Dunmore

Researchers are evaluating whether breast conservation surgery combined with endocrine therapy can achieve a similar rate of invasive or non-invasive ipsilateral breast tumor recurrence (IBTR) compared to breast conservation surgery followed by breast radiation and endocrine therapy in patients with Stage I, hormone sensitive, HER2-negative breast cancer with an Oncotype recurrence score of 18 or less. This Phase III trial builds on the established role of radiation after lumpectomy, aiming to identify if radiation can be safely omitted in certain low-risk patients to reduce treatment burden and side effects. Participants receive either breast radiation plus endocrine therapy or endocrine therapy alone. Radiation therapy involves external beam radiation to the whole breast with or without a boost, partial breast irradiation, or accelerated partial breast irradiation, starting within 12 weeks after the last breast surgery. Endocrine therapy is given for a minimum of 5 years, with the specific drug choice and schedule determined by the treating physician. Endocrine therapy may begin before, during, or after radiation therapy, depending on the treatment group. Throughout the study, participants undergo regular assessments including imaging such as mammograms or MRI within six months before enrollment, and clinical evaluations to monitor tumor recurrence. The main outcome measured is the time to invasive or non-invasive ipsilateral breast tumor recurrence over five years. Safety, adherence to therapy, and recovery from surgery are also monitored. The total participation period includes at least five years to evaluate long-term recurrence rates.

Researchers are evaluating the effectiveness of radiation therapy with or without the chemotherapy drug cisplatin in patients with stage III-IVA squamous cell carcinoma of the head and neck who have had surgery to remove their tumors. This phase II trial aims to understand if adding cisplatin to radiation therapy improves disease-free survival, especially considering the role of p53 mutations in the cancer cells. The study also investigates toxicities and potential genomic factors that might influence treatment outcomes. Patients are randomly assigned to one of two treatment groups. One group receives intensity-modulated radiation therapy (IMRT) alone once daily, five days a week for six weeks. The other group receives the same radiation treatment combined with weekly intravenous cisplatin over one to two hours, also for six weeks. Treatment continues as long as there is no disease progression or unacceptable side effects. During the study, participants undergo regular follow-ups every six months for three years and then yearly for seven more years to monitor for cancer recurrence or new tumors. Researchers assess disease-free survival, tracking the time from randomization until cancer returns, a second tumor develops, or death. Additional laboratory tests and biomarker analyses are performed to understand genetic changes and treatment effects. Safety and toxicities are closely monitored throughout the study period.

PRIMARY OBJECTIVE: I. To determine if the time to local failure is improved with FSRS compared to SRS in patients with intact (i.e., unresected) brain metastases. SECONDARY OBJECTIVES: I. To compare time to intracranial progression-free survival between FSRS and SRS. II. To compare overall survival between FSRS and SRS. III. To determine if the time to local failure is improved with FSRS compared to SRS, as evaluated by central review of imaging. IV. To evaluate if there is any difference in central nervous system (CNS) failure patterns (local versus \[vs.\] distant brain failure vs. both) in patients who receive FSRS compared to patients who receive SRS. V. To compare the rates of radiation necrosis in patients who receive FSRS vs. SRS. VI. To compare the time to salvage whole brain radiation therapy (WBRT) between patients who receive FSRS and those who receive SRS. VII. To compare the rates of post-treatment adverse events associated with FSRS and SRS. OUTLINE: Patients are randomized to 1 of 2 arms. ARM I: Patients undergo SRS over 30-90 minutes for 1 fraction on study. Additionally, patients undergo computed tomography (CT) and magnetic resonance imaging (MRI) on study. ARM II: Patients undergo FSRS over 30-90 minutes for 3 fractions on study. Additionally, patients undergo CT and MRI on study. After completion of study treatment, patients are followed up every 3 months for 1 year, every 4 months for 1 year then every 6 months for 3 years.