223 Clinical Trials for Various Conditions
This phase II trial studies the performance, including ultrasound visibility, of an optimized ultrasound twinkling marker in imaging lymph nodes in patients with clinically node-positive breast cancer. In patients with biopsy-proven breast cancer, biopsy markers are used to identify the sites of cancer involvement in both the breasts and lymph nodes. These biopsy markers are critical for guiding surgical management many months after the marker is placed. For breast radiologists and breast surgeons, there is a need for simple, consistent visibility of biopsy markers by ultrasound, particularly several months after marker placement. Ultrasound is the imaging method of choice, particularly for lymph nodes in the armpit (axilla). Ultrasound is non-ionizing and is more comfortable for patients compared to mammography. However, ultrasound visibility of these markers is challenging and inconsistent, with ultrasound failing to detect the marker approximately 25% of the time. The Mayo-designed investigational biopsy marker takes advantage of an ultrasound phenomenon called twinkling artifact. The Mayo-designed optimized ultrasound twinkling marker may work better than standard biopsy clip marker in imaging lymph nodes in patients with clinically node-positive breast cancer.
This clinical trial tests how well ultra-hypofractionated (UF) whole breast irradiation (WBI) with lumpectomy cavity boost (CB) works in treating patients with stage I-III breast cancer. Breast conservation therapy (BCT) is the recommended treatment for patients with early stage breast cancer. BCT involves a lumpectomy followed by breast radiation. Radiation therapy uses high energy x-rays, particles, or radioactive seeds to kill tumor cells and shrink tumors. Traditionally, WBI has been given once daily over 5-6 weeks and then those at high-risk for recurrence receive additional radiation (boost) to the lumpectomy cavity daily over 4-8 days. This has now been replaced by moderate hypofractionated radiation. Hypofractionated radiation therapy delivers higher doses of radiation therapy over a shorter period of time and may kill more tumor cells and have fewer side effects. Although moderate hypofractionated radiation therapy reduces the length of treatment from 6-7 weeks to 3-4 weeks, the length of treatment still remains a barrier for many patients. UF-WBI with CB delivers radiation to the whole breast and the surgical cavity at the same time over 5 daily treatments. Giving UF-WBI with CB may prevent recurrence and prolong survival as well as improve the quality of life in patients with stage I-III breast cancer.
This phase II trial tests how well craniospinal irradiation (CSI) using photon volumetric modulated arc radiotherapy (VMAT) works in treating patients with breast cancer or non-small cell lung cancer (NSCLC) that has spread from the original (primary) tumor to the cerebrospinal fluid and meninges (thin layers of tissue that cover and protect the brain and spinal cord) (leptomeningeal disease). Radiation therapy uses high energy x-rays, particles, or radioactive seeds to kill cancer cells and shrink tumors. CSI (radiation therapy directed at the brain and spinal cord to kill tumor cells) may be able to target all of the areas of possible leptomeningeal tumor spread. Photon-VMAT-CSI may be an effective treatment option for patients with leptomeningeal disease secondary to breast cancer or NSCLC.
This phase II trial tests how well cemiplimab and transarterial radioembolization (TARE) with yttrium-90 (Y90) SIR-Spheres, registered trademark, works in treating breast cancer that has spread from where it first started (primary site) to the liver (metastatic). Immunotherapy with monoclonal antibodies, such as cemiplimab, may help the body's immune system attack the tumor, and may interfere with the ability of tumor cells to grow and spread. TARE is a treatment that uses radioactive microspheres, such as Y90 SIR-S Spheres, to both cause hepatic artery embolization and to deliver regional radiotherapy. Y90 SIR-S Spheres is an injectable form of the radioisotope yttrium Y 90 encapsulated in resin microspheres. When injected into the artery supplying the tumor, yttrium Y 90 resin microspheres block the tumor blood vessels and deliver the yttrium Y 90 directly to the tumor site, which may kill or slow tumor growth. Giving cemiplimab and Y90 SIR-Spheres by TARE to the tumor in the liver may kill more tumor cells in patients with metastatic breast cancer.
