for small DCIS instead of breast surgery
This trial studies whether cryoablation (freezing abnormal breast tissue) can treat DCIS, a non-invasive early breast cancer, without surgical lumpectomy. It aims to see if a less invasive approach could help people with small, limited-area DCIS while avoiding some effects of surgery.
Glendale, CaliforniaAges 18 years+ - NCT06218303RecruitingPhase 1
Vaccine for early breast cancer (DCIS)
This trial tests a vaccine that targets a protein (MUC1) found in early breast cancer cells. It's for women with ER+ DCIS who are planning surgery, to see if the vaccine can help prevent the cancer from coming back or getting worse.
Pittsburgh, PennsylvaniaAges 18 years+ - NCT07198724RecruitingPhase 1/Phase 2
A study of elacestrant plus Enhertu for advanced breast cancer
This trial tests a new combination of two targeted drugs (elacestrant and Enhertu) for people with a specific type of advanced breast cancer (HR-positive, HER2-low or ultra-low) that did not respond to standard treatments like CDK4/6 inhibitors. The goal is to see if this combination works better than current options.
Boston, MassachusettsAges 18 years+ - NCT04553770RecruitingPhase 2
Trastuzumab deruxtecan with or without anastrozole for early breast cancer
This Phase 2 study tests whether trastuzumab deruxtecan alone or combined with anastrozole can control early-stage breast cancer that is HER2-low and hormone-receptor positive. It aims to improve outcomes after initial surgical treatment by targeting cancer cells that may have low levels of HER2.
Fullerton, CaliforniaAges 18 years+ - NCT06434064RecruitingPhase 2
Tamoxifen and chemotherapy for triple negative breast cancer
This trial tests a combination of tamoxifen (a hormonal therapy) and pegylated liposomal doxorubicin (a type of chemotherapy) for people with triple negative breast cancer that has spread or cannot be removed by surgery. It aims to see if this combination can help people whose cancer has not responded to at least two prior treatments.
Buffalo, New YorkAges 18 years+ - NCT04494945Recruiting
Help for people with inherited cancer risk genes
This study helps identify people who may have an inherited cancer risk and checks how best to support them. Depending on the group, you may only fill out surveys, or you may also create an app account and possibly provide a DNA sample.
Portland, OregonAges 18 years+ - NCT05770531RecruitingPhase 2
Blood test guides chemo changes for metastatic breast cancer
This Phase 2 study uses a blood test that looks for “circulating tumor DNA” to help decide if standard chemotherapy should be changed. It aims to see whether this approach improves how well treatment works for certain metastatic (stage IV) breast cancers.
Nashville, TennesseeAges 18 years+ - NCT07112053RecruitingPhase 2
Vaccine with hormone therapy or chemo for advanced breast cancer
This trial tests a vaccine (STEMVAC) given with your standard hormone therapy or chemotherapy. It is for people with advanced hormone receptor-positive, HER2-negative breast cancer who are already on certain treatments. The goal is to see if adding the vaccine can help control the cancer better.
Seattle, WashingtonAges 18 years+ - NCT07478016Recruiting
Studying inflammation and social factors in breast cancer
This study looks at how inflammation and social factors (like stress or support) affect breast cancer patients before they start treatment. You may qualify if you are a woman, newly diagnosed, and have not yet had any cancer treatment.
Philadelphia, PennsylvaniaAges 18 years+ - NCT06540872RecruitingPhase 2
Testing New PET/MRI Scan in Large DCIS
This study tests a new imaging method that combines a special PET scan (FAPI) with MRI to see if it can better find hidden invasive cancer in people with large areas of ductal carcinoma in situ (DCIS). It aims to improve surgical planning and avoid second surgeries.
Essen, North Rhine-WestphaliaAges 18 years+ - NCT07407920RecruitingPhase 2
Optimizing treatment for early HER2+ and triple-negative breast cancer
This trial aims to see if patients who had a complete response to chemo before surgery can safely stop or reduce their targeted therapy afterward. It includes people with early-stage HER2-positive or triple-negative breast cancer who had no cancer cells left in the tissue removed at surgery (a pathological complete response).
Houston, TexasAges 18 years+ - NCT06903468Recruiting
New cavity marking technique for breast cancer surgery and radiation
This trial tests a new way to mark the area where breast cancer is removed during lumpectomy with oncoplastic reconstruction. The goal is to make follow-up radiation more precise and reduce the need for additional surgeries.
Gainesville, FloridaAges 18 years+
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Common questions
- Are there clinical trials for breast carcinoma in situ?
- Yes. Clin2 currently lists 137 recruiting breast carcinoma in situ studies from the U.S. registry, each rewritten for real people, not researchers, so you can see what it’s testing and who it’s for.
- How do I know if I qualify for a breast carcinoma in situ trial?
- Each study lists its eligibility criteria — rules about age, diagnosis, and prior treatments. On every Clin2 trial page we explain these in words written for real people and offer a short, optional pre-screen for a fit read. The study team makes the final decision.
- Does it cost anything to join a breast carcinoma in situ trial?
- Using Clin2 is always free. Many trials cover the cost of the study treatment and related visits; some reimburse travel. The study team explains exactly what’s covered before you decide.
Related conditions
Clin2 helps you find and understand clinical trials and does not provide medical advice. Study data comes from ClinicalTrials.gov. Talk with your doctor about whether a specific trial is right for you.