Breast Neoplasms

Researchers are looking for new ways to treat types of breast cancer that are both: * High-risk, which means the cancer may have a higher chance of getting worse or coming back after treatment * Early-stage, which means the cancer is in the breast or the lymph nodes around the breast The 2 types of breast cancer in this study are triple-negative breast cancer (TNBC) and hormone receptor (HR)-low positive/human epidermal growth factor receptor-2 (HER2) negative breast cancer. These cancers have zero or a low amount of a protein called HER2 and other proteins that attach to the hormones estrogen or progesterone. Sacituzumab tirumotecan (also known as sac-TMT or MK-2870), the study medicine, is a type of targeted therapy. A targeted therapy is a treatment that works to control how specific types of cancer cells grow and spread. The main goals of this study are to learn if people who receive sac-TMT, pembrolizumab, and chemotherapy: * Have fewer cancer cells found in the tumors and lymph nodes removed during surgery compared to those who receive only pembrolizumab and chemotherapy * Live longer without the cancer growing, spreading, or coming back compared to people who receive only pembrolizumab with chemotherapy

The purpose of this study is to compare sacituzumab tirumotecan as a single agent, and in combination with pembrolizumab, versus Treatment of Physician's Choice (TPC) in participants with hormone receptor positive/human epidermal growth factor receptor-2 negative (HR+/HER2-) unresectable locally advanced, or metastatic, breast cancer. The primary hypotheses are that sacituzumab tirumotecan as a single agent and sacituzumab tirumotecan plus pembrolizumab are superior to TPC with respect to progression-free survival (PFS) per Response Evaluation Criteria in Solid Tumors version 1.1 (RECIST 1.1) by blinded independent central review (BICR) in all participants.

This study will include two groups of patients: Cohort 1 and Cohort 2. Cohort 1: will help researchers learn how a medicine called imlunestrant (LY3484356) affects a specific type of breast cancer. Some patients will take both imlunestrant and another treatment to suppress their ovarian function. Some will take it without ovarian suppression. Researchers will compare the effects in breast cancer cells to those of another medicine called tamoxifen. All patients in this group will be premenopausal women who have a type of early breast cancer called estrogen receptor-positive, HER2-negative. The treatment in this group will last for up to 29 days. Cohort 2: will help researchers understand how imlunestrant affects the ovaries when it is taken without ovarian suppression. Researchers will compare the effects to those of another medicine called tamoxifen. This group will also include premenopausal women with the same type of breast cancer. The treatment in this group will last for up to 6 months.

The purpose of the study is to assess the efficacy and safety of the addition of Tersolisib (LY4064809/STX-478) to other anti-cancer drugs as first treatment for advanced hormone receptor-positive (HR+)/human epidermal growth factor receptor 2-negative (HER2-) breast cancer. Participants can remain in the study as long as the drug is helping the cancer without unbearable side effects.

This is a multi-site, global, open-label study that includes a phase 1b evaluation of elacestrant in combination with abemaciclib in women and men with brain metastases from estrogen receptor (ER)-positive, human epidermal growth factor receptor-2 (HER-2) negative breast cancer. Phase 1b was designed to select the recommended phase 2 dose (RP2D) and is followed by an ongoing phase 2 evaluation of elacestrant in combination with abemaciclib in participants with active brain metastases from ER-positive, HER-2 negative breast cancer.

This study is a prospective, multicenter non-interventional cohort study designed to develop a registry in unresectable locally advanced or metastatic disease.

The main purpose of this study is to evaluate safety, tolerability, and efficacy of LY4257496 alone and as part of relevant standard of care (SOC) combination therapy in participants with Gastrin-releasing Peptide Receptor (GRPR)-positive advanced cancer, including but not limited to breast, colorectal, prostate, endometrial, esophageal, gastroesophageal (GE) junction, and gastric cancer. The study will also evaluate the safety, tolerability, and efficacy of LY4257529 to identify cancer with high levels of a protein called GRPR. This is a 2-part study. Participation could last up to 36 weeks or until your tumor progresses.