This clinical trial evaluates a digital health intervention for improving symptoms and physical activity among patients with breast cancer undergoing radiation. Cancer-related fatigue is common and strongly associated with quality of life during and after treatment. Increasing emphasis on early symptom detection and management has prompted initiatives to collect patient-reported fatigue from all patients during treatment. Mind-body interventions including physical activity and yoga are recommendations to treat fatigue and comorbid (coexisting) symptoms. Lower socioeconomic status has not only been associated with higher rates of physical inactivity but also with perceptions that it could negatively impact fatigue and quality of life during treatment. A virtual mind-body program called Integrative Medicine at Home (IM@Home) includes cardio fitness and yoga classes in a bundled intervention that has demonstrated decreased fatigue, depression, insomnia, and symptom distress among patients undergoing breast radiation. The IM@Home program may also increase physical activity among patients with breast cancer undergoing radiation.
This phase III trial evaluates how often women develop insulin resistance and type-2 diabetes and compares metformin with usual care to usual care alone in treating insulin resistance in women with stage I-III breast cancer after chemotherapy. Insulin resistance occurs when cells stop responding to insulin and is a risk factor for developing diabetes and heart disease. Higher levels of insulin have been shown to be associated with aggressive breast cancer. Metformin hydrochloride decreases the amount of glucose (a type of sugar) released into the bloodstream from the liver and increases the body's use of the glucose. Metformin as well as standard of care diet and exercise education is known to lower blood sugar. However, chemotherapy may accelerate metabolic disorders, such as high blood sugar, and the impact of metformin in these breast cancer survivors is not known. Giving metformin with usual care may be more effective than usual care alone in preventing or reversing insulin resistance in women with stage I-III breast cancer after chemotherapy.
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, prevent the formation of estradiol, a female hormone, by interfering with an aromatase enzyme. Aromatase inhibitors are used as a type of hormone therapy to treat postmenopausal women with hormone-dependent breast cancer. Giving low dose tamoxifen may be more effective compared to usual hormone therapy in treating post-menopausal women with hormone-positive, HER2 negative early stage breast cancer.
This trial tests how well a remotely-delivered nutrition and culinary intervention works to improve diet quality among stage I-III breast cancer survivors. Despite the strong evidence demonstrating the benefits of healthy nutrition on improving cancer outcomes, most breast cancer survivors, do not meet the nutrition recommendations The use of technology in behavioral interventions is proving to be a cost-effective mode of delivering lifestyle education to promote behavior change. The Mindfulness Intervention for Nutrition in the Digital Kitchen (MIND) program is delivered through a learning management system on the Cook for Your Life platform (cookforyourlife.org). The Cook for Your Life platform is a cancer patient-facing interactive program offering free nutrition and healthy cooking information, recipes, and cooking videos that disseminate evidence-based information on nutrition and cancer survivorship. The MIND program may help improve diet quality and increase fruit and vegetable intake among stage I-III breast cancer survivors.
This phase II trial studies how well hypofractionated radiotherapy before (preoperative) or after (postoperative) breast surgery works in treating patients with different types of non-metastatic (has not spread from original tumor site) breast cancer and to determine the outcomes and side effects of this treatment. Radiation therapy is considered an integral part of breast conserving therapy. Hypofractionated radiation therapy is a radiation treatment in which the total dose of radiation is divided into large doses and treatments are given less than once a day. This has been shown to be an effective treatment for breast cancer while reducing treatment time and decreasing side effects. Preoperative radiotherapy alone or concurrently with chemotherapy has also been tested with excellent results and with minimal toxicity. Preoperative radiation of the intact tumor with a hypofractionated regimen can potentially decrease toxicity by allowing the delivery of treatment to intact breast tissue. The potential advantages of preoperative radiation therapy include the delivery of radiation in the intact breast when radiation can be more effective as more oxygen can be available in the tissue. Furthermore, complications and cosmetic results are expected to be lower in pre-operative radiotherapy before surgery, as there have been no changes in blood supply to the breast. This lends to the possibility of using lower doses of radiotherapy to patients, and potentially better cancer associated clinical outcomes for our breast cancer patients. Undergoing hypofractionated radiation therapy before or after breast surgery may be safe and effective in treating patients with different types of non-metastatic breast cancer.
This clinical trial is a two-arm pilot randomized controlled trial for non-metastatic breast cancer survivors to determine the feasibility, acceptability, and fidelity of two integrative health approaches and study design in a multi-site setting. Participants (n=104) will be randomized to either the Ayurveda Intervention (AVI) or Facing Forward Health Education Intervention (FFHEI). Integrative health combines biomedical and complementary approaches together in a coordinated way. AVI, a multi-modal intervention, includes nutritional education, lifestyle practices, yoga, and therapeutic touch, called marma, to help the body and mind feel balanced. FFHEI provides health education using self-directed online content and interactive videos based on the latest science in cancer survivorship. This study does not intend to conduct tests of efficacy and is focused on feasibility outcomes.
