Clinical trials
Breast Cancer Stage II clinical trials
Below are recruiting breast cancer stage ii clinical trials, each written for real people, not researchers. We’re tracking 424 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT05825482Recruiting
Testing different breast surgery margin samples with a guidance tool
This study compares two ways surgeons take “margin” samples (tissue from the edge of the tumor area) during breast-conserving surgery for early breast cancer. It uses a guidance device to help collect these samples and aims to see which approach better supports safe, effective treatment.
Akron, OhioAges 18 years+ - NCT07341867RecruitingPhase 1
Dose changes for cancer treatment in people with Duffy null
This trial tests if changing the dose of certain chemotherapy drugs can help people with a genetic trait called Duffy null avoid side effects like low white blood cell counts. It is for people with multiple myeloma or triple-negative breast cancer starting specific treatments.
Boston, MassachusettsAges 18 years+ - NCT04803539RecruitingPhase 2/Phase 3
ctDNA-guided booster treatment after chemo for triple-negative breast cancer
This trial uses a blood test called ctDNA to see who is at higher risk after surgery and standard chemotherapy for triple-negative breast cancer. If your ctDNA test is positive, you may receive an extra “boost” treatment to help reduce the chance the cancer returns.
Guandong, GuangdongAges 18–80 - NCT07187726Recruiting
Trial to predict arm swelling risk during breast cancer radiation
This trial checks if telling you about your personal risk of arm swelling (based on a computer prediction) helps prevent it. You'll wear a compression sleeve during radiation and be monitored closely.
ArrasAges 18 years+ - NCT04501523RecruitingPhase 2
ctDNA-guided immunotherapy boost after chemotherapy for triple-negative breast cancer
This Phase 2 study checks whether a blood test that looks for cancer DNA (ctDNA) can help decide who should get an extra 12-month immunotherapy treatment after standard chemotherapy and surgery. It may help reduce the chance of the cancer coming back in people with triple-negative breast cancer.
Guandong, GuangdongAges 18–80 - NCT06261918Recruiting
Breast cancer study: linking metabolism to tumor behavior
This study looks at how your metabolism (things like blood sugar and cholesterol) might be linked to tumor genes and growth in people with breast cancer. The goal is to find new ways to treat the disease based on your metabolic profile. You may be eligible if you have locally advanced breast cancer (Stage II–III) and are willing to share your medical records.
RomaAges 18 years+ - NCT05708235RecruitingPhase 2
Blood test monitoring for early breast cancer recurrence
This trial uses a blood test to look for tiny bits of tumor DNA after treatment. If found, participants receive new drug combinations to try to prevent cancer from returning.
A CoruñaAges 18 years+ - 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.
Mobile, AlabamaAges 18–100 - NCT06923527RecruitingPhase 2
Testing ctDNA to start elacestrant in early breast cancer
This trial tests whether the drug elacestrant can help prevent recurrence in people with a type of breast cancer (ER+/HER2-) who have finished hormone therapy and have signs of cancer DNA in their blood (ctDNA positive) but no visible spread on scans.
New Haven, ConnecticutAges 18 years+ - NCT06607757RecruitingPhase 2
Capivasertib plus fulvestrant for high-risk lobular breast cancer
This trial tests adding capivasertib to fulvestrant for women with a certain type of breast cancer (invasive lobular carcinoma) that is hormone-receptor positive and has a high risk of coming back. The treatment is given before surgery to see if it works better than fulvestrant alone.
AugsburgAges 18 years+ - NCT05525767RecruitingPhase 4
Bevacizumab plus chemo before surgery for HER2-negative breast cancer
This trial studies whether adding bevacizumab (an anti-blood-vessel medicine) to chemotherapy before surgery improves treatment outcomes for people with HER2-negative breast cancer. It’s mainly for tumors that are stage II to IIIC and have not had prior cancer treatment.
Shijiazhuang, HebeiAges 18 years+ - NCT06700369Recruiting
Lowering chemo with targeted therapy for HER2+ breast cancer
This study looks at whether using targeted therapy can reduce the amount of chemotherapy needed before surgery for HER2-positive breast cancer. It aims to find a safer, equally effective treatment plan.
Beijing, Beijing MunicipalityAges Any age - NCT07426822RecruitingPhase 2
Preventing Rash and Diarrhea with Capivasertib for Breast Cancer
This trial tests whether giving a combination of the drugs capivasertib and fulvestrant, along with medicines to prevent rash and diarrhea, can help treat hormone receptor-positive breast cancer that has a PIK3CA, AKT1, or PTEN change. It's for people whose cancer has spread or is locally advanced and can't be removed with surgery.