Researchers are looking for other ways to treat breast cancer (BC) that is hormone receptor-positive and human epidermal growth factor receptor 2-negative (HR+/HER2-) and either unresectable locally advanced or metastatic. * HR positive (HR+) means the cancer cells have proteins that attach to estrogen or progesterone (hormones) which help the cancer to grow and spread * HER2 negative (HER2-) means the cancer cells have a low amount of a protein called HER2 * Unresectable locally advanced means the cancer cannot be completely removed by surgery and has spread into nearby tissue or muscles * Metastatic means the cancer has spread to other parts of the body Treatment for this type of breast cancer usually includes endocrine therapy (ET) and sometimes a second treatment. The main goal of this study is to learn if people who receive patritumab deruxtecan (also known as HER3-DXd and MK-1022) live longer overall or without the cancer growing/spreading, compared to people who receive chemotherapy or a different drug called trastuzumab deruxtecan.

BEACON (Benchmarking AI for Clinical Oncology decisioNmaking) is a prospective, multicentre, comparative, blinded, non-interventional benchmark comparing the treatment recommendations of six frontier large language models (LLMs) with those of multidisciplinary tumour boards (RCP) in oncology treatment planning. One hundred standardised synthetic cases (20 per localisation, across breast, lung, urological, digestive and gynaecological cancers) are submitted as identical structured input to two independent tumour boards per localisation and to six frontier LLMs. Every recommendation, human or model, is decomposed into five predefined decision domains (intent, surgery, radiotherapy, systemic therapy with its line, work-up and biomarkers). For each domain, concordance between two recommendations is scored 2 when the same options are selected, 1 when at least one option is shared, and 0 when none is shared; the score is computed automatically from the recommendation forms, without human scoring. The primary endpoint is the mean domain score between each LLM and each tumour board, read against the same score computed between the two tumour boards of the same case, so that humans and models are measured by an identical rule and no respondent contributes to its own reference. A co-primary safety endpoint captures the proportion of recommendations carrying serious harm potential, because concordance alone can conceal dangerous errors. Where the two boards select different options, the case-domain is classified EQUIPOISE and, like every discordance, is adjudicated by an independent panel blinded to the source of the recommendation. Tumour boards record their recommendations during the meeting itself, on a dedicated platform (https://etude-beacon.fr) that reveals a case only once it is presented and time-stamps that reveal, so that no board can read a case in advance. BEACON is designed as reusable, openly licensed, pre-registered infrastructure: all synthetic cases, evaluation rubrics, scoring algorithms, verbatim prompts and raw model outputs are released for full reproducibility.

This is a Phase III trial where participants will be randomized to two treatment groups, which means participants will be assigned by equal chance to a treatment group. This trial will be double-blinded, which means neither the participants nor the trial doctors will know which of the two treatments the participants actually receive. Participants will receive either the trial drug with chemotherapy or placebo (which looks like the trial drug but does not have any drug in it) with chemotherapy.

Researchers want to learn if patritumab deruxtecan (MK-1022) can treat certain breast cancers. The breast cancers being studied are HER2 positive unresectable locally advanced or metastatic (the cancer has spread to other parts of the body). The goals of this study are to learn: * About the safety and how well people tolerate of patritumab deruxtecan * How many people have the cancer respond (get smaller or go away) to treatment

This first-in-human, open-label, multicenter study evaluates K-1728 administered as monotherapy and in combination in participants with advanced or metastatic solid tumors. The study assesses the safety, tolerability, pharmacokinetics, and preliminary antitumor activity of K-1728.

This is a multicenter, prospective, randomized parallel controlled two arm clinical trial, designed to systematically evaluate impact of robotic versus endoscopic surgery on breast nerve function in patients undergoing nipple sparing mastectomy for breast cancer. The study will comprehensively assess the neurological functional outcomes, oncological safety, quality of life and sexual health, perioperative efficacy, surgical complications, and health economic value of the two minimally invasive approaches. This study has been approved by the Institutional Review Board of the Affiliated Women and Children's Medical Center of Guangzhou Medical University. Written informed consent will be obtained from all eligible participants prior to enrollment. All patient data will be anonymized and kept strictly confidential. Statistical analyses will be performed using SPSS 27.0 software, with a P value \< 0.05 set as the threshold for statistical significance.