This phase II trial tests how well fezolinetant works in improving vasomotor symptoms (VMS) in breast cancer patients taking endocrine therapy (ET). Anti-hormone treatments are effective for lowering the risk of breast cancer but can cause bothersome VMS, such as hot flashes and night sweats. Fezolinetant inhibits the activity of the neurokinin type 3 receptor and has shown activity against VMS in postmenopausal women. Taking fezolinetant may work well at improving VMS in breast cancer patients taking ET.
This phase I/Ib trial tests the safety, side effects, best dose, and effectiveness of ASTX660 (tolinapant) in combination with eribulin mesylate (eribulin) in treating patients with triple negative breast cancer that cannot be removed by surgery (unresectable) or that has spread to nearby tissues or lymph nodes (locally advanced) or to other places in the body (metastatic). Tolinapant may stop the growth of tumor cells by blocking proteins, such as XIAP and cIAP1, needed for tumor cell survival. Chemotherapy drugs, such as eribulin, work in different ways to stop the growth of tumor cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. Giving tolinapant in combination with eribulin may be safe, tolerable, and/or effective in treating patients with unresectable, locally advanced, or metastatic triple negative breast cancer.
The goal of this randomized clinical trial is to learn if a healthy eating pattern called the MIND eating plan can reduce cancer-related cognitive impairment (commonly called "chemobrain") and other symptoms commonly experienced by women with newly diagnosed stage II-III triple negative breast cancer as they go through chemotherapy. The symptoms that will be measured include changes in memory and mental function, fatigue, sleep quality, anxiety, and depression. Researchers will compare measures from women in the 12-week MIND eating plan virtual intervention to a general health coaching (GHC) virtual intervention to see if the MIND eating plan helps reduce symptoms. Women will be contacted for follow-up measures 6 months after the 12-week interventions. Women randomly assigned to the GHC at the beginning of the study will have the opportunity to complete the MIND intervention after the 6-month follow-up. All study sessions and measures are done remotely. Participants will: * Be randomized to MIND or GHC interventions * Complete all study measures remotely (by online questionnaires, virtual visits and mail ) * Attend 8 virtual sessions of about 15-60 minutes each over 12 weeks * Be sent some of the key foods in the MIND eating plan during the MIND intervention * Be contacted for follow-up measures 6 months after interventions
This clinical trial assesses whether using a test developed by DiviTum can identify optimal levels of CDK 4/6 inhibitor medications in the blood and whether assessing medical compliance and drug-drug interactions can optimize (improve) these levels in patients with estrogen receptor (ER) or progesterone receptor (PR) positive, and human epidermal growth factor receptor 2 (HER2)-negative breast cancer that has spread from where it first started (primary site) to other places in the body (metastatic) and are receiving CDK 4/6 inhibitors. CDK4/6 inhibitors in combination with endocrine therapy (ET) is first line treatment for metastatic hormone positive (ER/PR positive) breast cancer (mBC). Thymidine kinase is a biomarker (biological molecule found in blood, other body fluids, or tissues that is a sign of a condition or disease) that reflects cell proliferation (an increase in the number of cells as a result of cell growth and cell division). DiviTum-thymidine kinase activity (TKa) is a Food and Drug Administration approved assay which showed that a TKa is associated with the decreased likelihood of disease progression within 30 days or 60 days post testing. Using the DiviTum-TKa may improve medication compliance and remove potential drug-drug interactions in patients with ER/PR positive HER2-negative MBC.
This phase II trial tests the effectiveness of cannabidiol (CBD) plant extract (BRC-001) in improving joint stiffness and pain (arthralgia) in women with breast cancer taking aromatase inhibitors (AIs). AIs lower blood levels of estrogen in postmenopausal women to reduce breast cancer recurrence. Women on AI therapy may experience joint stiffness, pain and arthritis symptoms as a side effect of the medication. Some women stop AI therapy due to these side effects and do not receive the maximum benefit from the medication. CBD is derived from the same plant family as marijuana but is not associated with a "high" or mind-altering effect and is not habit-forming. Research in animals and humans indicates that CBD might decrease inflammation in joint tissues and may help reduce chronic pain in ailments such as arthritis. BRC-001 may reduce joint pain in women with breast cancer taking AIs.