New Haven, ConnecticutAges 18 years+ - NCT05432856Recruiting
Track metabolic health habits during breast cancer treatment
This study follows how “metabolic health” patterns (like eating timing and daily activity) change over time during breast cancer care. It may help researchers learn which habit patterns are linked to better outcomes and comfort during chemotherapy.
Edmonton, AlbertaAges 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.
Birmingham, AlabamaAges 18 years+ - NCT03417622RecruitingPhase 3
Wide vs narrow breast surgery margins after lumpectomy
This study compares two ways of cutting the edge (margin) of tissue during lumpectomy after breast cancer treatment. It may help reduce the chance of the cancer coming back locally by testing whether a wider margin is better than a narrow one.
Al Mansurah, DKAges 18 years+ - NCT03561740RecruitingPhase 3
Capecitabine plus usual treatment for high-risk HER2 breast cancer
This trial looks at whether adding a chemotherapy medicine called capecitabine (taken in smaller, regular doses) to the standard after-surgery (adjuvant) treatment can lower the chance of cancer coming back in people with early-stage, high-risk HER2-positive breast cancer. It targets patients who still had cancer left after earlier treatment or who had higher-risk tumor features.
Guangzhou, GuangdongAges 18–70 - NCT04614194RecruitingPhase 2
Blood and tumor markers to test response to abemaciclib
This trial studies how the immune system and other body signals in blood and tumor tissue relate to how well abemaciclib works before breast cancer surgery. The goal is to learn who benefits most from this medicine and why.
Dallas, TexasAges 18 years+ - NCT04680442RecruitingPhase 2
Keeping HER2 therapy when your heart function is weaker
This trial studies whether it’s safe to continue HER2-targeted breast cancer treatment (like trastuzumab, pertuzumab, or T-DM1) even when heart function (left ventricle) is reduced. It may help people avoid stopping a helpful cancer medicine because of heart concerns.
Porto Alegre, Rio Grande do SulAges Any age - NCT07243002Recruiting
Patient outcomes with ribociclib or abemaciclib for early breast cancer
This study looks at how women and men with stage II or III HR+ HER2- breast cancer do when they start treatment with ribociclib or abemaciclib (combined with hormone therapy) after surgery. Researchers want to understand real-world experiences and results.
LondonAges 18 years+ - NCT05484973Recruiting
Portable scalp cooling to help prevent chemotherapy hair loss
This study tests whether a portable cooling cap system can reduce hair loss for women with breast cancer who are planning certain chemotherapy treatments. It may help you keep more of your hair while you receive chemotherapy.
Tucson, ArizonaAges 21 years+ - NCT05502224Recruiting
Program for ongoing fatigue in young cancer survivors
This study tests a multidisciplinary program to help reduce ongoing fatigue after acute cancer treatment. It is for younger adults who still feel at least moderate fatigue about a month after finishing treatment.
BrusselsAges 18–39 - NCT05725265Recruiting
Low-level laser treatment for arm swelling after breast cancer
This study tests whether low-level laser therapy can safely reduce swelling in one arm caused by breast-cancer treatment. It compares the laser to a look-alike inactive (placebo) treatment and checks changes over time.
TaipeiAges 20 years+ - NCT06165900RecruitingPhase 2
Radiation plus immunotherapy and chemo before surgery for triple-negative breast cancer
This trial tests combining stereotactic radiation therapy with immunotherapy (adebrelimab) and chemotherapy (nab-paclitaxel and carboplatin) before surgery for early or locally advanced triple-negative breast cancer. The goal is to see if this combination improves treatment response.
Shenyang, LiaoningAges 18–75
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Common questions
- Are there clinical trials for breast cancer stage ii?
- Yes. Clin2 currently lists 424 recruiting breast cancer stage ii 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 cancer stage ii 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 cancer stage ii 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
- Breast Cancer Early Stage Breast Cancer (Stage 1-3)
- Breast Cancer (Triple Negative Breast Cancer (TNBC))
- Anatomic Stage IV Breast Cancer AJCC v8
- Anatomic Stage III Breast Cancer AJCC v8
- Anatomic Stage II Breast Cancer AJCC v8
- Anatomic Stage I Breast Cancer AJCC v8
- Early-stage Breast Cancer
- Breast Cancer Stage III
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.