Breast cancer is the most common cancer in women worldwide. Its molecular classification, based on hormone receptors (estrogen and progesterone), HER2 and Ki-67, defines subtypes with different prognoses and treatments. In Colombia, there is limited information that integrates the clinical, treatment, sociodemographic and contextual characteristics of each subtype, and limited data on the direct medical costs of breast cancer care. This retrospective cohort study will review the medical records of women 18 years or older with biopsy-confirmed breast cancer and a documented molecular subtype who were treated at Fundación Santa Fe de Bogotá (Bogotá, Colombia) between January 1, 2014 and December 31, 2024. It will describe each molecular subtype (luminal A, luminal B HER2-negative, luminal B HER2-positive, HER2-enriched, triple-negative and HER2-low) and evaluate the association of clinical, molecular and treatment characteristics with overall survival, progression-free survival, recurrence, treatment response and grade 3-4 adverse events. It will also explore the impact of the COVID-19 pandemic and health insurance regimen on outcomes, and estimate direct medical costs of breast cancer care by clinical stage and phase of care. The investigators will not assign or modify any treatment.

The goal of this clinical trial is to learn whether Chinese herbal acupoint application, when added to standard three-drug anti-nausea treatment, can prevent nausea and vomiting caused by chemotherapy in people with breast cancer. The study will also evaluate the safety of the Chinese herbal acupoint application. The main questions it aims to answer are: * Does Chinese herbal acupoint application help participants have less nausea during the first 5 days after chemotherapy? * Does it reduce vomiting and the need for additional anti-nausea medicine? * Does it affect the impact of chemotherapy-related nausea and vomiting on daily life? * What medical problems or side effects occur with the Chinese herbal acupoint application? Researchers will compare Chinese herbal acupoint application with a sham application. Both groups will receive standard three-drug anti-nausea treatment. The sham application looks and feels similar to the herbal application but does not contain the active herbal ingredients. Participants will: * Receive one cycle of planned chemotherapy and standard three-drug anti-nausea treatment. * Receive either the Chinese herbal acupoint application or sham application before chemotherapy. The application will be placed on selected acupuncture points for 4 to 6 hours. * Record nausea, vomiting, and use of additional anti-nausea medicine during the first 5 days after chemotherapy. * Complete a questionnaire about how nausea and vomiting affect daily life. * Have safety follow-up for about 2 weeks after chemotherapy.

The goal of this observational study is to learn how the lymphatic system changes before and after radiotherapy in female patients with breast cancer. The study aims to understand early lymphatic changes that may lead to breast-cancer-related lymphedema (BCRL) and to help identify patients who might benefit from early preventive rehabilitation. The main questions it aims to answer are: How does lymphatic flow and vessel function change after radiotherapy, as measured by indocyanine green (ICG) lymphography? Can early imaging changes on ICG lymphography predict later swelling or lymphedema symptoms in the arm? There is no comparison or treatment group, since all participants will receive radiotherapy as part of their standard breast cancer care. Participants will: Undergo ICG lymphography before radiotherapy and again within 4-6 weeks after completing radiotherapy Receive a small injection of ICG dye under the skin and have near-infrared imaging to visualize lymphatic flow Complete follow-up assessments (for some participants) at 3, 6, or 12 months to monitor long-term lymphatic changes Continue their usual standard medical and rehabilitation care throughout the study This study will include 40 female participants, aged 18 years or older, who have been diagnosed with stage I-III breast cancer and are scheduled for postoperative radiotherapy. Participants with a history of lymphedema, prior radiotherapy, severe organ disease, or known ICG/iodine allergy will not be included. The information collected will include imaging findings from ICG lymphography, arm circumference and volume measurements, and patient-reported outcomes on arm discomfort or swelling. These data will help researchers identify early imaging biomarkers of radiation-induced lymphatic dysfunction. The study does not involve any experimental treatment or random assignment. All procedures are routine diagnostic or rehabilitation methods that are already approved for clinical use. The ICG test uses a very small amount of dye and is considered safe, with allergic reactions being rare. The findings of this study may provide new insights into how radiotherapy affects the lymphatic system and may contribute to developing personalized strategies to prevent or minimize lymphedema after breast cancer treatment.

This multicenter, cluster randomized trial will evaluate whether community-based breast ultrasound screening improves the early detection of breast cancer in women aged 65 to 80 years, compared with routine health management. Approximately 80,000 women in Jiangsu Province, China, will be enrolled and followed for breast cancer outcomes.