This clinical trial evaluates if in-person acupuncture or virtual acupressure therapy prevents aromatase inhibitor-associated joint pain in Non-Hispanic Black postmenopausal women with stage I-III (early-stage) hormone receptor positive (HR+) breast cancer. Aromatase inhibitors (AI) are medications that prevent the formation of the hormone estrogen. They are used in the treatment of postmenopausal women who have hormone-dependent breast cancer. AI therapy prolongs life among patients with early-stage HR+ breast cancer. Many postmenopausal women stop AI therapy early due to debilitating joint pain (arthralgias). Non-Hispanic Black women are more likely to experience side effects and stop their hormonal therapy compared to Non-Hispanic white women. Acupuncture therapy involves inserting thin needles through the skin at specific points on the body to control pain. Acupressure therapy uses the application of pressure or localized massage to specific sites on the body to control symptoms such as pain. Acupuncture and acupressure are types of complementary and alternative medicine. Undergoing in-person acupuncture or participating in virtual acupressure may prevent AI-associated arthralgias (AIAA) in Non-Hispanic Black postmenopausal women with early-stage HR+ breast cancer.
This phase II trial evaluates the effect of capecitabine on tumor response using imaging and tumor markers to adjust dose (adaptive therapy) in patients with estrogen receptor (ER) positive, HER2 negative breast cancer that has spread from where it first started to other areas in the body (metastatic). Capecitabine is in a class of medications called antimetabolites. It is taken up by tumor cells and breaks down into fluorouracil, a substance that kills tumor cells. Adaptive therapy with capecitabine based on tumor burden response may slow or stop the growth of tumor cells in patients with metastatic ER positive, HER2 negative breast cancer.
This phase II clinical trial studies how well craniospinal irradiation (CSI) with hippocampal avoidance, using proton therapy or volumetric modulated arc therapy (VMAT), works in treating patients with breast cancer or non-small cell lung cancer (NSCLC) that has spread from the original (primary) tumor to the cerebrospinal fluid (CSF) and meninges (thin layers of tissue that cover and protect the brain and spinal cord) (leptomeningeal metastases). Radiation therapy is an effective treatment in relieving localized symptoms caused by leptomeningeal metastases. However, the type of radiation therapy typically used does not prevent the spread of leptomeningeal disease. CSI (radiation therapy directed at the brain and spinal cord to kill tumor cells) may be able to target all of the areas of possible leptomeningeal tumor spread. CSI may however result in significant neurological side effects due to radiation damage to a part of the brain called the hippocampus. Hippocampal avoidance (HA) reduces the amount of radiation to the hippocampus. Proton or VMAT CSI with HA may be an effective treatment while reducing neurological side effects for patients with leptomeningeal metastases from breast cancer and NSCLC.
This clinical trial studies how well fluorine F 18 fluorthanatrace (\[18F\]FTT) positron emission tomography (PET) works in imaging patients with breast cancer that has spread from where it first started (primary site) to other places in the body (metastatic) who are receiving standard of care (SOC) poly (ADP-ribose) polymerase (PARP) inhibitors with or without immune checkpoint inhibitors (ICI) to be able to detect clinical response to PARP inhibitor ± ICI treatment. \[18F\]FTT is a radiotracer that targets and binds to PARP1 which can potentially be used for the imaging of PARP1 expression using PET. Once administered, \[18F\]FTT targets and binds to PARP1. Upon PET, PARP1-expressing tumor cells can be visualized. PET is an established imaging technique that utilizes small amounts of radioactivity attached to very minimal amounts of tracer, in the case, \[18F\]FTT. Because some cancers take up \[18F\]FTT it can be seen with PET. PARP inhibitors work as a targeted therapy by blocking an enzyme involved in repairing cell damage. It may cause tumor cells to die. ICI may help the body's immune system attack the cancer and may interfere with the ability of tumor cells to grow and spread. Combining \[18F\]FTT with a PET scan may help detect tumor cells better in patients with metastatic breast cancer who are receiving standard of care PARP inhibitors with our without ICI treatment.
This clinical trial evaluates the impact of a tailored physical activity program on physical activity in patients with breast cancer that has spread from where it first started to other places in the body (metastatic). It has been shown that decreased physical activity contributes to poor performance and quality of life. Evidence has also shown that exercise could improve physical fitness, physical functioning, quality of life, and cancer-related fatigue, however, there is concern that it may not be available to those with physical limitations. The proposed physical activity program offers a comprehensive and individualized assessment for each metastatic breast cancer patient and includes a high quality, tailored exercise home-based program designed by an advanced qualified cancer exercise specialist. A tailored physical activity program may improve physical activity in metastatic breast cancer patients.
