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Two Fraction SBRT with Dominant Lesion SIB for the Treatment of Localized Prostate Cancer

Trial Status: active

This phase I trial tests the safety, side effects, and best dose of stereotactic body radiation therapy (SBRT) with a simultaneous integrated boost (SIB) to the dominant lesion in treating patients with prostate cancer that has not spread to other parts of the body (localized). Radiation works by damaging the tumor cells in the body and stopping them from growing or spreading. In this trial SBRT involves the delivery of up to 5 high dose radiation treatments, known as fractions. It is a precise form of treatment, which targets small tumors without damaging nearby healthy organs or tissue. SIB allows the simultaneous delivery of different dose levels to a specific site of the tumor. By using the SIB strategy, the dose would be escalated only to the target lesion rather than the entire prostate gland, thereby potentially achieving improvements in controlling the disease while mitigating unwanted treatment-related toxicity. This trial is evaluating the use of 2 fractions administered at a higher radiation dose in combination with SIB to the dominant lesion. If it can be proven that 2 fractions of SBRT with SIB is safer than 5 fractions, this method of treatment may be provided as a standard of care for prostate cancer treatment. This might prove to be an effective treatment option that improves clinical outcomes, limits the amount of side effects patients may experience, and lower the amount of overall provider visits a patient will need to schedule.