This study investigates the effects of two different online yoga interventions on the health-related quality of life in breast cancer patients. Qualitative and quantitative data will be collected.

This study aims to develop and validate an artificial intelligence (AI)-based predictive model to estimate the risk of incident onset of five major diseases or conditions: cardiovascular disease, type 2 diabetes mellitus, breast cancer, low back pain, and osteoarthritis, in adults aged 30 to 65 years. For each participant, an index date will be defined as the date of a prior health screening or another protocol-defined baseline clinical date. Incident disease status for each target disease or condition will be ascertained by retrospective review of electronic medical records for up to 10 years after the index date. The study integrates retrospective clinical, health screening, laboratory, imaging, and electronic medical record data with prospectively collected biospecimen, proteomic, genomic, questionnaire, lifestyle, and digital health data. Prospective study procedures will be completed over approximately 1 week, with up to 2 additional weeks if needed. By combining multimodal data, this study seeks to improve disease risk prediction and to identify clinical and biological factors associated with disease onset, ultimately supporting personalized risk stratification and preventive healthcare strategies.

This is a study of LY4337713 in participants with certain types of cancer that is advanced or has spread. Participants must have cancer with high levels of a protein called fibroblast activation protein (FAP). The purpose of this study is to evaluate safety, side effects, and efficacy of LY4337713. In addition, this study will evaluate how much LY4337713 gets into the bloodstream, how it is broken down, and how long it takes the body to get rid of it. For each participant, the study will last about 5 years.

The goal of the proposed study is to conduct a pilot randomized controlled trial (RCT) of Chi gung, a community-based intervention using peer education and tailored navigation to simultaneously improve colorectal (CRC) and breast cancer (BC) screening rates.

The purpose of this study is to evaluate the efficacy and safety of ctDNA-guided initiation of CDK4/6 inhibitor therapy using the Signatera™ Designed on Genome test (referred to as "Signatera Genome") in participants with intermediate-risk HR+/HER2- early-stage breast cancer. Based on ctDNA test results, participants will either start CDK4/6 inhibitor therapy in addition to hormone therapy or continue hormone therapy with ongoing ctDNA surveillance. This study will compare outcomes to historical controls from the NataLEE trial to determine whether ctDNA-guided timing maintains efficacy while reducing unnecessary treatment. Participants will be followed for up to 9 years with regular blood draws, hormone therapy, imaging as needed, and quality-of-life assessments.

The purpose of this study is to understand why different people have different risks and outcomes for breast cancer and non-breast cancer.

AUDIBLE is a multi-site, clinical study conducted in the United States aimed at gathering data on 3D Automated Breast Ultrasound imaging using the iSono Health ATUSA system. The study focuses on female participants who have previously been identified with suspicious findings (classified as BIRADs 4 or 5) through standard-of-care diagnostic imaging methods (e.g., hand-held ultrasound, mammograms) and who have been referred for a biopsy. The goal is to create a comprehensive registry that includes multi-modality breast images alongside and biopsy results. The study will enroll up to 800 eligible female patients. In addition to imaging data, the study will collect information from the patient's medical records and biopsy outcomes. The study aims to validate ATUSA's image quality, reproducibility, and correlation with histopathology and radiologist-assigned BI-RADS categories. Additionally, a subset of participants receiving neoadjuvant therapy will be followed longitudinally to evaluate ATUSA's potential for monitoring treatment response and volumetric changes in tumor burden. This study supports the advancement of a patient-friendly, radiation-free, operator-independent ultrasound platform for real-time breast imaging.

The goal of this clinical trial is to learn whether a 12-week dance-based exercise program can reduce cancer-related fatigue in women with newly diagnosed breast cancer who are undergoing treatment before surgery. The main questions it aims to answer are: Does participating in the dance-based exercise program reduce cancer-related fatigue? Does the program improve quality of life and physical functioning? Researchers will compare women who participate in the dance-based exercise program in addition to their standard cancer care with women who receive standard cancer care alone. Participants in the dance group will take part in supervised 60-minute dance sessions three times per week for 12 weeks. All participants will complete questionnaires and undergo assessments of physical fitness and body composition. Blood and stool samples will also be collected to study changes in the gut microbiome and selected biological markers. Participants will be followed for up to one year after surgery.