This phase III trial compares proton craniospinal irradiation (pCSI) to involved-field radiation therapy (IFRT) for the treatment of breast or non-small cell lung cancer that has spread from where it first started to the cerebrospinal fluid filled space that surrounds the brain and spinal cord (leptomeningeal metastasis). Patients with leptomeningeal metastasis (LM) may develop multiple areas of nervous system (neurologic) impairment that can be life-threatening. Radiation therapy (RT) effectively relieves local symptoms due to LM. RT uses high energy radiography (x-rays), particles, or radioactive seeds to kill cancer cells and shrink tumors. IFRT is commonly used to treat symptoms of LM. IFRT is radiation treatment that uses x-rays to treat specific areas of LM and to relieve and/or prevent symptoms. pCSI uses protons that can be directed with more accuracy than x-rays which allows treatment of the entire central nervous system space containing the cerebrospinal fluid (CSF), brain, and spinal cord. The pCSI treatment could delay the worsening of LM. Giving pCSI may be better than IFRT in treating LM in patients with breast or non-small cell lung cancer.
This phase III trial compares the effectiveness of fractionated stereotactic radiosurgery (FSRS) to usual care stereotactic radiosurgery (SRS) in treating patients with cancer that has spread from where it first started to the brain. Radiation therapy uses high energy x-rays to kill tumor cells and shrink tumors. FSRS delivers a high dose of radiation to the tumor over 3 treatments. SRS is a type of external radiation therapy that uses special equipment to position the patient and precisely give a single large dose of radiation to a tumor. FSRS may be more effective compared to SRS in treating patients with cancer that has spread to the brain.
This phase II trial tests how well radiation therapy with pembrolizumab and chemotherapy (paclitaxel or nab-paclitaxel or carboplatin and gemcitabine) works in treating patients with PD-L1 positive triple negative breast cancer that has spread from where it first started (primary site) to other places in the body (metastatic). Radiation therapy uses high energy x-rays, particles, or radioactive seeds to kill tumor cells and shrink tumors. Immunotherapy with monoclonal antibodies, such as pembrolizumab, may help the body's immune system attack the tumor, and may interfere with the ability of tumor cells to grow and spread. Paclitaxel is in a class of medications called antimicrotubule agents. It stops cancer cells from growing and dividing and may kill them. Nab-paclitaxel is an albumin-stabilized nanoparticle formulation of paclitaxel which may have fewer side effects and work better than other forms of paclitaxel. Carboplatin is in a class of medications known as platinum-containing compounds. It works by killing, stopping or slowing the growth of cancer cells. Gemcitabine is a chemotherapy drug that blocks the cells from making DNA and may kill cancer cells. High dose radiation therapy with pembrolizumab and chemotherapy may effective in treating patients with PD-L1 positive metastatic triple negative breast cancer.
This phase II trial tests how well tamoxifen and pegylated liposomal doxorubicin works in treating patients with triple negative breast cancer that has spread from where it first started (primary site) to other places in the body (metastatic) or that has spread to nearby tissue or lymph nodes (locally advanced) and is unable to be operated on (inoperable). Tamoxifen works by blocking the effects of estrogen in the breast. This may help stop the growth of tumor cells that need estrogen to grow. Doxorubicin is in a class of medications called anthracyclines. Doxorubicin damages the cell's DNA and may kill cancer cells. It also blocks a certain enzyme needed for cell division and DNA repair. Liposomal doxorubicin is a form of the anticancer drug doxorubicin that is contained inside very tiny, fat-like particles. Liposomal doxorubicin may have fewer side effects and work better than other forms of the drug. Giving tamoxifen and pegylated liposomal doxorubicin together may work better in treating patients with metastatic or inoperable, locally advanced triple negative breast cancer than giving either of these drugs alone.
This study evaluates changes in skin quality and self-esteem among breast cancer patients who are initiating aromatase inhibitor therapy.
