Идёт набор NCT06436612

Study of Magnetic Resonance Image and Computed Tomography-Guided Stereotactic Body Radiation Therapy for Abdominopelvic Sarcomas (MARS Trial)

Фаза II С лечением Abdominopelvic Sarcomas

Ориентир для пациента и семьи

Простыми словами

Автоматическая сводка по структурированным данным реестра. Она помогает сориентироваться, но не заменяет официальный протокол или оценку врача.

Что изучают: В протоколе указаны: Magnetic Resonance Image and Computed Tomography-Guided Stereotactic Body Radiation Therapy.
Кому может быть актуально: Состояния в реестре: Abdominopelvic Sarcomas. Базовые параметры: от 12 лет · Все.
Что важно проверить: Возраст, диагноз и пол — только базовые ориентиры. Предыдущее лечение, анализы и другие обязательные условия указаны ниже в критериях участия.
Где проводится: США
Следующий шаг: Сохраните исследование, покажите его лечащему врачу и уточните актуальный статус у исследовательского центра. Расходы, документы и поездка →

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Официальное название

Phase II Study of Magnetic Resonance Image and Computed Tomography-Guided Stereotactic Body Radiation Therapy for Abdominopelvic Sarcomas (MARS Trial)

Обзор

Recent advances in radiation treatment have allowed for higher doses per treatment to be delivered safely. This study plans to use an MRI-guided linear accelerator to deliver the radiation treatment to ensure that the radiation dose is administered to the cancerous tumor, not the vital body organs. Potential participants with a sarcoma diagnosis will be referred to Radiation Oncology during this study. If the participant is interested in participating in this study, s/he receives radiation treatment daily for 5 consecutive days except for weekends and holidays. Within 12 weeks of completing the radiation therapy, the participant will have the primary tumor surgically removed. The radiation oncology team will follow the patients for 5 years after completing radiation therapy.

Подробное описание

Each patient will undergo radiation simulation and planning. A custom vac-lok bag, alpha cradle, or equivalent immobilization device will be used. Both CT and MRI simulation will be obtained, which is standard of care for any patient undergoing radiation therapy for soft tissue sarcomas.

The study investigator will be responsible for delineating the gross tumor volume (GTV) using the CT as well as MRI performed as part of staging. Guidelines for contouring will be as per the currently open NRG trial for sarcomas. In general, this may entail expansions by 5-15 mm isotropically, should include any suspicious areas be identified on T2 weighted MRI, and should be cropped to natural anatomic borders. This clinical target volume (CTV) will then be expanded to a planning treatment volume (PTV) using a 3-5 mm expansion.

A prescription dose of 5-6 Gy x 5 fractions (25-30 Gy) will be delivered to at least 95% of the PTV. Stereotactic body radiotherapy (SBRT) and/or intensity modulated radiotherapy (IMRT) planning techniques may be used to minimize radiation dose to nearby organs at risk (OAR) but is not required.

Delineation of normal structures will be performed and verified by the responsible study investigator. The radiation physicist or dosimetrist will optimize the treatment plan prior to approval for treatment. Dose volume histograms (DVH) and normal tissue constraint parameters specified below will be used to judge the plan quality and optimize PTV coverage with OAR sparing prior to approval.

Radiation will be delivered daily for 5 consecutive days with the exception of weekends and holidays. In instances where the radiation treatment week contains a holiday or scheduling availability is limited, two fractions of radiation may be given on the same day providing that the fractions are administered ≥ 6 hours apart (this is considered standard of care treatment).

Surgical resection of at least the primary tumor will follow within 12 weeks of completing radiation therapy. Surgical specimens will be sent to pathology for evaluation and for review by a multidisciplinary tumor board.

Вмешательства

Лучевая терапия Magnetic Resonance Image and Computed Tomography-Guided Stereotactic Body Radiation Therapy
stereotactic body radiation therapy (SBRT) administered over 5 days x 5.0 - 6.0 Gy for patients with abdominopelvic sarcomas.

Первичные конечные точки

Radiation morbidity at 2 years [Срок оценки: At 2 years]

Вторичные конечные точки (5)

Local Control [Срок оценки: At 2 years]
Regional Control [Срок оценки: At 2 years]
Distant metastasis [Срок оценки: At 2 years]
Progression free survival [Срок оценки: At 2 years]
Overall survival [Срок оценки: At 2 years]

Критерии участия

Критерии включения

Histologically confirmed sarcoma
Primary or recurrent disease involving the abdomen or pelvis
Resectable primary lesion
Age ≥ 12 years old
Karnofsky performance status (KPS) ≥ 70 or Eastern Cooperative Oncology Group (ECOG) 0-2
If a woman is of childbearing potential, a negative serum or urine pregnancy test must be documented