This clinical trial evaluates the effect of conversational agent, Cecebot, on improving insomnia in stage I-III breast cancer survivors. Sleep disturbance ranks among the top concerns reported by breast cancer survivors and is associated with poor quality of life. Many breast cancer survivors also have decreased physical activity, which may also have a negative impact on sleep and quality of life. Cognitive behavioral therapy for insomnia (CBTi) and physical activity interventions have individually been reported to improve sleep and to have a positive impact on quality of life. Cecebot is a personalized short messaging service (SMS)-based behavioral intervention that combines CBTi and physical activity strategies that may improve sleep for breast cancer survivors.
This phase I trial tests the safety, side effects, and best dose of a personalized vaccine (tumor membrane vesicle or TMV vaccine) by itself and in combination with checkpoint inhibitor (pembrolizumab or ipilimumab) in treating patients with triple negative breast cancer. This vaccine is made by taking a piece of patient's triple negative breast cancer to design a vaccine to stimulate the immune system's memory. Patients are treated with the personalized vaccine immunotherapy with or without monoclonal antibodies, such as pembrolizumab and ipilimumab. This approach may help the body's immune system attack the cancer, and may interfere with the ability of tumor cells to grow and spread. Giving personalized TMV vaccine with pembrolizumab or ipilimumab may help the immune system attack cancer better and reduce the risk of this breast cancer coming back or growing.
This clinical trial tests the effectiveness of an interactive time-restricted diet intervention (txt4fasting) in reducing neurocognitive decline and improving survival outcomes after stereotactic radiosurgery in patients with breast or lung cancer that has spread to the brain (brain metastases). Lung cancer and breast cancer are the two most frequent causes of brain metastases. The diagnosis of brain metastases is associated with poorer survival and tumor-induced and treatment-related side effects. Stereotactic radiosurgery is a type of external radiation therapy that uses special equipment to position the patient and precisely give a single large dose of radiation to a tumor. Patients who receive stereotactic radiosurgery for brain metastases may experience less neurocognitive side effects than with other types of brain radiation, but may still be at risk for their brain metastases growing, spreading, or getting worse. Patients with obesity and diabetes have been shown to have worse survival and increased radiation-related side effects. Evidence demonstrates that simply changing meal timing can have a positive impact on multiple health outcomes. Time-restricted eating, or prolonged nighttime fasting, has been proven to have positive effects on heart disease risk reduction, weight control management and chemotherapy side effect reduction. Txt4fasting may be effective in decreasing neurocognitive decline and improving survival outcomes in patients undergoing stereotactic radiosurgery for brain metastases from breast or lung cancer.
This phase II trial evaluates manual lymphatic drainage breast massage for reducing treatment-related side effects in women undergoing radiation therapy after breast conserving surgery for breast cancer that has not spread to other parts of the body (localized). Breast conserving surgery can be an effective treatment option for early stage breast cancer, but it can also be associated with side effects including fluid collection in tissues/swelling (lymphedema), pain, reduced quality of life, and poorer body image. Manual lymphatic drainage is a gentle massage technique used to reduce swelling. It may be a safe and effective way to reduce treatment-related side effects in women receiving radiation therapy after surgery for localized breast cancer.
This phase II trial tests how well stereotactic body radiation therapy (SBRT) works in treating patients with estrogen receptor positive (ER +) breast cancer that has spread from where it first started to other places in the body (metastatic) and has limited disease progression (oligoprogression). Currently, the standard of care for breast cancer patients with oligoprogressive disease is to change systemic therapy when progression occurs. Radiation therapy uses high energy x-rays, particles, or radioactive seeds to kill cancer cells and shrink tumors. SBRT is a type of external radiation therapy that uses special equipment to position a patient and precisely deliver radiation to tumors in the body (except the brain). The total dose of radiation is divided into smaller doses (fractions) given over several days. This type of radiation therapy helps spare normal tissue and has been shown to improve survival. SBRT may kill more tumor cells and allow patients with oligoprogressive ER + metastatic breast cancer to continue taking current systemic treatment. This trial also tests how well ER targeted positron emission tomography (PET)/ computed tomography (CT) imaging, using FES, works in identifying progressive disease in patients with ER + metastatic breast cancer. FES, a radiolabeled substance, binds to estrogen receptors and gives off radiation that can be detected by a PET scan. The PET scan, an established imaging technique that utilizes small amounts of radioactivity attached to very minimal amounts of tracer, FES, forms an image that shows where tumor cells with estrogen receptors can be found in the body. CT images use x-rays to provide an exact outline of organs. FES PET/CT may improve identification of progressive disease in patients with ER + metastatic breast cancer.